H.323 Signaling

This section describes some basic call flows for the Cisco ATA:

•Supported H.323 Messages

•H.323 Signaling Scenarios

Note The term Cisco ATA is used throughout this manual to refer to both the Cisco ATA 186 and the Cisco ATA 188, unless differences between the Cisco ATA 186 and Cisco ATA 188 are explicitly stated.

Supported H.323 Messages

The Cisco ATA supports the following H.323 request methods:

•Request—When registering with an H.323 gatekeeper or Gateway, an individual H.323 endpoint must begin the process by sending a request message.

•Confirm—H.323 gatekeepers and Gateways authorize individual H.323 endpoints to access and send data over the H.323 network with explicit confirmation messages.

•Reject—In the event that an H.323 gatekeeper or Gateway in unable to grant access permission to an H.323 endpoint, a rejection message is sent and call setup is halted.

•Setup—Once access to the H.323 network has been granted, H.323 components contact remote H.323 components via setup messages, initiating two-way voice, video, or data communication.

•Proceeding—When a remote H.323 component acknowledges receipt of call initiation information and agrees to perform necessary subsequent setup for two-way voice, video, or data communication, it responds with a proceeding message.

•Alerting—When a remote H.323 endpoint has begun to notify the called party of an incoming call (the phone begins to ring at the far end), an alerting message is sent back to the calling party.

•Connect—When the called party answers the call (the phone goes off hook), the remote H.323 endpoint transmits a connecting message notifying the calling party that two-way communication is ready to commence.

H.323 Signaling Scenarios

This section describes call flows for the following scenarios:

•H.323 Endpoint-to-Gatekeeper Registration

•H.323 Endpoint-to-Endpoint Call Setup with a Common Gatekeeper

•H.323 Call Setup from H.323 Network to Circuit Switched Network

Each of the call flows includes a call diagram, action descriptions table, and a sample log file.

H.323 Endpoint-to-Gatekeeper Registration

Figure D-1 illustrates the Cisco ATA registering with an H.323 gatekeeper. This scenario features registration with no authentication.

Figure D-1 Cisco ATA-to-H.323 Gatekeeper Registration

Table D-1 Action Descriptions

Step
Action
Description

1.

Gatekeeper Request (GRQ)—Cisco ATA to H.323 gatekeeper

Cisco ATA sends a GRQ message to the H.323 gatekeeper to see if any gatekeepers are available for registration.

2.

Gatekeeper Confirmation (GCF) or gatekeeper Rejection (GRJ)—H.323 gatekeeper to Cisco ATA

H.323 gatekeeper returns a GCF or GRJ message, indicating whether or not the responding gatekeeper is able to register new Cisco ATA devices.

3.

Registration Request (RRQ)—Cisco ATA to H.323 gatekeeper

Cisco ATA sends a RRQ message to the H.323 gatekeeper in an attempt to register as part of that gatekeeper's zone.

4.

Registration Confirmation (RCF) or Registration Rejection (RRJ)—H.323 gatekeeper to Cisco ATA

H.323 gatekeeper returns a RCF or RRJ message, indicating whether or not the gatekeeper will add the Cisco ATA to its zone.

Table D-2 Log Listings 

1. 

value RasMessage ::= gatekeeperRequest :

3w2d:  {

3w2d:    requestSeqNum 037472,

3w2d:    protocolIdentifier { 0 0 8 2250 0 2 },

3w2d:    rasAddress ipAddress :

3w2d:      {

3w2d:        ip 'C0A80267'H,

3w2d:        port 02712

3w2d:      },

3w2d:    endpointType

3w2d:    {

3w2d:      gateway

3w2d:      {

3w2d:        protocol

3w2d:        {

3w2d:          voice :

3w2d:            {

3w2d:              supportedPrefixes

3w2d:              {

3w2d:              }

3w2d:            }

3w2d:        }

3w2d:      },

3w2d:      mc FALSE,

3w2d:      undefinedNode FALSE

3w2d:    },

3w2d:    gatekeeperIdentifier "c2600gk.komodo-tech.com",

3w2d:    endpointAlias

3w2d:    {

3w2d:      h323-ID :"c2600gw",

3w2d:      e164 :"14085551102",

3w2d:      e164 :"14088713483",

3w2d:      e164 :"14088713484",

3w2d:      e164 :"5551111",

3w2d:      e164 :"7771111",

3w2d:      e164 :"8881111"

3w2d:    }

3w2d:  }

2. 

3w2d:value RasMessage ::= gatekeeperConfirm :

3w2d:  {

3w2d:    requestSeqNum 037472,

3w2d:    protocolIdentifier { 0 0 8 2250 0 2 },

3w2d:    gatekeeperIdentifier "c2600gk.komodo-tech.com",

3w2d:    rasAddress ipAddress :

3w2d:      {

3w2d:        ip 'C0A80268'H,

3w2d:        port 01719

3w2d:      }

3w2d:  }

3. 

value RasMessage ::= registrationRequest :

3w2d:  {

3w2d:    requestSeqNum 02,

3w2d:    protocolIdentifier { 0 0 8 2250 0 2 },

3w2d:    discoveryComplete TRUE,

3w2d:    callSignalAddress

3w2d:    {

3w2d:      ipAddress :

3w2d:        {

3w2d:          ip 'C0A80260'H,

3w2d:          port 01720

3w2d:        }

3w2d:    },

3w2d:    rasAddress

3w2d:    {

3w2d:      ipAddress :

3w2d:        {

3w2d:          ip 'C0A80260'H,

3w2d:          port 01719

3w2d:        }

3w2d:    },

3w2d:    terminalType

3w2d:    {

3w2d:      vendor

3w2d:      {

3w2d:        vendor

3w2d:        {

3w2d:          t35CountryCode 05,

3w2d:          t35Extension 00,

3w2d:          manufacturerCode 020001

3w2d:        },

3w2d:        productId '4B6F6D6F646F204520466F6E65'H,

3w2d:        versionId '56657273696F6E20312E3130'H

3w2d:      },

3w2d:      terminal

3w2d:      {

3w2d:      },

3w2d:      mc FALSE,

3w2d:      undefinedNode FALSE

3w2d:    },

3w2d:    terminalAlias

3w2d:    {

3w2d:      h323-ID :"196"

3w2d:    },

3w2d:    endpointVendor

3w2d:    {

3w2d:      vendor

3w2d:      {

3w2d:        t35CountryCode 05,

3w2d:        t35Extension 00,

3w2d:        manufacturerCode 020001

3w2d:      },

3w2d:      productId '4B6F6D6F646F204520466F6E65'H,

3w2d:      versionId '56657273696F6E20312E3130'H

3w2d:    },

3w2d:    keepAlive FALSE,

3w2d:    willSupplyUUIEs FALSE

3w2d:  }

4. 

3w2d:value RasMessage ::= registrationConfirm :

3w2d:  {

3w2d:    requestSeqNum 02,

3w2d:    protocolIdentifier { 0 0 8 2250 0 2 },

3w2d:    callSignalAddress

3w2d:    {

3w2d:    },

3w2d:    terminalAlias

3w2d:    {

3w2d:      h323-ID :"196"

3w2d:    },

3w2d:    gatekeeperIdentifier "c2600gk.komodo-tech.com",

3w2d:    endpointIdentifier "80F5235000009E12",

3w2d:    timeToLive 03548,

3w2d:    willRespondToIRR FALSE

3w2d:  }

H.323 Endpoint-to-Endpoint Call Setup with a Common Gatekeeper

Figure D-2 illustrates a Cisco ATA initiating a connection to another Cisco ATA that is registered with the same H.323 gatekeeper. This scenario features registration with no authentication.

Note This scenario assumes that the H.323 configuration employs Slow Start Signaling with tunneling capability.

Figure D-2 H.323 Endpoint-to-Endpoint Call Setup with a Common Gatekeeper

Table D-3 Action Descriptions 

Step
Action
Description

1.

Local Admission Request (ARQ)—Local H.323 endpoint to H.323 gatekeeper

Cisco ATA sends a local ARQ message to the H.323 gatekeeper seeking authorization to place a call over the H.323 network.

2.

Local Admission Confirm (ACF) or Admission Reject (ARJ)—H.323 gatekeeper to the local H.323 endpoint

H.323 gatekeeper returns a ACF or ARJ message, indicating whether or not the responding gatekeeper is going to allow the Cisco ATA device access to the network.

3.

Open TCP Channel for Q.931 messaging

TCP port 1720 is opened, making way for the forward and reverse flow of Q.931 signaling messages between the H.323 endpoints.

4.

Q.931 Call Setup—Local H.323 endpoint to remote H.323 endpoint

Call setup initiates from the local H.323 endpoint.

5.

Q.931 Call Proceeding—Remote H.323 endpoint to local H.323 endpoint

Remote H.323 endpoint acknowledges call setup initiation.

6.

Remote Admission Request (ARQ)—Remote Cisco ATA to H.323 gatekeeper

(Somewhat simultaneous, chronologically, to call setup and call proceeding) remote H.323 endpoint contacts the common H.323 gatekeeper, seeking authorization to complete the two-way H.323 network call.

7.

Remote Admission Confirm (ACF) or Admission Reject (ARJ)—H.323 gatekeeper to the remote Cisco ATA

H.323 gatekeeper returns a ACF or ARJ message, indicating whether or not the responding gatekeeper is going to allow the Cisco ATA device access to the network.

8.

Q.931 Alerting—Remote H.323 endpoint to local H.323 endpoint

Status message is sent to calling H.323 endpoint advising that the called party has been notified (phone ringing).

9.

Q.931 Connect—Remote H.323 endpoint to local H.323 endpoint

Status message is sent to calling H.323 endpoint advising that the called party has answered the call (phone off hook).

10.

Open TCP Channel for H.245

Dynamically assigned TCP port is opened on both the local and remote H.323 endpoints, allowing for subsequent call setup activities (transmission and reception capability exchange, master-slave relationship determination, and so on).

11.

H.245 Terminal Capabilities

Various endpoint transmission and reception capabilities defining operation of voice, video, and data are exchanged and acknowledged to ensure consistent, reliable two-way communication between endpoints.

12.

H.245 Terminal Capabilities

13.

H.245 Terminal Capabilities

14.

H.245 Terminal Capabilities

15.

Exchange of Master-Slave Determination Messages—Remote H.323 endpoint to local H.323 endpoint

Determines master and slave assignments between H.323 endpoints.

16.

H.245 Open Audio Logical Channel—Local H.323 endpoint to remote H.323 endpoint

Before actual transmission or reception of voice, video, or data, notification that the primary logical channel for the local H.323 endpoint has been opened, ensuring clear two-way communication.

17.

H.245 Open Audio Logical Channel Acknowledgement—Remote H.323 endpoint to local H.323 endpoint

Remote H.323 endpoint acknowledges readiness.

18.

H.245 Open Audio Logical Channel—Remote H.323 endpoint to local H.323 endpoint

Before actual transmission or reception of voice, video, or data, notification that the primary logical channel for the remote H.323 endpoint has been opened, ensuring clear two-way communication.

19.

H.245 Open Audio Logical Channel Acknowledgement—Local H.323 endpoint to remote H.323 endpoint

Local H.323 endpoint acknowledges readiness.

20.

Bi-Directional Audio with Transcoding in the Endpoints

Two-way communication ensues between endpoints over the H.323 network.


Table D-4 Log Listings 

1. 

value RasMessage ::= registrationRequest :

    {

      requestSeqNum 61357

      protocolIdentifier { 0 0 8 2250 0 2 }

      discoveryComplete FALSE

      callSignalAddress 

      {

      }

      rasAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 49450

        }

      }

      terminalType 

      {

        mc FALSE

        undefinedNode FALSE

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointVendor 

      {

        vendor 

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

      }

      timeToLive 60

      keepAlive TRUE

      endpointIdentifier {"814EE09C0000001A"}

      willSupplyUUIEs FALSE

    }

2. 

value RasMessage ::= registrationConfirm :

    {

      requestSeqNum 61357

      protocolIdentifier { 0 0 8 2250 0 2 }

      callSignalAddress 

      {

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointIdentifier {"814EE09C0000001A"}

      alternateGatekeeper 

      {

      }

      timeToLive 60

      willRespondToIRR FALSE

    }

3. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body setup :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          sourceAddress 

          {

            h323-ID :{"Firstname Lastname"}

          }

          sourceInfo 

          {

            vendor 

            {

              vendor 

              {

                t35CountryCode 181

                t35Extension 0

                manufacturerCode 21324

              }

              productId '4D6963726F736F6674AE204E65744D656574696E...'H

              versionId '332E3000'H

            }

            terminal 

            {

            }

            mc FALSE

            undefinedNode FALSE

          }

          destinationAddress 

          {

            e164 :"6661111"

          }

          activeMC FALSE

          conferenceID '2E9B85298E88D611AD4600A0CC5C89F1'H

          conferenceGoal create :NULL

          callType pointToPoint :NULL

          sourceCallSignalAddress ipAddress :

          {

            ip 'C0A80209'H

            port 4568

          }

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

          mediaWaitForConnect FALSE

          canOverlapSend FALSE

        }

        nonStandardData 

        {

          nonStandardIdentifier h221NonStandard :

          {

            t35CountryCode 181

            t35Extension 0

            manufacturerCode 21324

          }

          data '0200000028000000000000001B00000081384274...'H

        }

      }

    }

4. 

value ARQnonStandardInfo ::= 

    {

      sourceAlias 

      {

      }

      sourceExtAlias 

      {

      }

      displayInformationElement "Firstname Lastname"

      interfaceSpecificBillingId "FXS 1/1/0"

    }

5. 

value RasMessage ::= admissionRequest :

    {

      requestSeqNum 61358

      callType pointToPoint :NULL

      callModel direct :NULL

      endpointIdentifier {"814EE09C0000001A"}

      destinationInfo 

      {

        e164 :"6661111"

      }

      srcInfo 

      {

        h323-ID :{"Firstname Lastname"}

      }

      srcCallSignalAddress ipAddress :

      {

        ip 'C0A80209'H

        port 4568

      }

      bandWidth 640

      callReferenceValue 215

      nonStandardData 

      {

        nonStandardIdentifier h221NonStandard :

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

        data '8000000860132246697273746E616D65204C6173...'H

      }

      conferenceID '2E9B85298E88D611AD4600A0CC5C89F1'H

      activeMC FALSE

      answerCall TRUE

      canMapAlias TRUE

      callIdentifier 

      {

        guid '2D9B85298E88D611AD4600A0CC5C89F1'H

      }

      willSupplyUUIEs FALSE

    }

6. 

value RasMessage ::= admissionConfirm :

    {

      requestSeqNum 61358

      bandWidth 1

      callModel direct :NULL

      destCallSignalAddress ipAddress :

      {

        ip 'C0A80363'H

        port 1720

      }

      irrFrequency 240

      willRespondToIRR FALSE

      uuiesRequested 

      {

        setup FALSE

        callProceeding FALSE

        connect FALSE

        alerting FALSE

        information FALSE

        releaseComplete FALSE

        facility FALSE

        progress FALSE

        empty FALSE

      }

    }

7. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body callProceeding :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          destinationInfo 

          {

            mc FALSE

            undefinedNode FALSE

          }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11201

          }

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

      }

    }

8. 

value H323_UU_NonStdInfo ::= 

    {

      version 16

      protoParam qsigNonStdInfo :

      {

        iei 30

        rawMesg '1E028188'H

      }

    }

9. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body progress :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          destinationInfo 

          {

            mc FALSE

            undefinedNode FALSE

          }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11201

          }

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

        nonStandardControl 

        {


          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data '60011000011E041E028188'H

          }

        }

      }

    }

10. 

value H323_UU_NonStdInfo ::= 

    {

      version 0

      progIndParam progIndIEinfo :

      {

        progIndIE '00000002'H

      }

    }

11. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body connect :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11201

          }

          destinationInfo 

          {

            gateway 

            {

              protocol 

              {

                voice :

                {

                  supportedPrefixes 

                  {


                    {

                      prefix e164 :"1#"

                    }

                  }

                }

              }

            }

            mc FALSE

            undefinedNode FALSE

          }

          conferenceID '2E9B85298E88D611AD4600A0CC5C89F1'H

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

        nonStandardControl 

        {


          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data 'C00100028006000400000002'H

          }

        }

      }

    }

12. 

value IRRperCallnonStandardInfo ::= 

    {

      startTime 1024959117

    }

13. 

value RasMessage ::= infoRequestResponse :

    {

      requestSeqNum 61359

      endpointType 

      {

        gateway 

        {

          protocol 

          {

            voice :

            {

              supportedPrefixes 

              {


                {

                  prefix e164 :"1#"

                }

              }

            }

          }

        }

        mc FALSE

        undefinedNode FALSE

      }

      endpointIdentifier {"814EE09C0000001A"}

      rasAddress ipAddress :

      {

        ip 'C0A80363'H

        port 49450

      }

      callSignalAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 1720

        }

      }

      endpointAlias 

      {

        e164 :"6661111",

        e164 :"6663333",

        h323-ID :{"zonetwo"}

      }

      perCallInfo 

      {


        {

          nonStandardData 

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data '703D17A28D'H

          }

          callReferenceValue 215

          conferenceID '2E9B85298E88D611AD4600A0CC5C89F1'H

          h245 

          {

          }

          callSignaling 

          {

          }

          callType pointToPoint :NULL

          bandWidth 1

          callModel direct :NULL

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

        }

      }

needResponse FALSE

    }

14. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body releaseComplete :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          reason undefinedReason :NULL

          callIdentifier 

          {

            guid '2D9B85298E88D611AD4600A0CC5C89F1'H

          }

        }

      }

    }

15. 

value RasMessage ::= disengageRequest :

    {

      requestSeqNum 61360

      endpointIdentifier {"814EE09C0000001A"}

      conferenceID '2E9B85298E88D611AD4600A0CC5C89F1'H

      callReferenceValue 215

      disengageReason normalDrop :NULL

      callIdentifier 

      {

        guid '2D9B85298E88D611AD4600A0CC5C89F1'H

      }

      answeredCall TRUE

    }

16. 

value RasMessage ::= disengageConfirm :

    {

      requestSeqNum 61360

    }

17. 

value RasMessage ::= registrationRequest :

    {

      requestSeqNum 61361

      protocolIdentifier { 0 0 8 2250 0 2 }

      discoveryComplete FALSE

      callSignalAddress 

      {

      }

      rasAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 49450

        }

      }

      terminalType 

      {

        mc FALSE

        undefinedNode FALSE

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointVendor 

      {

        vendor 

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

      }

      timeToLive 60

      keepAlive TRUE

      endpointIdentifier {"814EE09C0000001A"}

      willSupplyUUIEs FALSE

    }

18. 

value RasMessage ::= registrationConfirm :

    {

      requestSeqNum 61361

      protocolIdentifier { 0 0 8 2250 0 2 }

      callSignalAddress 

      {

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointIdentifier {"814EE09C0000001A"}

      alternateGatekeeper 

      {

      }

      timeToLive 60

      willRespondToIRR FALSE

    }

H.323 Call Setup from H.323 Network to Circuit Switched Network

Figure D-3 illustrates a Cisco ATA initiating a connection to a Circuit Switched Network (CSN) or Public Switched Telephone Network (PSTN) Gateway router through its local H.323 gatekeeper.

Note This scenario assumes that the H.323 configuration employs Fast Start Signaling with tunneling capability.

Figure D-3 H.323 Call Setup from H.323 Network to Circuit Switched Network

Table D-5 Action Descriptions 

Step
Action
Description

1.

Local Admission Request (ARQ)—Local endpoint to H.323 gatekeeper

Cisco ATA sends a local ARQ message to the H.323 gatekeeper seeking authorization to place a call over the H.323 network.

2.

Local Admission Confirm (ACF) or Admission Reject (ARJ)—H.323 gatekeeper to the local endpoint

H.323 gatekeeper returns a ACF or ARJ message, indicating whether or not the responding gatekeeper is going to allow the Cisco ATA device access to the network.

3.

Open TCP Channel for Q.931 messaging

TCP port 1720 is opened, making way for the forward and reverse flow of Q.931 signaling messages between the H.323 endpoint and the CSN/PSTN Gateway.

4.

Q.931 Call Setup—Local H.323 endpoint to remote H.323 endpoint

Call setup initiates from the local H.323 endpoint.

5.

Q.931 Call Proceeding—Remote H.323 endpoint to local H.323 endpoint

Gateway acknowledges call setup initiation.

6.

Gateway Admission Request (ARQ)—SCN/PSTN Gateway to H.323 gatekeeper

(Somewhat simultaneous, chronologically, to call setup and call proceeding) Gateway contacts the common H.323 gatekeeper, seeking authorization to complete the two-way H.323 network-to-CSN/PSTN Gateway call.

7.

Gateway Admission Confirm (ACF) or Admission Reject (ARJ)—H.323 gatekeeper to CSN/PSTN Gateway

H.323 gatekeeper returns a ACF or ARJ message, indicating whether or not the responding gatekeeper is going to allow the Gateway access to the network.

8.

Q.931 Alerting—Gateway endpoint to local H.323 endpoint

Status message is sent to calling H.323 endpoint advising that the called party has been notified (phone ringing).

9.

Q.931 Connect—Gateway to local H.323 endpoint

Status message is sent to calling H.323 endpoint advising that the called party has answered the call (phone off hook).

10.

Open TCP Channel for H.245

Dynamically assigned TCP port is opened on both the local H.323 endpoint and the Gateway, allowing for subsequent call setup activities (transmission and reception capability exchange, master-slave relationship determination, and so on).

11.

H.245 Terminal Capabilities

Various endpoint transmission and reception capabilities defining operation of voice, video, and data are exchanged and acknowledged to ensure consistent, reliable two-way communication between the H.323 endpoint and the Gateway.

12.

H.245 Terminal Capabilities

13.

H.245 Terminal Capabilities

14.

H.245 Terminal Capabilities

15.

Exchange of Master-Slave Determination Messages—Remote H.323 endpoint to local H.323 endpoint

Determines master and slave assignments between the H.323 endpoint and the Gateway.

16.

H.245 Open Audio Logical Channel—Local H.323 endpoint to remote H.323 endpoint

Before actual transmission or reception of voice, video, or data, notification that the primary logical channel for the local H.323 endpoint has been opened, ensuring clear two-way communication.

17.

H.245 Open Audio Logical Channel Acknowledgement—Remote H.323 endpoint to local H.323 endpoint

Gateway acknowledges readiness.

18.

H.245 Open Audio Logical Channel—Remote H.323 endpoint to local H.323 endpoint

Before actual transmission or reception of voice, video, or data, notification that the primary logical channel for the Gateway has been opened, ensuring clear two-way communication.

19.

H.245 Open Audio Logical Channel Acknowledgement—Local H.323 endpoint to remote H.323 endpoint

Local H.323 endpoint acknowledges readiness.

20.

Bi-Directional Audio with Transcoding Between Endpoint and Gateway

Two-way communication ensues between the local H.323 endpoint and the CSN/PSTN Gateway.


Table D-6 Log Listings 

1. 

value RasMessage ::= registrationRequest :

    {

      requestSeqNum 28034

      protocolIdentifier { 0 0 8 2250 0 2 }

      discoveryComplete FALSE

      callSignalAddress 

      {

      }

      rasAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 49450

        }

      }

      terminalType 

      {

        mc FALSE

        undefinedNode FALSE

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointVendor 

      {

        vendor 

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

      }

      timeToLive 60

      keepAlive TRUE

      endpointIdentifier {"814EE09C0000001A"}

      willSupplyUUIEs FALSE

    }

2. 

value RasMessage ::= registrationConfirm :

    {

      requestSeqNum 28034

      protocolIdentifier { 0 0 8 2250 0 2 }

      callSignalAddress 

      {

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointIdentifier {"814EE09C0000001A"}

      alternateGatekeeper 

      {

      }

      timeToLive 60

      willRespondToIRR FALSE

    }

3. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body setup :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          sourceAddress 

          {

            h323-ID :{"Firstname Lastname"}

          }

          sourceInfo 

          {

            vendor 

            {

              vendor 

              {

                t35CountryCode 181

                t35Extension 0

                manufacturerCode 21324

              }

              productId '4D6963726F736F6674AE204E65744D656574696E...'H

              versionId '332E3000'H

            }

            terminal 

            {

            }

            mc FALSE

            undefinedNode FALSE

          }

          destinationAddress 

          {

            e164 :"914089023833"

          }

          activeMC FALSE

          conferenceID '0C01EF01BD95D611AD4600A0CC5C89F1'H

          conferenceGoal create :NULL

          callType pointToPoint :NULL

          sourceCallSignalAddress ipAddress :

          {

            ip 'C0A80209'H

            port 4595

          }

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

          mediaWaitForConnect FALSE

          canOverlapSend FALSE

        }

        nonStandardData 

        {

          nonStandardIdentifier h221NonStandard :

          {

            t35CountryCode 181

            t35Extension 0

            manufacturerCode 21324

          }

          data '0200000028000000000000001B00000081384274...'H

        }

      }

    }

4. 

value ARQnonStandardInfo ::= 

    {

      sourceAlias 

      {

      }

      sourceExtAlias 

      {

      }

      displayInformationElement "Firstname Lastname"

      interfaceSpecificBillingId "FXS 1/1/1"

    }

5. 

value RasMessage ::= admissionRequest :

    {

      requestSeqNum 28037

      callType pointToPoint :NULL

      callModel direct :NULL

      endpointIdentifier {"814EE09C0000001A"}

      destinationInfo 

      {

        e164 :"914089023833"

      }

      srcInfo 

      {

        h323-ID :{"Firstname Lastname"}

      }

      srcCallSignalAddress ipAddress :

      {

        ip 'C0A80209'H

        port 4595

      }

      bandWidth 640

      callReferenceValue 235

      nonStandardData 

      {

        nonStandardIdentifier h221NonStandard :

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

        data '8000000860132246697273746E616D65204C6173...'H

      }

      conferenceID '0C01EF01BD95D611AD4600A0CC5C89F1'H

      activeMC FALSE

      answerCall TRUE

      canMapAlias TRUE

      callIdentifier 

      {

        guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

      }

      willSupplyUUIEs FALSE

    }

6. 

value RasMessage ::= admissionConfirm :

    {

      requestSeqNum 28037

      bandWidth 1

      callModel direct :NULL

      destCallSignalAddress ipAddress :

      {

        ip 'C0A80363'H

        port 1720

      }

      irrFrequency 240

      willRespondToIRR FALSE

      uuiesRequested 

      {

        setup FALSE

        callProceeding FALSE

        connect FALSE

        alerting FALSE

        information FALSE

        releaseComplete FALSE

        facility FALSE

        progress FALSE

        empty FALSE

      }

    }

7. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body callProceeding :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          destinationInfo 

          {

            mc FALSE

            undefinedNode FALSE

          }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11218

          }

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

      }

    }

8. 

value H323_UU_NonStdInfo ::= 

    {

      version 16

      protoParam qsigNonStdInfo :

      {

        iei 30

        rawMesg '1E028188'H

      }

    }

9. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body progress :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          destinationInfo 

          {

            mc FALSE

            undefinedNode FALSE

          }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11218

          }

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

        nonStandardControl 

        {


          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data '60011000011E041E028188'H

          }

        }

      }

    }

10. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body connect :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          h245Address ipAddress :

          {

            ip 'C0A80363'H

            port 11218

          }

          destinationInfo 

          {

            gateway 

            {

              protocol 

              {

                voice :

                {

                  supportedPrefixes 

                  {


                    {

                      prefix e164 :"1#"

                    }

                  }

                }

              }

            }

            mc FALSE

            undefinedNode FALSE

          }

          conferenceID '0C01EF01BD95D611AD4600A0CC5C89F1'H

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

        }

        h245Tunneling FALSE

        nonStandardControl 

        {


          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data 'C00100028006000400000002'H

          }

        }

      }

    }

11. 

value RasMessage ::= infoRequestResponse :

    {

      requestSeqNum 28038

      endpointType 

      {

        gateway 

        {

          protocol 

          {

            voice :

            {

              supportedPrefixes 

              {


                {

                  prefix e164 :"1#"

                }

              }

            }

          }

        }

        mc FALSE

        undefinedNode FALSE

      }

      endpointIdentifier {"814EE09C0000001A"}

      rasAddress ipAddress :

      {

        ip 'C0A80363'H

        port 49450

      }

      callSignalAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 1720

        }

      }

      endpointAlias 

      {

        e164 :"6661111",

        e164 :"6663333",

        h323-ID :{"zonetwo"}

      }

      perCallInfo 

      {


        {

          nonStandardData 

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 18

            }

            data '703D2DC1A0'H

          }

          callReferenceValue 235

          conferenceID '0C01EF01BD95D611AD4600A0CC5C89F1'H

          h245 

          {

          }

          callSignaling 

          {

          }

          callType pointToPoint :NULL

          bandWidth 1

          callModel direct :NULL

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

        }

      }

      needResponse FALSE

    }

12. 

value H323_UU_NonStdInfo ::= 

    {

      version 0

      progIndParam progIndIEinfo :

      {

        progIndIE '00000002'H

      }

    }

13. 

value IRRperCallnonStandardInfo ::= 

    {

      startTime 1026408864

    }

14. 

value MultimediaSystemControlMessage ::= request :terminalCapabilitySet :

    {

      sequenceNumber 1

      protocolIdentifier { 0 0 8 245 0 3 }

      multiplexCapability h2250Capability :

      {

        maximumAudioDelayJitter 20

        receiveMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        transmitMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        receiveAndTransmitMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        mcCapability 

        {

          centralizedConferenceMC FALSE

          decentralizedConferenceMC FALSE

        }

        rtcpVideoControlCapability FALSE

        mediaPacketizationCapability 

        {

          h261aVideoPacketization FALSE

        }

        logicalChannelSwitchingCapability FALSE

        t120DynamicPortCapability FALSE

      }

      capabilityTable 

      {
  
 {

          capabilityTableEntryNumber 17

          capability receiveAndTransmitDataApplicationCapability :

          {

            application nonStandard :

            {

              nonStandardIdentifier h221NonStandard :

              {

                t35CountryCode 181

                t35Extension 0

                manufacturerCode 18

              }

              data '52747044746D6652656C6179'H

            }

            maxBitRate 0

          }

        },

        {

          capabilityTableEntryNumber 23

          capability receiveUserInputCapability :hookflash :NULL

        },

        {

          capabilityTableEntryNumber 22

          capability receiveUserInputCapability :dtmf :NULL

        },

        {

          capabilityTableEntryNumber 19

          capability receiveUserInputCapability :basicString :NULL

        },

        {

          capabilityTableEntryNumber 2

          capability receiveAudioCapability :g711Alaw64k :20

        }

      }

      capabilityDescriptors 

      {


        {

          capabilityDescriptorNumber 1

          simultaneousCapabilities 

          {


            {

              23

            },


            {

              22,

              19,

              17

            },


            {

              2

            }

          }

        }

      }

    }

15. 

value MultimediaSystemControlMessage ::= request :masterSlaveDetermination :

    {

      terminalType 60

      statusDeterminationNumber 5917

    }

16. 

value MultimediaSystemControlMessage ::= request :terminalCapabilitySet :

    {

      sequenceNumber 1

      protocolIdentifier { 0 0 8 245 0 3 }

      multiplexCapability h2250Capability :

      {

        maximumAudioDelayJitter 60

        receiveMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        transmitMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        receiveAndTransmitMultipointCapability 

        {

          multicastCapability FALSE

          multiUniCastConference FALSE

          mediaDistributionCapability 

          {


            {

              centralizedControl FALSE

              distributedControl FALSE

              centralizedAudio FALSE

              distributedAudio FALSE

              centralizedVideo FALSE

              distributedVideo FALSE

            }

          }

        }

        mcCapability 

        {

          centralizedConferenceMC FALSE

          decentralizedConferenceMC FALSE

        }

        rtcpVideoControlCapability FALSE

        mediaPacketizationCapability 

        {

          h261aVideoPacketization FALSE

        }

      }

      capabilityTable 

      {
  
{

          capabilityTableEntryNumber 32768

          capability nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 66

              manufacturerCode 32896

            }

            data '01'H

          }

        },

        {

          capabilityTableEntryNumber 15

          capability receiveAndTransmitDataApplicationCapability :

          {

            application t120 :separateLANStack :NULL

            maxBitRate 621700

          }

        },

        {

          capabilityTableEntryNumber 1

          capability receiveAudioCapability :nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 21324

            }

            data '020000000000F4010000F4010100040000000000...'H

          }

        },

        {

          capabilityTableEntryNumber 2

          capability receiveAudioCapability :g711Alaw64k :180

        },

        {

          capabilityTableEntryNumber 3

          capability receiveAudioCapability :g711Ulaw64k :180

        },

        {

          capabilityTableEntryNumber 4

          capability receiveAudioCapability :nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 21324

            }

            data '020000000000A0000000A0000400100000000000...'H

          }

        },

        {

          capabilityTableEntryNumber 5

          capability receiveAudioCapability :nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 21324

            }

            data '020000000000A0000000A0000400100000000000...'H

          }

        },

        {

          capabilityTableEntryNumber 6

          capability receiveAudioCapability :nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 21324
  
 }

            data '0200000000008000000080000500140000000000...'H

          }

        },

        {

          capabilityTableEntryNumber 7

          capability receiveAudioCapability :nonStandard :

          {

            nonStandardIdentifier h221NonStandard :

            {

              t35CountryCode 181

              t35Extension 0

              manufacturerCode 21324

            }

            data '0200000000008000000080000500140000000000...'H

          }

        },

        {

          capabilityTableEntryNumber 8

          capability receiveAudioCapability :g7231 :

          {

            maxAl-sduAudioFrames 12

            silenceSuppression FALSE

          }

        },

        {

          capabilityTableEntryNumber 10

          capability receiveVideoCapability :h263VideoCapability :

          {

            sqcifMPI 1

            maxBitRate 6217

            unrestrictedVector FALSE

            arithmeticCoding FALSE

            advancedPrediction FALSE

            pbFrames FALSE

            temporalSpatialTradeOffCapability TRUE

          }

        },

        {

          capabilityTableEntryNumber 11

          capability receiveVideoCapability :h263VideoCapability :

          {

            qcifMPI 1

            maxBitRate 6217

            unrestrictedVector FALSE

            arithmeticCoding FALSE

            advancedPrediction FALSE

            pbFrames FALSE

            temporalSpatialTradeOffCapability TRUE

          }

        },

        {

          capabilityTableEntryNumber 12

          capability receiveVideoCapability :h263VideoCapability :

          {

            cifMPI 2

            maxBitRate 6217

            unrestrictedVector FALSE

            arithmeticCoding FALSE

            advancedPrediction FALSE

            pbFrames FALSE

            temporalSpatialTradeOffCapability TRUE

          }

        },

        {

          capabilityTableEntryNumber 13

          capability receiveVideoCapability :h261VideoCapability :

          {

            qcifMPI 1

            temporalSpatialTradeOffCapability TRUE

            maxBitRate 6217

            stillImageTransmission FALSE

          }

        },
  
 {

          capabilityTableEntryNumber 14

          capability receiveVideoCapability :h261VideoCapability :

          {

            cifMPI 2

            temporalSpatialTradeOffCapability TRUE

            maxBitRate 6217

            stillImageTransmission FALSE

          }

        }

      }

      capabilityDescriptors 

      {


        {

          capabilityDescriptorNumber 6

          simultaneousCapabilities 

          {


            {

              8,

              7,

              5,

              6,

              3,

              2,

              1,

              4

            },


            {

              10

            },


            {

              15

            }

          }

        },

        {

          capabilityDescriptorNumber 7

          simultaneousCapabilities 

          {


            {

              8,

              7,

              5,

              6,

              3,

              2,

              1,

              4

            },


            {

              11

            },


            {

              15

            }

          }

        },

        {

          capabilityDescriptorNumber 8

          simultaneousCapabilities 

          {
  
 {

              8,

              7,

              5,

              6,

              3,

              2,

              1,

              4

            },


            {

              13

            },


            {

              15

            }

          }

        },

        {

          capabilityDescriptorNumber 9

          simultaneousCapabilities 

          {


            {

              8,

              7,

              5,

              6,

              3,

              2,

              1,

              4

            },


            {

              12

            },


            {

              15

            }

          }

        },

        {

          capabilityDescriptorNumber 10

          simultaneousCapabilities 

          {


            {

              8,

              7,

              5,

              6,

              3,

              2,

              1,

              4

            },


            {

              14

            },


            {

              15

            }

          }

        }

      }

    }

17. 

value MultimediaSystemControlMessage ::= response :terminalCapabilitySetAck :

    {

      sequenceNumber 1

    }

18. 

value MultimediaSystemControlMessage ::= request :masterSlaveDetermination :

    {

      terminalType 50

      statusDeterminationNumber 7862592

    }

19. 

value MultimediaSystemControlMessage ::= response :masterSlaveDeterminationAck :

    {

      decision slave :NULL

    }

20. 

value MultimediaSystemControlMessage ::= response :terminalCapabilitySetAck :

    {

      sequenceNumber 1

    }

21. 

value MultimediaSystemControlMessage ::= response :masterSlaveDeterminationAck :

    {

      decision master :NULL

    }

22. 

value MultimediaSystemControlMessage ::= request :openLogicalChannel :

    {

      forwardLogicalChannelNumber 1

      forwardLogicalChannelParameters 

      {

        dataType audioData :g711Alaw64k :20

        multiplexParameters h2250LogicalChannelParameters :

        {

          sessionID 1

          mediaControlChannel unicastAddress :iPAddress :

          {

            network 'C0A80363'H

            tsapIdentifier 18757

          }

        }

      }

    }

23. 

value MultimediaSystemControlMessage ::= request :openLogicalChannel :

    {

      forwardLogicalChannelNumber 257

      forwardLogicalChannelParameters 

      {

        dataType audioData :g711Alaw64k :20

        multiplexParameters h2250LogicalChannelParameters :

        {

          sessionID 1

          mediaGuaranteedDelivery FALSE

          mediaControlChannel unicastAddress :iPAddress :

          {

            network 'C0A80209'H

            tsapIdentifier 49607

          }

          mediaControlGuaranteedDelivery FALSE

          silenceSuppression TRUE

        }

      }

    }

24. 

value MultimediaSystemControlMessage ::= response :openLogicalChannelAck :

    {

      forwardLogicalChannelNumber 257

      forwardMultiplexAckParameters h2250LogicalChannelAckParameters :

      {

        sessionID 1

        mediaChannel unicastAddress :iPAddress :

        {

          network 'C0A80363'H

          tsapIdentifier 18756

        }

        mediaControlChannel unicastAddress :iPAddress :

        {

          network 'C0A80363'H

          tsapIdentifier 18757

        }

        flowControlToZero FALSE

      }

    }

25. 

value MultimediaSystemControlMessage ::= response :openLogicalChannelAck :

    {

      forwardLogicalChannelNumber 1

      forwardMultiplexAckParameters h2250LogicalChannelAckParameters :

      {

        sessionID 1

        mediaChannel unicastAddress :iPAddress :

        {

          network 'C0A80209'H

          tsapIdentifier 49606

        }

        mediaControlChannel unicastAddress :iPAddress :

        {

          network 'C0A80209'H

          tsapIdentifier 49607

        }

      }

    }

26. 

value RasMessage ::= registrationRequest :

    {

      requestSeqNum 28039

      protocolIdentifier { 0 0 8 2250 0 2 }

      discoveryComplete FALSE

      callSignalAddress 

      {

      }

      rasAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 49450

        }

      }

      terminalType 

      {

        mc FALSE

        undefinedNode FALSE

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointVendor 

      {

        vendor 

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18

        }

      }

      timeToLive 60

      keepAlive TRUE

      endpointIdentifier {"814EE09C0000001A"}

      willSupplyUUIEs FALSE

    }

27. 

value RasMessage ::= registrationConfirm :

    {

      requestSeqNum 28039

      protocolIdentifier { 0 0 8 2250 0 2 }

      callSignalAddress 

      {

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointIdentifier {"814EE09C0000001A"}

      alternateGatekeeper 

      {

      }

      timeToLive 60

      willRespondToIRR FALSE

    }

28. 

value MultimediaSystemControlMessage ::= command :endSessionCommand :disconnect :NULL

29. 

value MultimediaSystemControlMessage ::= command :endSessionCommand :disconnect :NULL

30. 

value H323_UserInformation ::= 

    {

      h323-uu-pdu 

      {

        h323-message-body releaseComplete :

        {

          protocolIdentifier { 0 0 8 2250 0 2 }

          reason undefinedReason :NULL

          callIdentifier 

          {

            guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

          }

        }

      }

    }

31. 

value RasMessage ::= disengageRequest :

    {

      requestSeqNum 28040

      endpointIdentifier {"814EE09C0000001A"}

      conferenceID '0C01EF01BD95D611AD4600A0CC5C89F1'H

      callReferenceValue 235

      disengageReason normalDrop :NULL

      callIdentifier 

      {

        guid '0B01EF01BD95D611AD4600A0CC5C89F1'H

      }

      answeredCall TRUE

    }

32. 

value RasMessage ::= disengageConfirm :

    {

      requestSeqNum 28040

    }

33. 

value RasMessage ::= registrationRequest :

    {

      requestSeqNum 28041

      protocolIdentifier { 0 0 8 2250 0 2 }

      discoveryComplete FALSE

      callSignalAddress 

      {

      }

      rasAddress 

      {

        ipAddress :

        {

          ip 'C0A80363'H

          port 49450

        }

      }

      terminalType 

      {

        mc FALSE

        undefinedNode FALSE

      }

      gatekeeperIdentifier {"zonetwo"}

      endpointVendor 

      {

        vendor 

        {

          t35CountryCode 181

          t35Extension 0

          manufacturerCode 18