Configuring MGCP 1.0

MGCP bases its call control and intelligence in centralized call agents, also called media gateway controllers. The call agents issue commands to simple, low-cost endpoints, which are housed in media gateways (MGs), and the call agents also receive event reports from the gateways. MGCP messages between call agents and media gateways are sent with Internet Protocol over User Datagram Protocol (IP/UDP).

The MGCP 1.0 Including NCS 1.0 and TGCP 1.0 Profiles feature provides protocols for RGWs and TGWs, which sit at the border of the packet network to provide an interface between traditional, circuit-based voice services and the packet network. Residential gateways offer a small number of analog line interfaces, while trunking gateways generally manage a large number of digital trunk circuits.

Two basic MGCP constructs are endpoints and connections. An endpoint is a source or sink for call data (RTP/IP) that is flowing through the gateway. A common type of endpoint is found at the physical interface between the POTS (plain old telephone service) or Public Switched Telephone Network (PSTN) service and the gateway; this type of endpoint might be an analog voice port or a digital DS0 group. There are other types of endpoints as well, and some are logical rather than physical. An endpoint is identified by a two-part endpoint name that contains the name of the entity on which it exists (for example, an access server or router) and the local name by which it is known (for example, a port identifier).

A connection is a temporary allocation of resources that enables a call to be completed. One or more connections is necessary to complete a call. Connections have names that identify them with the call to which they belong. Connections can be one-to-one or multipoint. Calls and connections are initiated, modified, and deleted on instructions from call agents.

Call agents manage call flow through standard MGCP commands that are sent to the endpoints under their control. The commands are delivered in standard ASCII text, and may contain session descriptions transmitted in Session Description Protocol (SDP), a text-based protocol. These messages are sent over IP/UDP.

Call agents keep track of endpoint and connection status through the gateway's reporting of standard events that are detected from endpoints and connections. Call agents also direct gateways to apply certain standard signals when a POTS or PSTN connection expects them. For example, when someone picks up a telephone handset, an off-hook event is detected on an endpoint on the residential gateway to which the telephone is connected. The gateway reports the event to a call agent, which orders the gateway to apply the dial-tone signal to the endpoint reporting the off-hook event. The person picking up the handset hears dial tone.

Related events and signals are grouped into standard packages that apply to particular types of endpoints. For instance, the off-hook event is found in the line package, which is associated with analog-line endpoints, which in turn are associated with residential gateways. Standard events, signals, and packages are defined in the NCS, TGCP, and MGCP standards and RFCs listed in the " Preface ."

The figure below shows a hypothetical MGCP network with both residential and trunking gateways. The residential gateway has telephone sets connected to the gateway's FXS voice ports. MGCP or NCS over IP/UDP is used for call control and reporting to the call agent, while Real-Time Transport Protocol (RTP) is used to transmit the actual voice data.

The figure below also shows two trunking gateways with T1 (or E1) connections to the PSTN. Incoming time-division multiplexing (TDM) data is sent through the gateway into the packet network using RTP. MGCP or TGCP over IP/UDP is used for call control and reporting to the call agent. Signaling System 7 (SS7) data travels a different route, however, bypassing the trunking gateway entirely in favor of a specialized signaling gateway, where the signaling data is transformed to ISUP/IP format and relayed to the call agent. Communication between two signaling gateways in the same packet network can be done with Integrated Services Digital Networks User Part over Internet Protocol (ISUP/IP), H.323, or Session Initiation Protocol (SIP).

This task is required. Voice ports or DS0 groups that are acting as MGCP endpoints must be identified and associated with the MGCP application. The commands to identify MGCP endpoints depend on the type of endpoint that you are configuring.

To identify endpoints and configure the MGCP application, use the commands in the appropriate table, beginning in global configuration mode:

• Analog CAS and POTS Lines
  
• Digital CAS Trunks
  
• ISUP Signaling Trunks
  
• FGD-OS Trunks
  
• Digital VoATM with AAL2 PVC
  

SUMMARY STEPS

1.    mgcp call-agent {dns-name | ip-address} [port] [service-type type] [version protocol-version]

2.    mgcp behavior {auep | signal} v0.1

3.    mgcp sdp simple

4.    mgcp sdp xpc-codec

5.    mgcp codec type [packetization-period value]

6.    no mgcp timer receive-rtcp

7.    no mgcp piggyback message

8.    mgcp endpoint offset

9.    mgcp persistent {hookflash | offhook | onhook}

10.    mgcp request timeout {timeout-value | max maxtimeout-value}

11.    mgcp dtmf-relay voip codec {all | low-bit-rate} mode {cisco | nse | out-of-band}

12.    mgcp max-waiting-delay value

13.    mgcp restart-delay value

14.    mgcp vad

15.    mgcp ip-tos {high-reliability | high-throughput | low-cost | low-delay | rtp precedence value | signaling precedence value}

16.    mgcp quality-threshold {hwm-cell-loss value | hwm-jitter-buffer value | hwm-latency value | hwm-packet-loss value | lwm-cell-loss value | lwm-jitter-buffer value | lwm-latency value | lwm-packet-loss value}

17.    mgcp playout { adaptive init-value min-value max-value | fax value | fixed init-value

18.    mgcp package-capability [package-type]

19.    mgcp default package [package-type]

DETAILED STEPS

	Command or Action	Purpose
Step 1	mgcp call-agent {dns-name | ip-address} [port] [service-type type] [version protocol-version] Example: Router(config)# mgcp call-agent {dns-name | ip-address } [port ] [service-type type ] [version protocol-version ]	Configures parameters for communicating with the call agent (media gateway controller). Note    You can define a call agent globally with the mgcp call-agent command, or locally for each MGCP profile with the call-agent command, but not both. Whichever command you configure first blocks configuration of the other.
Step 2	mgcp behavior {auep | signal} v0.1 Example: Router(config)# mgcp behavior {auep | signal} v0.1	(Optional) Forces a gateway to follow the MGCP Version 0.1 protocol for a specified behavior. All other MGCP functionality continues to behave according to the version of MGCP that is specified in the mgcp call-agent command. auep --Forces the gateway to reply to an Audit Endpoint (AUEP) command according to the MGCP Version 0.1 specification. If this keyword is used, an AUEP command on an out-of-service endpoint results in a return code of 501. Use this keyword with Cisco IOS Release 12.3(2)T1 or a later release. signal --Forces the gateway to handle signaling tones according to the MGCP Version 0.1 specification. The MGCP 0.1 specification treats call signaling tones as on-off tones, which terminate only after a specific MGCP message has been sent to stop the signal. The specifications for MGCP 1.0 and later versions treat call signaling tones as timeout tones, which terminate when the appropriate timeout timer expires. Use this keyword with Cisco IOS Release 12.3(4)T or a later release. v0.1 --Selects MGCP Version 0.1.
Step 3	mgcp sdp simple Example: Router(config)# mgcp sdp simple	Specifies that a subset of the SDP fields should be used.
Step 4	mgcp sdp xpc-codec Example: Router(config)# mgcp sdp xpc-codec	Enables codec negotiation in the SDP.
Step 5	mgcp codec type [packetization-period value] Example: Router(config)# mgcp codec type [packetization-period value	Selects the default codec type and its optional packetization period value.
Step 6	no mgcp timer receive-rtcp Example: Router(config)# no mgcp timer receive-rtcp	Disables the timer used by a gateway to disconnect a VoIP call when the IP connectivity is lost with the remote gateway. The timer is known as the RTP Control Protocol (RTCP) transmission interval timer.
Step 7	no mgcp piggyback message Example: Router(config)# no mgcp piggyback message	Disables piggyback messages.
Step 8	mgcp endpoint offset Example: Router(config)# mgcp endpoint offset	Increments the voice-port or DS0-group portion of the endpoint name for NCS 1.0.
Step 9	mgcp persistent {hookflash | offhook | onhook} Example: Router(config)# mgcp persistent {hookflash | offhook | onhook}	Enables call-agent notification of the specified type of event.
Step 10	mgcp request timeout {timeout-value | max maxtimeout-value} Example: Router(config)# mgcp request timeout {timeout-value | max maxtimeout-value }	Specifies how long the gateway waits for a call-agent response to a request before retransmitting the request.
Step 11	mgcp dtmf-relay voip codec {all | low-bit-rate} mode {cisco | nse | out-of-band} Example: Router(config)# mgcp dtmf-relay voip codec {all | low-bit-rate} mode {cisco | nse | out-of-band}	Ensures accurate forwarding of digits with a compressed codec.
Step 12	mgcp max-waiting-delay value Example: Router(config)# mgcp max-waiting-delay value	Specifies the number of milliseconds to wait after a restart before connecting with the call agent. Range is from 0 to 600,000 (600 seconds). Default is 3000. If used, these values should be staggered among gateways to avoid having large numbers of gateways connecting with the call agent at the same time after a mass restart.
Step 13	mgcp restart-delay value Example: Router(config)# mgcp restart-delay value	Sets the delay value sent in the RestartInProgress (RSIP) graceful teardown, in seconds. Range is from 0 to 600. Default is 0.
Step 14	mgcp vad Example: Router(config)# mgcp vad	Enables voice activity detection (VAD) as a default for MGCP calls. Default is disabled.
Step 15	mgcp ip-tos {high-reliability | high-throughput | low-cost | low-delay | rtp precedence value | signaling precedence value} Example: Router(config)# mgcp ip-tos {high-reliability | high-throughput | low-cost | low-delay | rtp precedence value | signaling precedence value }	Enables the IP type of service (ToS) for MGCP-controlled connections.
Step 16	mgcp quality-threshold {hwm-cell-loss value | hwm-jitter-buffer value | hwm-latency value | hwm-packet-loss value | lwm-cell-loss value | lwm-jitter-buffer value | lwm-latency value | lwm-packet-loss value} Example: Router(config)# mgcp quality-threshold {hwm-cell-loss value | hwm-jitter-buffer value | hwm-latency value | hwm-packet-loss value | lwm-cell-loss value | lwm-jitter-buffer value | lwm-latency value | lwm-packet-loss value }	Sets the jitter buffer size threshold, latency threshold, and packet-loss threshold parameters.
Step 17	mgcp playout { adaptive init-value min-value max-value | fax value | fixed init-value Example: Router(config)# mgcp playout {adaptive init-value min-value max-value | fax value | fixed init-value }	Configures the jitter buffer packet size in milliseconds for MGCP calls. The default is adaptive 60 4 200 adaptive init-value min-value max-value --Defines the range for the jitter-buffer packet size. The range for each value is 4 to 250. Default is 60 4 200. Note that init-value must be between min-valueand max-value. fax value --Defines the fax playout buffer size. The range is 0 to 700. The default value is 300. The range and default value might vary with different platforms. See the platform digital signal processor (DSP) specifications before setting this value. fixed init-value --Defines the fixed size for the jitter-buffer packet size. The range is 4 to 250. There is no default value.
Step 18	mgcp package-capability [package-type] Example: Router(config)# mgcp package-capability [package-type ]	Specifies an MGCP package to be supported on this gateway. Configure one package at a time and repeat this command to configure support for more than one package. Available package types vary with the type of gateway.
Step 19	mgcp default package [package-type] Example: Router(config)# mgcp default package [package-type ]	Defines the package to be used as the default when no package is named with an event. Available package types vary with the type of gateway.

SUMMARY STEPS

1.    mgcp profile {profile-name | default}

2.    description text

3.    call-agent {dns-name | ip-address} [port] [service-type type] [version protocol-version]

4.    voice-port port-number

5.    default command

6.    package persistent package-name

7.    timeout tsmax tsmax-value

8.    timeout tdmax tdmax-value

9.    timeout tdinit tdinit-value

10.    timeout tcrit tcrit-value

11.    timeout tpar tpar-value

12.    timeout thist thist-value

13.    timeout tone mwi mwitone-value

14.    timeout tone ringback ringbacktone-value

15.    timeout tone ringback connection connectiontone-value

16.    timeout tone network congestion congestiontone-value

17.    timeout tone busy busytone-value

18.    timeout tone dial dialtone-value

19.    timeout tone dial stutter stuttertone-value

20.    timeout tone ringing ringingtone-value

21.    timeout tone ringing distinctive distinctivetone-value

22.    timeout tone reorder reordertone-value

23.    timeout tone cot1 continuity1tone-value

24.    timeout tone cot2 continuity2tone-value

25.    max1 lookup

26.    max1 retries value

27.    max2 lookup

28.    max2 retries value

29.    exit

DETAILED STEPS

	Command or Action	Purpose
Step 1	mgcp profile {profile-name | default} Example: Router(config)# mgcp profile {profile-name | default}	Initiates MGCP profile mode, in which you create and configure a named MGCP profile associated with one or more endpoints, or configure the default profile. Effective with Cisco IOS Release 12.4(24)T3, the maximum number of MGCP profiles that can be configured is increased from 13 (12 plus 1 default) to 29 (28 plus 1 default).
Step 2	description text Example: Router(config-mgcp-profile)# description text	Provides a description for the profile.
Step 3	call-agent {dns-name | ip-address} [port] [service-type type] [version protocol-version] Example: Router(config-mgcp-profile)# call-agent {dns-name | ip-address } [port ] [service-type type ] [version protocol-version ]	Defines the call agent's DNS name or IP address, UDP port number, service type, and protocol version. (Not used when configuring the default profile.) Note    You can define a call agent globally with the mgcp call-agentcommand, or locally for each MGCP profile with the call-agentcommand, but not both. Whichever command you configure first blocks configuration of the other.
Step 4	voice-port port-number Example: Router(config-mgcp-profile)# voice-port port-number	Provides the voice port number or DS0 group number for the endpoint to be associated with this MGCP profile. Repeat this command to add more than one endpoint to the profile. (Not used when configuring the default profile.)
Step 5	default command Example: Router(config-mgcp-profile)# default command	Restores the parameter represented by command to its default value.
Step 6	package persistent package-name Example: Router(config-mgcp-profile)# package persistent package-name	Configures the package type used when reporting persistent events for an MF CAS endpoint type. Valid types are ms-package and mt-package.Default is ms-package.
Step 7	timeout tsmax tsmax-value Example: Example: Router(config-mgcp-profile)# timeout tsmax tsmax-value	Configures the maximum timeout value after which MGCP messages are removed from the retransmission queue, in seconds. Range is from 1 to 1000. Default is 20.
Step 8	timeout tdmax tdmax-value Example: Router(config-mgcp-profile)# timeout tdmax tdmax-value	Configures the maximum timeout value for the disconnected procedure (Tdmax), in seconds. Range is from 300 to 600. Default is 600.
Step 9	timeout tdinit tdinit-value Example: Router(config-mgcp-profile)# timeout tdinit tdinit-value	Configures the initial waiting delay value (Tdinit) used as the timer for the disconnect procedure, in seconds. Range is from 1 to 30. Default is 15.
Step 10	timeout tcrit tcrit-value Example: Router(config-mgcp-profile)# timeout tcrit tcrit-value	Configures the critical timeout value (Tcritical) for the interdigit timer used in digit map matching, in seconds. Range is from 1 to 600. Default is 4.
Step 11	timeout tpar tpar-value Example: Router(config-mgcp-profile)# timeout tpar tpar-value	Configures the partial timeout value (Tpartial) for the interdigit timer used in digit map matching, in seconds. Range is from 1 to 60. Default is 16.
Step 12	timeout thist thist-value Example: Router(config-mgcp-profile)# timeout thist thist-value	Configures the packet storage timeout value, in seconds. Range is from 1 to 1100. Default is 30.
Step 13	timeout tone mwi mwitone-value Example: Router(config-mgcp-profile)# timeout tone mwi mwitone-value	Configures the message waiting indicator timeout value, in seconds. Range is from 1 to 600. Default is 16.
Step 14	timeout tone ringback ringbacktone-value Example: Router(config-mgcp-profile)# timeout tone ringback ringbacktone-value	Configures the ringback tone timeout value, in seconds. Range is from 1 to 600. Default is 180.
Step 15	timeout tone ringback connection connectiontone-value Example: Router(config-mgcp-profile)# timeout tone ringback connection connectiontone-value	Configures the timeout value for ringback tone on connection, in seconds. Range is from 1 to 600. Default is 180.
Step 16	timeout tone network congestion congestiontone-value Example: Router(config-mgcp-profile)# timeout tone network congestion congestiontone-value	Configures the network congestion tone timeout value, in seconds. Range is from 1 to 600. Default is 180.
Step 17	timeout tone busy busytone-value Example: Router(config-mgcp-profile)# timeout tone busy busytone-value	Configures the busy tone timeout value, in seconds. Range is from 1 to 600. Default is 3.
Step 18	timeout tone dial dialtone-value Example: Router(config-mgcp-profile)# timeout tone dial dialtone-value	Configures the dial tone timeout value, in seconds. Range is from 1 to 600. Default is 16.
Step 19	timeout tone dial stutter stuttertone-value Example: Router(config-mgcp-profile)# timeout tone dial stutter stuttertone-value	Configures the stutter dial tone timeout value, in seconds. Range is from 1 to 600. Default is 16.
Step 20	timeout tone ringing ringingtone-value Example: Router(config-mgcp-profile)# timeout tone ringing ringingtone-value	Configures the ringing tone timeout value, in seconds. Range is from 1 to 600. Default is 180.
Step 21	timeout tone ringing distinctive distinctivetone-value Example: Router(config-mgcp-profile)# timeout tone ringing distinctive distinctivetone-value	Configures the distinctive ringing tone timeout value, in seconds. Range is from 1 to 600. Default is 180.
Step 22	timeout tone reorder reordertone-value Example: Router(config-mgcp-profile)# timeout tone reorder reordertone-value	Configures the reorder tone timeout value, in seconds. Range is from 1 to 600. Default is 30.
Step 23	timeout tone cot1 continuity1tone-value Example: Router(config-mgcp-profile)# timeout tone cot1 continuity1tone-value	Configures the continuity1 tone timeout value, in seconds. Range is from 1 to 600. Default is 3.
Step 24	timeout tone cot2 continuity2tone-value Example: Router(config-mgcp-profile)# timeout tone cot2 continuity2tone-value	Configures the continuity2 tone timeout value, in seconds. Range is from 1 to 600. Default is 3.
Step 25	max1 lookup Example: Router(config-mgcp-profile)# max1 lookup	Enables the DNS lookup procedure after the suspicion threshold is reached. Default is enabled.
Step 26	max1 retries value Example: Router(config-mgcp-profile)# max1 retries value	Sets the suspicion threshold number of retries. Range is from 3 to 30. Default is 5.
Step 27	max2 lookup Example: Router(config-mgcp-profile)# max2 lookup	Enables the DNS lookup procedure after the disconnect threshold is reached. Default is enabled.
Step 28	max2 retries value Example: Router(config-mgcp-profile)# max2 retries value	Sets the disconnect threshold number of retries. Range is from 3 to 30. Default is 7.
Step 29	exit Example: Router(config-mgcp-profile)# exit	Exits the current mode.

SUMMARY STEPS

1.    show running-configuration

2.    show mgcp [connection | endpoint | profile [profile-name] | statistics

DETAILED STEPS

	Command or Action	Purpose
Step 1	show running-configuration Example: Router# show running-configuration	Displays the current configuration settings.
Step 2	show mgcp [connection | endpoint | profile [profile-name] | statistics Example: Router# show mgcp [connection | endpoint | profile [profile-name ] | statistics ]	Displays the current MGCP settings.

• Troubleshooting Tips
  

Router# show rtp statistics
RTP Statistics info:
No. CallId Xmit-pkts Xmit-bytes Rcvd-pkts  Rcvd-bytes Lost pkts  Jitter Latenc
1   17492  0x8A      0x5640     0x8A       0x5640     0x0        0x0      0x0
Router# show rtp statistics
RTP Statistics info:
No. CallId Xmit-pkts Xmit-bytes Rcvd-pkts  Rcvd-bytes Lost pkts  Jitter Latenc
1   17492  0xDA      0x8840     0xDB       0x88E0     0x0        0x160    0x0

Router# show mgcp
MGCP Admin State ACTIVE, Oper State ACTIVE - Cause Code NONE
MGCP call-agent: 172.29.248.51  Initial protocol service is MGCP, v. 1.0
...
MGCP gateway port: 2727, MGCP maximum waiting delay 3000
...
Router# show mgcp profile
MGCP Profile nycprofile
Description: NY branch office configuration
Call-agent: 10.14.2.200 Initial protocol service is MGCP, v. 1.0

Router# show mgcp connection
Endpoint  Call_ID(C) Conn_ID(I) (P)ort (M)ode (S)tate (C)odec (E)vent[SIFL] (R)esult[EA]
1. S0/DS1-1/5      C=F123AB,5,6  I=0x3  P=16506,16602  M=3  S=4  C=1 E=2,0,0,2  R=0,0
2. S0/DS1-1/6      C=F123AB,7,8  I=0x4  P=16602,16506  M=3  S=4  C=1 E=0,0,0,0  R=0,0
Router# show mgcp endpoint
T1/0 ds0-group 0 timeslots 1-24
T1/1 ds0-group 0 timeslots 1-24
T1/2 ds0-group 0 timeslots 1-24
T1/3 ds0-group 0 timeslots 1-24

Router# debug mgcp packets input-hex
Media Gateway Control Protocol input packets in hex value debugging is on
MGCP Packet received -
DLCX 49993 * MGCP 0.1
MGCP Packet received in hex -
44 4C 43 58 20 34 39 39 39 33 20 2A 20 4D 47 43 50 20 30 2E 31 A
send_mgcp_msg, MGCP Packet sent --->
250 49993

This example shows how to set up a Cisco uBR925 as an MGCP residential gateway. The call agent is specified to the cable router (Cisco uBR925, Cisco CVA122, or Cisco CVA122E) by a Dynamic Host Configuration Protocol (DHCP) offer on a cable radio frequency (RF) network. On completion of the DHCP offer, the call agent is set in the MGCP profile on the cable modem. This setting is displayed with the show mgcp profile command. The router does not show the call agent in the CLI.

version 12.2
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname hydepark
!
logging rate-limit console 10 except errors
!
clock timezone - 0 6
ip subnet-zero
no ip routing
ip domain-name example.com
ip name-server 10.0.0.229
!
ip ssh time-out 120
ip ssh authentication-retries 3
no ip dhcp-client network-discovery
!
interface Ethernet0
 ip address 192.168.0.11 255.255.0.0
 no ip route-cache
 no ip mroute-cache
 bridge-group 59
 bridge-group 59 spanning-disabled
!
interface cable-modem0
 no ip route-cache
 no ip mroute-cache
 cable-modem boot admin 2
 cable-modem boot oper 5
 bridge-group 59
 bridge-group 59 spanning-disabled
!
ip classless
no ip http server
no ip http cable-monitor
!
snmp-server manager
!
voice-port 0
 input gain -2
 output attenuation 0
!
voice-port 1
 input gain -2
 output attenuation 0
!
mgcp
! Use this CLI with NCS 1.0
mgcp endpoint offset
!
mgcp profile default
!
dial-peer voice 100 pots
 application MGCPAPP
 port 0
!
dial-peer voice 101 pots
 application MGCPAPP
 port 1
!
line con 0
line vty 0 4
 login
!
end

This example shows how to set up a Cisco uBR925 as a residential gateway:

version 12.2
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname monticello
!
logging rate-limit console 10 except errors
!
clock timezone - 0 6
ip subnet-zero
ip domain-name example.com
ip name-server 10.0.0.229
!
ip ssh time-out 120
ip ssh authentication-retries 3
no ip dhcp-client network-discovery
!
interface Ethernet0
 ip address 192.168.0.11 255.255.0.0
 no ip route-cache
 no ip mroute-cache
 bridge-group 59
 bridge-group 59 spanning-disabled
!
interface cable-modem0
 no ip route-cache
 no ip mroute-cache
 shutdown
 cable-modem boot admin 2
 cable-modem boot oper 5
 no cable-modem compliant bridge
 cable-modem voip clock-internal
 bridge-group 59
 bridge-group 59 spanning-disabled
!
ip classless
no ip http server
no ip http cable-monitor
!
ip default-gateway 172.16.1.1
!
! We are using the cable modem without its RF interface. So
! route IP traffic out the Ethernet0 interface.
!
ip route 0.0.0.0 0.0.0.0 Ethernet0
!
snmp-server manager
!
voice-port 0
 input gain -2
 output attenuation 0
!
voice-port 1
 input gain -2
 output attenuation 0
!
mgcp
!
! The ip address of call agent below can be a FQDN as well.
mgcp call-agent 10.0.0.224 service-type ncs version 1.0
! Use this CLI with NCS 1.0
mgcp endpoint offset
!
mgcp profile default
!
dial-peer voice 100 pots
 application MGCPAPP
 port 0
!
dial-peer voice 101 pots
 application MGCPAPP
 port 1
!
line con 0
line vty 0 4
 login
!
end

The call agent is specified to the cable router (Cisco uBR925, Cisco CVA122, or Cisco CVA122E) by a DHCP offer on a cable RF network. On completion of the DHCP offer, the call agent is set in the MGCP profile on the cable modem. This setting is displayed with the show mgcp profile command. The router does not show the call agent in the CLI.

version 12.2
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service internal
!
hostname mtvernon
!
no logging buffered
logging rate-limit console 10 except errors
!
clock timezone - -5
ip subnet-zero
no ip routing
ip domain-name example.com
ip name-server 10.0.0.229
!
no ip dhcp-client network-discovery
!
interface Ethernet0
 ip address 10.20.0.59 255.255.0.0
 no ip route-cache
 no ip mroute-cache
 shutdown
 bridge-group 59
 bridge-group 59 spanning-disabled
!
interface cable-modem0
 no ip route-cache
 no ip mroute-cache
 cable-modem boot admin 2
 cable-modem boot oper 5
 bridge-group 59
 bridge-group 59 spanning-disabled
!
interface usb0
 ip address 10.20.0.59 255.255.0.0
 no ip route-cache
 no ip mroute-cache
 arp timeout 0
 bridge-group 59
 bridge-group 59 spanning-disabled
!
ip classless
no ip http server
no ip http cable-monitor
!
access-list 1 deny   10.0.0.254
access-list 1 permit any
snmp-server packetsize 4096
snmp-server manager
call rsvp-sync
!
voice-port 0
 input gain -2
 output attenuation 0
 timeouts interdigit 2
!
voice-port 1
 input gain -2
 output attenuation 0
 timeouts interdigit 2
!
mgcp
!
mgcp profile default
!
mgcp profile test
 call-agent test service-type ncs version 1.0
!
dial-peer voice 100 pots
 application MGCPAPP
 port 0
!
dial-peer voice 101 pots
 application MGCPAPP
 port 1
!
line con 0
 exec-timeout 0 0
line vty 0 4
 exec-timeout 0 0
 login
!
end

This example shows a Cisco 2620 router being configured as an analog residential gateway:

version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname betty-2620
!
voice-port 1/0/0
!
voice-port 1/0/1
!
dial-peer voice 1 pots
application mgcpapp
destination-pattern 100
port 1/0/0
!
dial-peer voice 2 pots
application mgcpapp
destination-pattern 101
port 1/0/1
!
process-max-time 200
!
mgcp 4000
mgcp call-agent 10.14.2.200 4000 service-type mgcp version 1.0
mgcp sdp simple
no mgcp timer receive-rtcp
mgcp sdp xpc-codec
no mgcp piggyback message
mgcp endpoint offset
no mgcp persistent hook on
no mgcp persistent hook flash
mgcp request timeout 1000
mgcp dtmf-relay codec all mode cisco
mgcp max-waiting-delay 600000
mgcp restart-delay 500
mgcp codec g711ulaw packetization-period 10
mgcp ip-tos rtp precedence 7
mgcp quality-threshold lwm-jitter-buffer 59
mgcp quality-threshold lwm-latency 199
mgcp quality-threshold lwm-packet-loss 2
mgcp playout adaptive 100 50 150
mgcp package-capability dtmf-package
mgcp package-capability mf-package
mgcp package-capability rtp-package
mgcp package-capability as-package
isdn voice-call-failure 0
srcp 2428
cns event-service server
!
mgcp profile cisco
 call-agent 10.14.2.200 4000 service-type mgcp version 1.0
 voice-port 0:1
 package persistent mt-package
 timeout tsmax 100
 timeout tdinit 30
 timeout tcrit 600
 timeout tpar 600
 timeout thist 60
 timeout tone mwi 600
 timeout tone ringback 600
 timeout tone ringback connection 600
 timeout tone network congestion 600
 timeout tone busy 600
 timeout tone dial 600
 timeout tone dial stutter 600
 timeout tone ringing 600
 timeout tone ringing distinctive 600
 timeout tone reorder 600
 timeout tone cot1 600
 timeout tone cot2 600
 max1 retries 10
 no max2 lookup
 max2 retries 10
!
interface Ethernet0/0
 ip address 10.14.12.9 255.0.0.0
!
interface Ethernet0/1
 no ip address
 shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.14.0.1
no cdp run
!
line con 0
exec-timeout 0 0
line aux 0
line vty 0 4
exec-timeout 0 0
 password test
 login
!
end

This example shows a Cisco 3660 that is being configured for CAS trunks. The association of endpoints with the MGCP application is made in the dial-peer configuration.

version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname charley-3660
!
controller t1 1/0
 linecode b8zs
 clock source line secondary 1
 ds0-group 0 timeslots 1-24 type e&m-winkstart
!
controller t1 1/1
 linecode b8zs
 clock source line secondary 1
 ds0-group 0 timeslots 1-24 type e&m-winkstart
!
ip subnet-zero
!
voice-port 1/0:0
 dial-type mf
!
voice-port 1/1:0
 dial-type mf
!
dial-peer voice 1 pots
 application mgcpapp
 destination-pattern 100
 port 1/0:0
!
dial-peer voice 2 pots
 application mgcpapp
 destination-pattern 101
 port 1/1:0
!
mgcp 4000
mgcp call-agent 10.14.2.200 4000 service-type mgcp version 1.0
mgcp sdp simple
no mgcp timer receive-rtcp
mgcp sdp xpc-codec
no mgcp piggyback message
mgcp endpoint offset
mgcp persistent hook on
mgcp persistent hook flash
mgcp request timeout 1000
mgcp dtmf-relay codec all mode cisco
mgcp max-waiting-delay 600000
mgcp restart-delay 500
mgcp codec g711ulaw packetization-period 10
mgcp ip-tos rtp precedence 7
mgcp quality-threshold lwm-jitter-buffer 59
mgcp quality-threshold lwm-latency 199
mgcp quality-threshold lwm-packet-loss 2
mgcp playout adaptive 100 50 150
mgcp package-capability dtmf-package
mgcp package-capability mf-package
mgcp package-capability rtp-package
mgcp package-capability as-package
isdn voice-call-failure 0
srcp 2428
cns event-service server
!
mgcp profile cisco
 call-agent 10.14.2.200 4000 service-type mgcp version 1.0
 voice-port 1/0:0
 package persistent mt-package
 timeout tsmax 100
 timeout tdinit 30
 timeout tcrit 600
 timeout tpar 600
 timeout thist 60
 timeout tone mwi 600
 timeout tone ringback 600
 timeout tone ringback connection 600
 timeout tone network congestion 600
 timeout tone busy 600
 timeout tone dial 600
 timeout tone dial stutter 600
 timeout tone ringing 600
 timeout tone ringing distinctive 600
 timeout tone reorder 600
 timeout tone cot1 600
 timeout tone cot2 600
 max1 retries 10
 no max2 lookup
 max2 retries 10
!
interface FastEthernet0/0
 ip address 10.14.12.12 255.0.0.0
 speed auto
 duplex auto
!
interface FastEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.14.0.1
no ip http server
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
line vty 0 4
 exec-timeout 0 0
 password trial
 login
!
end

The following example shows a Cisco MC3810 being configured as a residential gateway:

version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log uptime
!
hostname harry
!
logging buffered
!
ip subnet-zero
ip host buffalo 192.168.254.254
!
mgcp
mgcp call-agent 10.14.90.1
!
voice-card 0
 codec complexity high
!
controller T1 0
 framing esf
 linecode b8zs
!
interface Ethernet0
 ip address 10.14.92.3 255.255.0.0
!
interface Serial0
 shutdown
!
interface Serial1
 no ip address
 no ip route-cache
 no ip mroute-cache
 shutdown
!
interface FR-ATM20
 no ip address
 shutdown
!
ip default-gateway 10.14.0.1
ip route 192.168.254.0 255.255.255.0 10.14.0.1
!
voice-port 1/1
!
dial-peer voice 1 pots
 application mgcpapp
 port 1/1
!
line con 0
 exec-timeout 0 0
 transport input none
line aux 0
line 2 3
line vty 0 4
login
!
end

This example shows a Cisco MC3810 being configured as a VoAAL2 gateway using AAL2 PVCs:

version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname stella-mc3810
!
network-clock base-rate 56k
ip subnet-zero
no ip domain-lookup
ip host camel 192.168.254.254
ip host buffalo 192.168.254.253
!
mgcp
mgcp call-agent 10.14.117.4 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode nse
mgcp dtmf-relay voaal2 codec all
mgcp modem passthrough nse
mgcp package-capability rtp-package
mgcp tse payload 100
mgcp timer receive-rtcp 100
mgcp timer net-cont-test 3000
isdn voice-call-failure 0
!
voice-card 0
!
controller T1 0
    mode atm
    framing esf
    linecode b8zs
!
interface Ethernet0
    ip address 10.14.121.1 255.255.0.0
!
interface Serial0
    no ip address
    no ip mroute-cache
    shutdown
    no fair-queue
!
interface Serial1
    no ip address
    shutdown
!
interface ATM0
    no ip address
    ip mroute-cache
    no atm ilmi-keepalive
!
interface ATM0.2 point-to-point
   pvc 2/200
      vbr-rt 760 760 100
      encapsulation aal2
      vcci 2
!
interface FR-ATM20
     no ip address
     shutdown
!
router igrp 1
    redistribute connected
    network 1.0.0.0
!
ip default-gateway 10.14.0.1
no ip http server
ip classless
ip route 192.168.254.0 255.255.255.0 10.14.0.1
!
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
voice-port 1/1
!
voice-port 1/2
     shutdown
!
voice-port 1/6
     shutdown
!
dial-peer voice 1 pots
    application mgcpapp
    port 1/1
!
line con 0
    transport input none
line aux 0
   line 2 3
 line vty 0 4
    password lab
    login
!
end

Note	See the "Additional References for MGCP and SGCP" section in the Preface for related documents, standards, and MIBs. See " Glossary " for definitions of terms in this guide.