Begrijp hoe CVP fout Call Flow Works werkt

Inleiding

Dit document beschrijft hoe de Cisco Customer Voice Portal (CVP) foutmelding werkt.

Voorwaarden

Vereisten

Cisco raadt kennis van de volgende onderwerpen aan:

• CVP-server
• Cisco Unified Intelligent Contact Management (ICM)
• Cisco Unified Contact Center Enterprise (UCCE)

Gebruikte componenten

De informatie in dit document is gebaseerd op deze softwareversies:

• CVP-server 11.5
• Cisco Virtual Voice browser (CVVB) 11.5
• Cisco Unified border-element (CUBE)
• Cisco Voice eXtensible Markup Language (VXML) gateway
• Cisco Unified Call Manager (CUCM) 11.0
• Session Initiation Protocol (SIP)

De informatie in dit document is gebaseerd op de apparaten in een specifieke laboratoriumomgeving. Alle apparaten die in dit document worden beschreven, hadden een opgeschoonde (standaard)configuratie. Als uw netwerk levend is, zorg er dan voor dat u de mogelijke impact van om het even welke opdracht begrijpt.

Achtergrondinformatie

Wanneer overlevingsservice niet in CUBE of Ingress Gateway is ingeschakeld, roept de CVP-foutstroom een cvperror.tcl op die is ingesteld in de Ingress Gateway/CUBE of in de VXML Gateway/CVVB.  Deze TCL (Gereedschapsopdrachttaal) wordt geactiveerd wanneer een label van 929292 dat door CVP gegenereerd is, naar de Ingress Gateway/CUBE wordt verzonden in een SIP 302-bericht dat tijdelijk verplaatst is of een SIP-melding.

SIP REFER wordt alleen uitgevoerd wanneer CVP de oproep al heeft beantwoord. CVP voert een herleiding wanneer de oproep niet is beantwoord. In dat geval stuurt het een 302-account, tijdelijk naar de initiatiefnemer van het bericht ( Ingress Gateway/CUBE ), met onder meer een bestemming opnieuw sturen in de contactkop.

Ongeacht SIP REFER of 302 Verhuisd Tijdelijk bericht, is de belangrijkste taak van het script cvperror.tcl om een kritieke foutmelding te spelen die in flitser is opgeslagen op de Ingress Gateway/CUBE of VXML Gateway/CVVB.

CVP fout Call Flow - 302 tijdelijk verplaatst

Gespreksstroom:

PSTN-telefoonnetwerk (PSTN)

Telefoon 4008 Dials 98041 — PSTN (CUCM)—SIP—CVP—ICM— (ICM is laag)

Overlevingsvermogen is in CUBE niet ingeschakeld

Scenario 1: CVP fout TCL geconfigureerd in de gateway

Configuratie van CVP

In CVP kiesschema de 929292 labelpunten naar CUBE, zoals in de afbeelding weergegeven.

Relevante configuratie in CUBE

CUBE IP-adres: 10.201.198.21

CVVB IP-adres:  10.201.198.26

voice service voip
 no ip address trusted authenticate
 allow-connections sip to sip
 no supplementary-service sip refer
 supplementary-service media-renegotiate
 redirect ip2ip
 signaling forward unconditional
 sip
  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0
  rel1xx disable
  min-se 360 session-expires 360
  header-passing
  asymmetric payload full
  midcall-signaling passthru
  no call service stop

......
application
 service new-call flash:bootstrap.vxml
 !
 service survivability flash:survivability.tcl
  paramspace callfeature med-inact-det enable
  param ccb id:10.201.198.21;loc:CALO;trunks:2
 !
 service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
 !
 service ringtone flash:ringtone.tcl
 !
 service cvperror flash:cvperror.tcl
  paramspace english index 0
  paramspace english language en
  paramspace english location flash
  paramspace english prefix en
.......
dial-peer voice 929292 voip
 description CVP SIP error dial-peer
 service cvperror
 session protocol sipv2
 session target ipv4:10.201.198.26
 session transport tcp
 incoming called-number 9292T
 voice-class sip rel1xx disable
 dtmf-relay rtp-nte h245-signal h245-alphanumeric
 codec g711ulaw
 no vad

Steen van logs

Debugs ingeschakeld in de gateway: debug csip - bericht en debug voip ccapi - inout

--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway


2444742: *May  2 19:30:45.956: //1575870/67C371000000/SIP/Msg/ccsipDisplayMsg:
Received: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK496B721A7
To: <sip:8041@10.201.198.7>;tag=dsa401be35
From: <sip:4008@10.201.198.18>;tag=21E92674-46A
Call-ID: AC32BE77-4D9711E8-91BCBF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1740861696-0000065536-0000000041-0315017482
Contact: <sip:92929292@10.201.198.21>
Cisco-Gucid: 67C37100000100000000002912C6C90A
Session-ID: 00000000000000000000000000000000;remote=232199a11000016357f53ee8f467d218

--- Gateway responds with ACK

Sent: 
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK496B721A7
From: sip:4008@10.201.198.18;tag=21E92674-46A
To: <sip:8041@10.201.198.7>;tag=dsa401be35
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: AC32BE77-4D9711E8-91BCBF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0

-- Gateway forwards the Moved Temporarily message to the original party, in this case the PSTN (CUCM in this lab), 
since the supplementary service is enabled 

Sent: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7d54331a57
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926A0-192
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Contact: sip:92929292@10.201.198.21:5060
Content-Length: 0

--CUCM ACK the message---

Received: 
ACK sip:98041@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7d54331a57
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926A0-192
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence, kpml
Content-Length: 0

--- Gateway received and Invite from PSTN (CUCM) related to the 929292 Error call flow

Received: 

INVITE sip:92929292@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
Supported: timer,resource-priority,replaces
Min-SE:  1800
User-Agent: Cisco-CUCM11.0
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
CSeq: 102 INVITE
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Expires: 180
Allow-Events: presence, kpml
Supported: X-cisco-srtp-fallback,X-cisco-original-called
Call-Info: <sip:10.201.198.18:5065>;method="NOTIFY;Event=telephone-event;Duration=500"
Call-Info: <urn:x-cisco-remotecc:callinfo>;x-cisco-video-traffic-class=VIDEO_UNSPECIFIED
Session-ID: a8540c82a4e44c2eba3f04ba20554953;remote=00000000000000000000000000000000
Cisco-Guid: 1740861696-0000065536-0000000041-0315017482
Session-Expires:  1800
P-Asserted-Identity: <sip:4008@10.201.198.18>
Remote-Party-ID: <sip:4008@10.201.198.18>;party=calling;screen=yes;privacy=off
Contact: <sip:4008@10.201.198.18:5065;transport=tcp>
Max-Forwards: 70
Content-Length: 0

---Match dial-peer 929292

2444797: *May  2 19:30:45.988: //-1/67C371000000/CCAPI/cc_api_call_setup_ind_common:
   Interface=0x4A3A8D84, Call Info(
   Calling Number=sip:4008@10.201.198.18,(Calling Name=)(TON=Unknown, NPI=Unknown, Screening=User, Passed, Presentation=Allowed),
   Called Number=sip:92929292@10.201.198.21:5060(TON=Unknown, NPI=Unknown),
   Calling Translated=FALSE, Subscriber Type Str=Unknown, FinalDestinationFlag=TRUE,
   Incoming Dial-peer=929292, Progress Indication=NULL(0), Calling IE Present=TRUE,
   Source Trkgrp Route Label=, Target Trkgrp Route Label=, CLID Transparent=FALSE), Call Id=1575871

....
....
   
   
 -- Run cvperror.tcl


 2444810: *May  2 19:30:45.992: //1575871/67C371000000/CCAPI/cc_process_call_setup_ind:
   >>>>CCAPI handed cid 1575871 with tag 929292 to app "_ManagedAppProcess_cvperror"

-- Sent Trying and session progress to PSTN
   
Sent: 
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0


2444819: *May  2 19:30:46.000: //1575871/67C371000000/SIP/Msg/ccsipDisplayMsg:
Sent: 
SIP/2.0 183 Session Progress
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
Contact: <sip:92929292@10.201.198.21:5060;transport=tcp>
Server: Cisco-SIPGateway/IOS-12.x
Content-Length: 0

--Sent 200 OK


2444820: *May  2 19:30:46.000: //1575871/67C371000000/SIP/Msg/ccsipDisplayMsg:
Sent: 
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.201.198.18:5065;branch=z9hG4bK7e6f8e5100
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:30:45 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
CSeq: 102 INVITE
Allow: INVITE, OPTIONS, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY, INFO, REGISTER
Allow-Events: telephone-event
Contact: <sip:92929292@10.201.198.21:5060;transport=tcp>
Supported: replaces
Supported: sdp-anat
Server: Cisco-SIPGateway/IOS-12.x
Require: timer
Session-Expires:  1800;refresher=uac
Supported: timer
Content-Type: application/sdp
Content-Disposition: session;handling=required
Content-Length: 250

v=0
o=CiscoSystemsSIP-GW-UserAgent 7410 4830 IN IP4 10.201.198.21
s=SIP Call
c=IN IP4 10.201.198.21
t=0 0
m=audio 16526 RTP/AVP 0 101
c=IN IP4 10.201.198.21
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20


--Received ACK of the 200 OK message

2444823: *May  2 19:30:46.176: //-1/xxxxxxxxxxxx/SIP/Msg/ccsipDisplayMsg:
Received: 
ACK sip:92929292@10.201.198.21:5060;transport=tcp SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK7f4b18782f
From: <sip:4008@10.201.198.18>;tag=88~d18302a7-aed7-454e-85f1-89e6650073de-20554954
To: <sip:98041@10.201.198.21>;tag=21E926C0-EDA
Date: Wed, 02 May 2018 23:13:23 GMT
Call-ID: 67c37100-aea14613-29-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 102 ACK
Allow-Events: presence, kpml
Session-ID: a8540c82a4e44c2eba3f04ba20554953;remote=4c37a896d7446e294d24d877668cab88
Content-Type: application/sdp
Content-Length: 244

v=0
o=CiscoSystemsCCM-SIP 88 1 IN IP4 10.201.198.18
s=SIP Call
c=IN IP4 10.152.234.20
b=TIAS:64000
b=CT:64
b=AS:64
t=0 0
m=audio 23062 RTP/AVP 0 101
a=ptime:20
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15


---Play critical error audio file located in flash on CUBE

Toelichting scenario 1

In dit scenario, aangezien de extra-service stap tijdelijk is ingeschakeld, stuurt de gateway de oproep door naar de initiator, in dit geval het PSTN (in het lab, CUCM).

Scenario 2: CVP-fout TCL geconfigureerd in de gateway en geen aanvullende service

Configuratie van CVP

In CVP kiesschema de 929292 labelpunten naar CUBE, zoals in de afbeelding weergegeven.

Relevante configuratie in CUBE

CUBE IP-adres: 10.201.198.21

CVVB IP-adres:  10.201.198.26

voice service voip
 no ip address trusted authenticate
 allow-connections sip to sip
 no supplementary-service sip moved-temporarily
 no supplementary-service sip refer
 supplementary-service media-renegotiate
 redirect ip2ip
 signaling forward unconditional
 sip
  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0
  rel1xx disable
  min-se 360 session-expires 360
  header-passing
  asymmetric payload full
  midcall-signaling passthru
  no call service stop

......
application
 service new-call flash:bootstrap.vxml
 !
 service survivability flash:survivability.tcl
  paramspace callfeature med-inact-det enable
  param ccb id:10.201.198.21;loc:CALO;trunks:2
 !
 service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
 !
 service ringtone flash:ringtone.tcl
 !
 service cvperror flash:cvperror.tcl
  paramspace english index 0
  paramspace english language en
  paramspace english location flash
  paramspace english prefix en
.......
dial-peer voice 929292 voip
 description CVP SIP error dial-peer
 service cvperror
 session protocol sipv2
 session target ipv4:10.201.198.26
 session transport tcp
 incoming called-number 9292T
 voice-class sip rel1xx disable
 dtmf-relay rtp-nte h245-signal h245-alphanumeric
 codec g711ulaw
 no vad

Steen van logs

Debugs ingeschakeld in de gateway: debug csip - bericht en debug voip ccapi inout.

--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway


2452782: *May  2 21:02:46.120: //1580163/41F099000000/SIP/Msg/ccsipDisplayMsg:
Received: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4980BDED
To: <sip:8041@10.201.198.7>;tag=ds8369f9d4
From: <sip:4008@10.201.198.18>;tag=223D6198-B66
Call-ID: 8678DF8F-4DA411E8-A286BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1106286848-0000065536-0000000042-0315017482
Contact: <sip:92929292@10.201.198.21>
Cisco-Gucid: 41F09900000100000000002A12C6C90A
Session-ID: 00000000000000000000000000000000;remote=2375d4ec100001634a4a6be49573f76d


--- Gateway responds with ACK

Sent: 
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4980BDED
From: sip:4008@10.201.198.18;tag=223D6198-B66
To: <sip:8041@10.201.198.7>;tag=ds8369f9d4
Date: Thu, 03 May 2018 01:02:46 GMT
Call-ID: 8678DF8F-4DA411E8-A286BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0


2452813: *May  2 21:02:46.128: //1580163/41F099000000/CCAPI/cc_api_call_disconnect_done:
   Disposition=0, Interface=0x4A3A8D84, Tag=0x0, Call Id=1580163,
   Call Entry(Disconnect Cause=16, Voice Class Cause Code=0, Retry Count=0)
2452814: *May  2 21:02:46.128: //1580163/41F099000000/CCAPI/cc_api_call_disconnect_done:
   Call Disconnect Event Sent
2452815: *May  2 21:02:46.128: //-1/xxxxxxxxxxxx/CCAPI/cc_free_feature_vsa:
   
2452816: *May  2 21:02:46.128: :cc_free_feature_vsa freeing 4C79B7F8
2452817: *May  2 21:02:46.128: //-1/xxxxxxxxxxxx/CCAPI/cc_free_feature_vsa:
   
2452818: *May  2 21:02:46.128:  vsacount in free is 2
2452819: *May  2 21:02:46.132: //1580162/41F099000000/CCAPI/ccCallDisconnect:
   Cause Value=16, Tag=0x0, Call Entry(Previous Disconnect Cause=0, Disconnect Cause=0)
2452820: *May  2 21:02:46.132: //1580162/41F099000000/CCAPI/ccCallDisconnect:
   Cause Value=16, Call Entry(Responsed=TRUE, Cause Value=16)
2452821: *May  2 21:02:46.132: //-1/xxxxxxxxxxxx/CCAPI/ccMemPoolTDFreeHelper:
   data = 4D0F39A4
2452822: *May  2 21:02:46.132: ccMemPoolTDFreeHelper:mem_mgr_mempool_free: mem_refcnt(4C6D2C38)=0 - mempool cleanup
2452823: *May  2 21:02:46.132: //1580162/41F099000000/SIP/Msg/ccsipDisplayMsg:

--Since Moved Supplementary Service is disabled, Gateway reports an error and the call is disconnected:

Sent: 
SIP/2.0 500 Internal Server Error
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK817c2f8cee
From: <sip:4008@10.201.198.18>;tag=90~d18302a7-aed7-454e-85f1-89e6650073de-20554956
To: <sip:98041@10.201.198.21>;tag=223D61C8-24D1
Date: Thu, 03 May 2018 01:02:46 GMT
Call-ID: 41f09900-aea15ba3-2a-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=16
Content-Length: 0

Toelichting scenario 2

In dit scenario, aangezien de extra-service stap tijdelijk wordt verplaatst in de gateway, wordt 302 tijdelijke bericht niet ondersteund en wordt een interne fout door de gateway aan CVP gemeld.

Scenario 3: CVP-fout TCL geconfigureerd in de VXML-gateway/CVVB en geen aanvullende service

Configuratie van CVP

In CVP kiesschema de 929292-label punten naar CVVB zoals in de afbeelding weergegeven.

Relevante configuratie in CUBE

CUBE IP-adres: 10.201.198.21

CVVB IP-adres:  10.201.198.26

voice service voip
 no ip address trusted authenticate
 allow-connections sip to sip
 no supplementary-service sip moved-temporarily
 no supplementary-service sip refer
 supplementary-service media-renegotiate
 redirect ip2ip
 signaling forward unconditional
 sip
  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0
  rel1xx disable
  min-se 360 session-expires 360
  header-passing
  asymmetric payload full
  midcall-signaling passthru
  no call service stop

......
application
 service new-call flash:bootstrap.vxml
 !
 service survivability flash:survivability.tcl
  paramspace callfeature med-inact-det enable
  param ccb id:10.201.198.21;loc:CALO;trunks:2
 !
 service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
 !
 service ringtone flash:ringtone.tcl
 !
 service cvperror flash:cvperror.tcl
  paramspace english index 0
  paramspace english language en
  paramspace english location flash
  paramspace english prefix en
.......
dial-peer voice 929292 voip
 description CVP SIP error dial-peer
 service cvperror
 session protocol sipv2
 session target ipv4:10.201.198.26
 session transport tcp
 incoming called-number 9292T
 voice-class sip rel1xx disable
 dtmf-relay rtp-nte h245-signal h245-alphanumeric
 codec g711ulaw
 no vad

Steen van logs

Debugs ingeschakeld in de gateway: debug csip - bericht en debug voip ccapi inout.

Same behavior as Scenario 2


Received: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4984515FB
To: <sip:8041@10.201.198.7>;tag=ds8848a4c6
From: <sip:4008@10.201.198.18>;tag=224B0C80-11DA
Call-ID: 9C5C461D-4DA611E8-A550BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1476352256-0000065536-0000000044-0315017482
Contact: <sip:92929292@10.201.198.26>
Cisco-Gucid: 57FF5900000100000000002C12C6C90A
Session-ID: 00000000000000000000000000000000;remote=23837fd11000016394e369cb85ba7fea




Sent: 
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4984515FB
From: sip:4008@10.201.198.18;tag=224B0C80-11DA
To: <sip:8041@10.201.198.7>;tag=ds8848a4c6
Date: Thu, 03 May 2018 01:17:41 GMT
Call-ID: 9C5C461D-4DA611E8-A550BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0

Sent: 


SIP/2.0 500 Internal Server Error
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK83447b6e69
From: <sip:4008@10.201.198.18>;tag=92~d18302a7-aed7-454e-85f1-89e6650073de-20554960
To: <sip:98041@10.201.198.21>;tag=224B0CA0-E15
Date: Thu, 03 May 2018 01:17:41 GMT
Call-ID: 57ff5900-aea15f23-2c-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Reason: Q.850;cause=16
Content-Length: 0

Toelichting scenario 3

Hetzelfde gedrag als Scenarion 2, aangezien de extra-service slop tijdelijk wordt verplaatst in de poort, wordt 302 tijdelijk bericht verplaatst niet ondersteund en wordt een interne fout aan CVP gemeld door de gateway.

Scenario 4: CVP fout TCL geconfigureerd in de VXML gateway/CVVB

Configuratie van CVP

In CVP kiesschema de 929292-label punten naar CVVB zoals in de afbeelding weergegeven.

Relevante configuratie in CUBE

CUBE IP-adres: 10.201.198.21

CVVB IP-adres:  10.201.198.26

voice service voip
 no ip address trusted authenticate
 allow-connections sip to sip
 no supplementary-service sip refer
 supplementary-service media-renegotiate
 redirect ip2ip
 signaling forward unconditional
 sip
  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0
  rel1xx disable
  min-se 360 session-expires 360
  header-passing
  asymmetric payload full
  midcall-signaling passthru
  no call service stop

......
application
 service new-call flash:bootstrap.vxml
 !
 service survivability flash:survivability.tcl
  paramspace callfeature med-inact-det enable
  param ccb id:10.201.198.21;loc:CALO;trunks:2
 !
 service CVPSelfService flash:CVPSelfServiceBootstrap.vxml
 !
 service ringtone flash:ringtone.tcl
 !
 service cvperror flash:cvperror.tcl
  paramspace english index 0
  paramspace english language en
  paramspace english location flash
  paramspace english prefix en
.......
dial-peer voice 929292 voip
 description CVP SIP error dial-peer
 service cvperror
 session protocol sipv2
 session target ipv4:10.201.198.26
 session transport tcp
 incoming called-number 9292T
 voice-class sip rel1xx disable
 dtmf-relay rtp-nte h245-signal h245-alphanumeric
 codec g711ulaw
 no vad

Steen van logs

Debugs ingeschakeld in de gateway: debug csip - bericht en debug voip ccapi - inout

--- After the error is identified on CVP, CVP sends a 302 Moved Temporaily to CUBE/Gateway


2455061: *May  2 21:25:10.904: //1581217/639F4F800000/SIP/Msg/ccsipDisplayMsg:
Received: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4986321AD
To: <sip:8041@10.201.198.7>;tag=ds2cb7f0a
From: <sip:4008@10.201.198.18>;tag=2251E6B8-26BC
Call-ID: A8087055-4DA711E8-A6C0BF90-16BB0040@10.201.198.21
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1671384960-0000065536-0000000046-0315017482
Contact: <sip:92929292@10.201.198.26>
Cisco-Gucid: 639F4F80000100000000002E12C6C90A
Session-ID: 00000000000000000000000000000000;remote=238a5a0d100001633384b476d5df07da

--- Gateway responds with ACK

Sent: 
ACK sip:8041@10.201.198.7:5060 SIP/2.0
Via: SIP/2.0/UDP 10.201.198.21:5060;branch=z9hG4bK4986321AD
From: sip:4008@10.201.198.18;tag=2251E6B8-26BC
To: <sip:8041@10.201.198.7>;tag=ds2cb7f0a
Date: Thu, 03 May 2018 01:25:10 GMT
Call-ID: A8087055-4DA711E8-A6C0BF90-16BB0040@10.201.198.21
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: telephone-event
Content-Length: 0

-- Gateway forward the Moved Temporarily message to the original party, in this case the PSTN (CUCM in this lab),
since the supplementary service is enabled 

Sent: 
SIP/2.0 302 Moved Temporarily
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK852a31e4f8
From: <sip:4008@10.201.198.18>;tag=94~d18302a7-aed7-454e-85f1-89e6650073de-20554964
To: <sip:98041@10.201.198.21>;tag=2251E6D4-23B1
Date: Thu, 03 May 2018 01:25:10 GMT
Call-ID: 639f4f80-aea160e4-2e-12c6c90a@10.201.198.18
CSeq: 101 INVITE
Allow-Events: telephone-event
Server: Cisco-SIPGateway/IOS-12.x
Diversion: <sip:8041@10.201.198.21>;reason=unconditional;counter=1
Contact: sip:92929292@10.201.198.26:5060
Content-Length: 0


---Received ACK form PSTN

Received: 
ACK sip:98041@10.201.198.21:5060 SIP/2.0
Via: SIP/2.0/TCP 10.201.198.18:5065;branch=z9hG4bK852a31e4f8
From: <sip:4008@10.201.198.18>;tag=94~d18302a7-aed7-454e-85f1-89e6650073de-20554964
To: <sip:98041@10.201.198.21>;tag=2251E6D4-23B1
Date: Thu, 03 May 2018 01:07:48 GMT
Call-ID: 639f4f80-aea160e4-2e-12c6c90a@10.201.198.18
User-Agent: Cisco-CUCM11.0
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence, kpml
Content-Length: 0

At this moment the PSTN must sent a SIP Invite to the CVVB, since there is no SIP trunk between the PSTN and the CVVB, 
the critical error message is not played and the call disconnects.

Toelichting scenario 4

In dit scenario, aangezien de extra-service stap tijdelijk is ingeschakeld, stuurt de gateway de oproep door naar de initiator, in dit geval het PSTN (in het lab, CUCM). Aangezien het PSTN echter geen SIP-romp aan de CVVB heeft, speelt de kritische foutmelding niet en de verbinding wordt verbroken.

Concluderend: het foutlabel 929292 moet worden geconfigureerd en gecontroleerd door de gateway. Het is niet relevant wat u hebt ingesteld in het sessiedoel op de 929292 inkomende dial-peer in de Gateway/CUBE, aangezien deze dial-peer niet gebruikt wordt voor een uitgaande gespreksbeen.