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SRST Parallel hunt group fails if first member missing Call flow: Provider --- E1 --- SRST --- IP phones
IOS: 15.7(3)M3 Platform: 29XX
No Workarounds
++ Customer requirement is that when the call hits the pilot number, it should first hit the outgoing dial-peer as the one pointing towards CUCM and then the virtual dial-peer created for hunt-pilot. This is achieved by using the command "dial-peer hunt 2". ++ Issue is reproduced in TAC lab. Following are the configuration and the logs: Call flow: Router --- T1 --- SRST router --- Ip phones Incoming dial-peer: dial-peer voice 100 pots incoming called-number 100$ direct-inward-dial Outgoing dial-peer pointing towards CUCM: dial-peer voice 1994 voip tone ringback alert-no-PI description *** FIRST CCM NODE *** destination-pattern 1.. progress_ind setup enable 3 progress_ind alert enable 8 session target ipv4:10.10.10.10 voice-class codec 1 voice-class h323 1 dtmf-relay h245-alphanumeric fax rate disable ip qos dscp cs3 signaling no vad Hunt group configured: voice hunt-group 1 parallel no forward local-calls to-final list 9972,1020 timeout 600 pilot 100 description ECP sales preference 9 secondary 9 Phones registered have DN 9971 and 1020. But in the list we have mentioned 9972 and 1020. Ideally when the call hits the hunt group pilot, the call should be extended to number 1020. Voice register Pool configured: voice register pool 1 id network 10.106.108.0 mask 255.255.255.0 preference 10 dtmf-relay rtp-nte cisco-rtp sip-notify codec g711ulaw voice register pool 2 id network 10.106.78.0 mask 255.255.255.0 preference 10 dtmf-relay rtp-nte cisco-rtp sip-notify codec g711ulaw Troubleshooting done: ++ Incoming Setup received: 001701: Jan 4 14:57:27.614: ISDN Se0/0/0:23 Q931: RX <- SETUP pd = 8 callref = 0x0088 Sending Complete Bearer Capability i = 0x8090A2 Standard = CCITT Transfer Capability = Speech Transfer Mode = Circuit Transfer Rate = 64 kbit/s Channel ID i = 0xA98381 Exclusive, Channel 1 Display i = '7800' Calling Party Number i = 0x0081, '7800' Plan:Unknown, Type:Unknown Called Party Number i = 0x80, '100' Plan:Unknown, Type:Unknown ++ Incoming dial-peer 100 and outgoing dial-peer 1994 gets hit and the call is extended towards CUCM. Since CUCM is not reachable, we see following message: 001741: Jan 4 14:57:27.626: %VOICE_IEC-3-GW: H323: Internal Error (SETUP send sock fail): IEC=1.1.186.5.83.0 on callID 458 GUID=1F799E330F5711E9800A2C542DBB3078 ++ Call then hits virtual dial-peer for hunt pilot and extends the call towards 9972 and 1020 and used dial-peer 1995 pointing towards CUCM: 001784: Jan 4 14:57:27.630: //457/1F799E33800A/CCAPI/cc_api_display_ie_subfields: ccCallSetupRequest: cisco-username= ----- ccCallInfo IE subfields ----- cisco-ani=7800 cisco-anitype=0 cisco-aniplan=0 cisco-anipi=0 cisco-anisi=1 dest=9972 cisco-desttype=0 cisco-destplan=0 cisco-rdie=73 cisco-rdn= cisco-rdntype=0 cisco-rdnplan=0 cisco-rdnpi=0 cisco-rdnsi=0 cisco-redirectreason=15 fwd_final_type =0 final_redirectNumber = hunt_group_timeout =0 001785: Jan 4 14:57:27.630: //457/1F799E33800A/CCAPI/ccIFCallSetupRequestPrivate: Interface=0x40E646A8, Interface Type=1, Destination=, Mode=0x0, Call Params(Calling Number=7800,(Calling Name=7800)(TON=Unknown, NPI=Unknown, Screening=User, Passed, Presentation=Allowed), Called Number=9972(TON=Unknown, NPI=Unknown), Calling Translated=FALSE, Subscriber Type Str=RegularLine, FinalDestinationFlag=TRUE, Outgoing Dial-peer=1995 001812: Jan 4 14:57:27.634: //457/1F799E33800A/CCAPI/cc_api_display_ie_subfields: ccCallSetupRequest: cisco-username= ----- ccCallInfo IE subfields ----- cisco-ani=7800 cisco-anitype=0 cisco-aniplan=0 cisco-anipi=0 cisco-anisi=1 dest=1020 cisco-desttype=0 cisco-destplan=0 cisco-rdie=73 cisco-rdn= cisco-rdntype=0 cisco-rdnplan=0 cisco-rdnpi=0 cisco-rdnsi=0 cisco-redirectreason=15 fwd_final_type =0 final_redirectNumber = hunt_group_timeout =0 001813: Jan 4 14:57:27.634: //457/1F799E33800A/CCAPI/ccIFCallSetupRequestPrivate: Interface=0x40E646A8, Interface Type=1, Destination=, Mode=0x0, Call Params(Calling Number=7800,(Calling Name=7800)(TON=Unknown, NPI=Unknown, Screening=User, Passed, Presentation=Allowed), Called Number=1020(TON=Unknown, NPI=Unknown), Calling Translated=FALSE, Subscriber Type Str=RegularLine, FinalDestinationFlag=TRUE, Outgoing Dial-peer=1994 And we see following error: 001845: Jan 4 14:57:27.638: %VOICE_IEC-3-GW: H323: Internal Error (SETUP send sock fail): IEC=1.1.186.5.83.0 on callID 459 GUID=1F7C0ED30F5711E9820384C2245ABF8D ++ Post that the router does not do dial-peer hunt and not send the call to virtual dial-peer for 1020 and call gets disconnected: 001879: Jan 4 14:57:27.654: ISDN Se0/0/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x8088 Cause i = 0x80A6 - Network out of order