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Our company has bought 12 of ISR 4321 and 7 of 4331 routers like UC bundles with CUBE-10 licenses (2x FL-CUBEE-5), and NIM-1MFT-T1/E1 to NIM-4MFT-T1/E1 Multiflex Trunk Voice/Clear-channel Data T1/E1 modules for connection to ISDN trunks about 18 mont...
Hi,yesterday I encountered the same issue on Cisco ISR4321/K9 router, serial SN: FDO2204A3MB, with NIM-1MFT-T1/E1 module serial SN: FOC21502UYX and PVDM4-32 DSP module serial SN: FOC22012WEL.The device is configured as a voice gateway, ISDN to Cisco ...
ISR4321/K9 router with NIM-1MFT-T1/E1 module, isr4300-universalk9.16.06.02.SPA.bin software,configured for Euro ISDN connection to PSTN provider, did not connect to PSTN after power outage.Investigation shows, that the following commands are missing ...
Does anybody know why Duplicating RTP Streams (rfc7198) is used for voice RTP from Cisco IP Communicator on my PC? Is it controlled by any Cisco or Windows (Lync 2013) setting? I found (using Wireshark) that the Duplicating RTP Streams are used from ...
Can you help me with CallRecording from Cisco IP Communicator?I cannot record voice traffic going through CIPC configured with SCCP protocol.We are using IP phone based recording, codec G.711 ulaw.The CIPC is configured according to https://supportfo...
The issue is solved now with TAC help, ticket SR 685130611.
Issue was caused using incorrect codec complexity:
...
voice-card 0/1
codec complexity medium
controller E1 0/1/0
clock source line primary
pri-group timeslots 1-31 ...
And during router r...
Hi all,further analysis of the TCP dumps (output from Wireshark) during incoming phone call to my CIPC (and recorded to call recorder) shows, that my CIPC (or my PC) does not use "Duplicating RTP Streams (rfc7198)", my PC only sends all UDP packets 2...
Thank you James,I have tested the CIPC version 8.6.6, configured for CallRecording - IP Phone Based Recording, configured with SCCP protocol, it worked OK. Probably the CUCM version 10.5.2.11900-3 needs it.Many thanks for your help!
