Conference calls with Trunk SIP between UCM 8.6 and GW

dsobrinho · ‎03-26-2013

Does anybody knows some bug with this version of UCM 8.6.2 and SIP trunks between Gateways?

We have available free DSP to conference, transcoding and MTP. The media resource group list is okay.

PROBLEM DESCRIPTION:

Problem sporadic of conference call between three or more participants.

Two participants can hear and speak anb the third participant can hear everybody but does not get speak.

BRANCH OFFICE 01:

IOS GW_SP01:c2951-universalk9-mz.SPA.152-4.M1.bin

IOS GW_SP02:c2951-universalk9-mz.SPA.152-4.M1.bin

BRANCH OFFICE 02:

IOS GW_RJ01:c2951-universalk9-mz.SPA.151-4.M2.bin

IOS GW_RJ02:c2951-universalk9-mz.SPA.151-4.M2.bin

BRANCH OFFICE 03 SMALL SITE:

IOS GW_VIX01:c2900-universalk9-mz.SPA.151-4.M2.bin

BRANCH OFFICE 04 SMALL SITE:

IOS GW_MIA01:c2900-universalk9-mz.SPA.152-4.M1.bin

HEADQUARTER DATACENTER RJ:

2x UCS C210M3:

2x UCM version: 8.6.2.20000-2

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SIP TRUNK:

Between UCM to voice GW

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IP PHONES MODEL:

Cisco IP Phone 9971 firmware version: sip9971.9-2-1

CIsco IP Phone 6945 firmware version: SCCP6945.9-2-2-4-ES1

Best regards,

Daniel Sobrinho

Chris Deren · ‎03-26-2013

Daniel,

You need to provide more details such as:

who are the participants, i.e. pstn caller vs. IP phone, which party cannot be heard?

What GW is providing the conferencing, you mention 2 GWs, is the DSP profile defined on the CUBE or another GW? Can you please provide its config?

What if you try to establish conference between 3 IP phones, are you experiencing the same issue?

Did you validate that indeed the expected dsp profile is being used?

Chris