Conference between IP phone Cisco

[Jean Lofrano]

Hi Voice Team,

I have a environment with SIP phones and Cisco "SCCP" phones registered in a CUCM 8.5.

But, the conference is working just for sip phones...

The conference bridge configuration was attached...

What is the problem? 

thanks.

[Chris Deren]

Are all the phones in the same Location and Device Pool or are the SCCP phones in different DP and hence trying to negotiate different codec? Keep in mind software conference bridge can only do G711 codec.

Do you require Truster Relay Point as you have it set? Have you tried removing it?

HTH,

Chris

[Jean Lofrano]

Hi Chris,

All ip phones are in the same location and Device pool.

What is truster relay point? Where Can I to remove it?

thanks

[Jean Lofrano]

I need to configure the dspfarm, sccp ccm group, voice card.. on voice gateway?

[Chris Deren · Accepted solution]

You do not need DSPFARM if your desire it to use CUCM as the conference bridge, however if you have enough PVDMs on the GW it is always recommended to use hardware conference bridge. 

As to Truster Relay Point it is set on your conference bridge, see the last field on your screen shot.

Chris

[Jean Lofrano]

Ok I´m going to disable the option "truster relay" and to test...

[Jean Lofrano]

Hi Chris,

Thanks!!! The conference is working right now.

bye.