I have Polycom Soundstation duo integrated with CUCM 8.0(3) as third party SIP device (advance). Problem is when i create Ad hoc conference call from Polycom soundstation only 2 participants join the conference, how can i increase number of participants or is there any limitations on CUCM for Third party SIP Device?
From my normal 6921 IP phone I can add upto 16 participants.
Does the polycom endpoint have a built-in-bridge for conferencing? Does that have any limitations?
The reason you are able to conference 16 ppl for a 6921 phone is because it's using the CUCM software CFB fo this purpose and not its own BIB. You should check if the polycom also invokes the CUCM CFB or if it's trying to do this on its own resources.
Ok i have tried this as you suggested and i see CFB graphs going up as i initiate conference from 6921 but as i initiate conference from polycom soundstation there is not activity in graph and it remains at 0 which confirms that Polycom soundstation is not using CFB.
I need to know how can i enforce it to use CFB and not to use its local resource?
We should make sure if the behavior we are observing is expected. So, please configure an Xlite or any other 3rd party sip phone and make a conference, and check if the conference bridge is invoked. If not, I think we are hitting a limitation.
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...