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Reg.Sound Station Duo (PSTN/SIP)

Occasional Visitor

Reg.Sound Station Duo (PSTN/SIP)

Hi There,

I am having some issue witha Soundstation Duo that onlyy allows 3x Conference calls in SIP working mode. I was hoping to utilise the PABX that the unit is connected to and use the PABX facility conference as it oes 8 call connected simultaneously. It seems that the Soundstation does not behave as and "Dumb" analogue phone or send DTMF tone when in use to invoke the Conference facility '*9' to implement the feature on the system. Is there any wat this ohone can be made to do this?


Many thaks in advance.



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Polycom Employee & Community Manager

Re: Reg.Sound Station Duo (PSTN/SIP)

Hello Simon,

welcome to the Polycom Community.

This all completely depends on the PABX you are using it. If you setup the SS Duo for SIP it either uses its internal conference facility or a server hosted one.


Oct 25, 2011 Question: What is the maximum amount of participants in a conference call?

Resolution: Please check => here <=


The above FAQ article explains this all in detail. 


I would suggest you check with the support team that provides your SIP PABX.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
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