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VVX 411, HOLD and OPUS codec

Igor Olhovskiy
Occasional Contributor

VVX 411, HOLD and OPUS codec

Hello!

I'm experiencing an issue with Polycom VVX 411 (UC version 6.3.1.11465 )

 

Schema of the call using OPUS codec
Some other endpoint -> Asterisk (TLS/SRTP) -> Polycom VVX

Call establishes correctly, but when pressing HOLD on Polycom, on unHOLD I'm getting one-way audio on the phone. This means what I'm saying on some other endpoint can't be heard on Polycom, but everything I'm saying on Polycom is heard by Asterisk/another endpoint. Recording made on Asterisk is shown both streams are reaching Asterisk and (S)RTP is sent towards Polycom.

 

But this scheme is working another way round.

Polycom VVX -> (TLS/SRTP) Asterisk -> Some other endpoint. If Polycom phone is call originator, hold/unhold works as expected.

 

On investigating this scenario, I've found, that in the first case, Polycom phone on unhold change RTP payload of Opus from initial 107 sent by Asterisk originally (and accepted in 200 OK by Polycom with same 107 payload) to 121, and Asterisk also changes payload to 121 and seems Polycom is not accepting it anymore.

 

This problem is not replicated with using PCMA/PCMU codecs.
I've attached 2 pcap's with this case. owa stands for one-way-audio, 2wa - for two-way-audio.

 

3 REPLIES 3
SteffenBaierUK
Polycom Employee & Community Manager

Re: VVX 411, HOLD and OPUS codec

Hello @Igor Olhovskiy ,

Welcome back to the Poly community.

Some or a couple of your old post(s) or reply(s) to them => here <= are still open/pending as you have not marked these as "Accept as a solution" or at least provide some form of feedback or answer.

If they are in this state nobody finding them via a community search will know if an answer or advice provided was useful and has maybe helped you.

Could you therefore kindly go over them and mark or answer as appropriate?

If they are marked as "Accept as a solution" other users can find these easier and it helps them to utilise the community more efficiently. Please do not simply mark them without any type of feedback.

 

For your new issue, we would need to know if this ever worked and/or if this is a new issue. We would also need to see your backup/ configuration.

 

This sounds like a support issue and therefore cannot really be dealt with by the volunteers in this community.

 

Other volunteers are welcome to comment but if this all fails we would need to see this in support.


In order to raise a support ticket, you need to work with your Poly reseller as they may need to do this for you.

End Customers are usually unable to open a ticket directly with Poly support. Available End User Poly services offerings are detailed here

If this is some sort of an Internet discounter providing your MAC address or your Poly devices serial will enable us to look up who would be able to support you. This may not be who you purchased the Poly device from.

If the unit is no longer within the warranty please be prepared to Pay Per Incident / PPI. This is all outlined in detail here


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

Best Regards

Steffen Baier

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The title Polycom 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. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.

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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
Message 2 of 4
Igor Olhovskiy
Occasional Contributor

Re: VVX 411, HOLD and OPUS codec

Steffen,

It's a new issue and this setup is also totally new.

For config - sure, nothing secret here (unless passwords)

 

I'm suspecting, that this is a limitation of the phone itself, having only 1 OPUS stream. Means when the phone on unhold changing payload dynamically, it counts re-negotiation as adding a second stream or so. But it's guessing.

 

SteffenBaierUK
Polycom Employee & Community Manager

Re: VVX 411, HOLD and OPUS codec

Hello @Igor Olhovskiy ,

 

without looking at this in our support organisation I am unable to comment.

 

Feel free to follow as advised if no other volunteers have any ideas.

 

Best regards

 

Steffen Baier

----------------
The title Polycom 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. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.

----------------

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
Message 4 of 4