Poly CCX Opus payload type fixed at 121

[KevinIQ]

(note: this site doesn't recognise the device's serial #)

Hi. We've hit an issue with a customer who is trying to use the Poly CCX400 with our Freeswitch PBX.

When using Opus, the payload type appears to be fixed at 121, whereas Freeswitch rightly uses dynamic payload type for Opus. As a result of the mismatch, the audio fails, as Freeswitch is expecting the dynamically assigned payload type, and attempts to fall back to a default codec.

Steps to reproduce...

1. Remove all codecs from CCX phone's priority list, except for Opus.

2. Make a call to the CCX phone, from another SIP client via Freeswitch.

3. Answer the call on the CCX phone.

4. Call connects with silence, and Freeswitch log reports "alternate payload received (received 121)" and "Could not change to payload type 121".

Thanks in anticipation of a fix or workaround that we can set in the phone's config.

[SteffenBaierUK]

Hello @KevinIQ ,

Welcome to the HP community.

Unfortunately, your post does not contain the currently used Software version for the HP Poly product you use. 

This is important, especially in the future, when someone finds this post in days, months, or years.

Please do not simply edit the original post, but reply with the versions.

In the FAQ or the Read 1st section, we remind users why this is important.

For your actual issue, you can only manually set the payload to my knowledge:

<change voice.audioProfile.Opus.payloadType="102" />

Any change to this or a feature request would need to come via an official ticket.

If no other volunteers reply, I suggest you contact our Support organization in your region. Details are in my Signature.

Best regards

Steffen Baier

[KevinIQ]

Thanks for the quick response, Steffen.

Firmware version is 9.1.1.0258

[Nick8718]

Hi Steffen,

Apologies - I couldn't reply to the message I'd just posted as it was locked.  Replying here:  I'm Nick - Kevin's customer and not as knowledgeable as he - or you - are.  Since we had this problem with the CCX 400 running the software version as detailed by Kevin I've also had the issue on an e100 running 8.2.3.0844.  Same issue: audio heard in one direction only.  Many thanks for any help you can offer.