Hoping someone can help with a Jabber MRA problem. This seems to be affecting mainly IOS (TCT) and Android (BOT) devices and I reckon it's codec related. The problem is we cannot dial any external landline or cell \ mobile numbers through MRA; this happens when the MRA device is connected to WiFi and 4G\cell. The Called party device rings once and then the call automatically disconnects. The call logs report "501 Not Implemented" and "Reason: Q.850;cause=65".
Call route is Jabber MRA device > Expressway-E > Expressway-C > CUCM > SIP Trunk to SIP provider (BT)
Windows CSF devices work fine through MRA using Jabber v11.7.0. Calls to internal numbers from any MRA device are OK (on Wifi and 4G).
CUCM is v220.127.116.1100-52 Expressway Edge and Core are vX8.10.1 Jabber on IOS and Android is latest v11.9.1
I've had a look at the call logs and I can see that the INVITE from the IOS \ Android devices includes an additional audio codec (number "111") compared to the CSF:
INVITE from Expressway to CUCM ==========================
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