Jabber SDK Garbled Audio

[cistera.com]

Hi,

We're currently using Jabber SDK to create a web-based softphone to be able to coach existing jabber calls.

In our tests, any call initiated by a web client to another cisco device or to a PSTN produces garbled audio.

Here is the test case and the results:

Source	Source Application	Destination	Destination Device	Source->Dest Audio Status (Garbled or not)	Dest->Source Audio Status
ISGRP18 (172.22.29.120)	Jabber Desktop Client	ISGRP08 (172.22.29.74)	Jabber Desktop Client	Clear	Clear
ISGRP18 (172.22.29.120)	Jabber Desktop Client	ISGRP08 (172.22.29.74)	IP Communicator	Clear	Clear
ISGRP18 (172.22.29.120)	Jabber Desktop Client	ISGRP08 (172.22.29.74)	Jabber Web Client (Browser)	Clear	Garbled
ISGRP18 (172.22.29.120)	Jabber Desktop Client	External number	PSTN	Clear	Clear
ISGRP18 (172.22.29.120)	Jabber Web Client (Browser)	ISGRP08 (172.22.29.74)	Jabber Desktop Client	Garbled	Clear
ISGRP18 (172.22.29.120)	Jabber Web Client (Browser)	ISGRP08 (172.22.29.74)	IP Communicator	Garbled	Clear
ISGRP18 (172.22.29.120)	Jabber Web Client (Browser)	ISGRP08 (172.22.29.74)	Jabber Web Client (Browser)	Garbled	Garbled
ISGRP18 (172.22.29.120)	Jabber Web Client (Browser)	External number	PSTN	Garbled	Clear

What can cause this?

Here is the link of the actual recording played through from the packet capture:

https://community.cisco.com/t5/video/gallerypage/video-id/6308337062112

Thank you

[Alex Stevenson]

Hi @cistera.com,

I would look through the Cisco Bug Search Tool and see if this is a know bug, perhaps with a known workaround.

https://bst.cloudapps.cisco.com/bugsearch

Best of luck!

[cistera.com]

Actually this issue seems to be caused by Windows RDP. Performing the same test locally had no issues, although, from the same remote workstation Jabber calls were 100% clear as well. Not sure what MS is doing with their "virtual" microphones, but it seems to be in their court.