Webex Teams calling UCM versus Jabber client

[gfolens]

It is advised to use Webex Teams UCM calling solution in favor of the Hybrid calling solution.

When using this option your Webex Teams client registers on the UCM directly or via MRA (Expressway Edge) as a Jabber CSF, TCT, TAB or BOT device depending on the used device.

I suppose the Webex Teams call client uses the same software as used with the Jabber clients. As such the call quality experience for both audio and video should be the same. Correct?

I got some feedback the Webex Teams client call quality experience is not as good as with the Jabber clients. 

Maybe Webex Teams client is taking more resources?

[Vaijanath Sonvane]

Hi,

The softphone functionality in Webex Teams (Unified CM) is just like Cisco Jabber. Both client share same device type in CUCM so it could be possible that both client share similar code for softphone functionality. As far as I know, both clients has same system requirements and support same audio codecs:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/12_5/Planning_Guide/cjab_b_planning-guide-for-cisco-jabber-125/cjab_b_planning-guide-for-cisco-jabber-125_chapter_010.html#CJAB_RF_S7E65AD2_00 
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/ucmcalling/unified-cm-wbx-teams-deployment-guide.pdf 

If audio quality is fine for Jabber but not for Webex Teams on same PC/Laptop, then you could try upgrading the audio drivers.