Jabber for Windows codec support

[Istvan Balla]

Is there a Jabber release for Windows that supports audio codecs G729 and G729B. Based on Cisco's data sheet, only G729A is supported from the 8k codecs in any Jabber release.

[Jitender Bhandari]

Hi Istvan,

The latest version of jabber 11.8.3 supports below codec .

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/11_8/cjab_b_planning-guide-jabber-118/cjab_b_planning-guide-jabber-118_chapter_01.html#CJAB_RF_S7E65AD2_00

Supported Codecs

Type	Codec	Codec Type	Cisco Jabber for Android	Cisco Jabber for iPhone and iPad	Cisco Jabber for Mac	Cisco Jabber for Windows
Audio	G.711	A-law	Yes Supports normal mode.		Yes	Yes
		µ-law/Mu-law	Yes Supports normal mode.		Yes	Yes
	G.722		Yes		Yes	Yes
	G.722.1	24 kb/s and 32 kb/s	Yes Supports normal mode.		Yes	Yes
	G.729		Does not support Visual Voicemail with G.729; however, you can access voice messages using G.729 and the Call Voicemail feature.		No	No
	G.729a		Yes Minimum requirement for low-bandwidth availability. Only codec that supports low-bandwidth mode. Supports normal mode.		Yes	Yes
	Opus		Yes		Yes	Yes
Video	H.264/AVC		Yes		Yes	Yes
Voicemail	G.711	A-law	Yes		Yes	No
		µ-law / Mu-law (default)	Yes		Yes	No
	GSM 06.10		Yes		Yes	No
	PCM linear		Yes		Yes	No

If users have issues with voice quality when using Cisco Jabber for Android or Cisco Jabber for iPhone and iPad, they can turn low-bandwidth mode on and off in the client settings.

(Rate if it helps)

JB

[Istvan Balla]

Hi Jitender,

Thanks for the response. So if the singalling peer or Jabber client advertises 729 first and 729A second, they will agree in 729A. Right?

In a theoretical situation, where the singalling peer of Jabber client advertises only 729 and nothing else, can the Jabber agree on that and map 729 to 729A on the endpoint where Jabber client is running?

Thank you

[Jitender Bhandari]

Hi Istvan,

Final Codec the end point talks aon is decided on 

1) What all are common coded.

2) What codec are left after region filtration 

For example

Endpoint A in Region A advertises codec g711,g729,g729A

Endpoint B in Region B advertises codec g711,g729,g729A

Region relationship between Region A and Region B is g729 so g711 would be filtered on region itself.

The the coded advertize preference is check so it should select g729 from above example.

Not sure if that answers your question.

(Rate if this helps)

JB

[Istvan Balla]

Hi Jitender,

If for e.g. by wrong design, the only codec between region A and B is g729, endpont B only advertises g729, but endpoint A (Jabber client) doesnt support g729, what will happen?

1. call fails with codec mismatch

2. Jabber maps g729 to g729A

Thank you in advance

[Jitender Bhandari]

Hi Istvan,

It would then require transcoder to make the call work

JB

[Istvan Balla]

Hi Jitender,

So in conclusion, in my example if no transcoder resource is provided, Jabber will not transcode from software g729 to g729a itself and call fails. Right?

Thank you

[Jitender Bhandari · Accepted solution]

Thats correct

JB