About Istvan Balla

Istvan Balla · 04-27-2017

is there a way to configure ISR4300 SIP gw that has 1 ISDN PRI E1 to receive the called number en-bloc ( ENBLOC ) from PSTN provider instead of overlapping 1by1? must provider agree in that if my configuration is ENBLOC, they send whole DNIS in SETUP...

Istvan Balla · 04-15-2017

Is there a site of IETF or ITU where rtpmap values in SDP for all audio codecs are listed? I saw many sites of both organizations with examples in rtpmap, but those were not a complete list. Are both G729 and G729A indicated 18 with annexb=no in rtpm...

Istvan Balla · 04-14-2017

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.

Istvan Balla · 04-16-2017

Thanks for the answers. Signalling peers: 8811 SIP phone--CUCM--isr4331 pstn gw Media peers: 8811 SIP phone -- isr4331 pstn gw In debug voip ccapi inout I see on ISR 4331 that call codec for media is 0x4 (g729) instead of 0x8 (g729A). I set voice ca...

Istvan Balla · 04-14-2017

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

Istvan Balla · 04-14-2017

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 g...

Istvan Balla · 04-14-2017

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 no...

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receive ISDN call en-bloc

codec values in SDP

Jabber for Windows codec support

Thanks for the answers.

Hi Jitender,

Hi Jitender,

Hi Jitender,