Asterisk gtalk codec G723

Asterisk Asterisk Support
1

Hello

I want to use asterisk to connect sip calls to google talk. I can use it very well with ilbs and ulaw codecs. but when I force to use G723, it doesnt work.
when I send a G723 call to google, the machine which is running google yalk client experience a crash on google talk, and gtalk terminates.

I’m using the latest asterisk stable version (Asterisk 1.4.15) , with G723 codec installed.
also using the latest google talk software from google.

any one has a solution ?

thanks

Reza Toghraee

2

What G723 software version are you using ? The only Legal G723 codec license for asterisk is a trans coder card. If you are using something illegal what do you expect ?

3

David

I’m using the legal g723 codec for asterisk. the codec software.
when I try to send the call with G723 to goolge, google talk crashes.
this is my scenario :

Cisco GW (AS5350) --SIP–(G711-G729-G723)—> Asterisk —> GTalk

when I use G711 between AS5350 and Asterisk and using iLbc between Asterisk and Gtalk , it works fine.

BUT not working in following cases :

  1. Cisco -> Asterisk G723 and Asterisk -> Gtalk G723
  2. Cisco -> Asterisk G711 and Asterisk -> Gtalk G723

I tried all version of G723 on AS5350.

here is my codec versions :

label2*CLI> core show codecs
Disclaimer: this command is for informational purposes only.
It does not indicate anything about your configuration.
INT BINARY HEX TYPE NAME DESC

      1 (1 <<  0)      (0x1)  audio       g723   (G.723.1)
      2 (1 <<  1)      (0x2)  audio        gsm   (GSM)
      4 (1 <<  2)      (0x4)  audio       ulaw   (G.711 u-law)
      8 (1 <<  3)      (0x8)  audio       alaw   (G.711 A-law)
     16 (1 <<  4)     (0x10)  audio   g726aal2   (G.726 AAL2)
     32 (1 <<  5)     (0x20)  audio      adpcm   (ADPCM)
     64 (1 <<  6)     (0x40)  audio       slin   (16 bit Signed Linear PCM)
    128 (1 <<  7)     (0x80)  audio      lpc10   (LPC10)
    256 (1 <<  8)    (0x100)  audio       g729   (G.729A)

label2*CLI> core show translation
Translation times between formats (in milliseconds) for one second of data
Source Format (Rows) Destination Format (Columns)

      g723 gsm ulaw alaw g726aal2 adpcm slin lpc10 g729 speex ilbc g726 g722
 g723    -   6    2    2        4     2    1     7   24     -   33    5    -
  gsm   25   -    3    3        5     3    2     8   25     -   34    6    -
 ulaw   24   6    -    1        4     2    1     7   24     -   33    5    -
 alaw   24   6    1    -        4     2    1     7   24     -   33    5    -

g726aal2 26 8 4 4 - 4 3 9 26 - 35 1 -
adpcm 24 6 2 2 4 - 1 7 24 - 33 5 -
slin 23 5 1 1 3 1 - 6 23 - 32 4 -
lpc10 28 10 6 6 8 6 5 - 28 - 37 9 -
g729 28 10 6 6 8 6 5 11 - - 37 9 -
speex - - - - - - - - - - - - -
ilbc 28 10 6 6 8 6 5 11 28 - - 9 -
g726 26 8 4 4 1 4 3 9 26 - 35 - -
g722 - - - - - - - - - - - - -

any advise ?

Regards
Reza Toghraee