[asterisk-ss7] g723 or g729 on ss7 link

Kai Militzer km at westend.com
Mon Mar 27 07:18:55 MST 2006


> Is it possible to set codecs on ss7 link?

No. E1s channels (which chan_ss7 uses as voice channels) can only use 
G711 alaw.

> Or receiving call with g723 or g729 and forward the call to pstn via the ss7
> link.

You can do transcoding on the asterisk machine that you use as SS7 
Gateway. This means you get the calls delivered via SIP with G723 and 
send them out to SS7 with G711. Note that you need more processingpower 
for this then if you do no transcoding.

Best regards

Kai Militzer                 WESTEND GmbH  |  Internet-Business-Provider
Technik                      CISCO Systems Partner - Authorized Reseller
                              Lütticher Straße 10      Tel 0241/701333-14
km at westend.com               D-52064 Aachen              Fax 0241/911879

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