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irfanjee
Posts: 2
Registered: ‎08-30-2009

FAX not working with SPA8000 by using SIP Phone

i am facing a problem. I have SIP PHONE via GPON through CISCO SPA8000 .Codec when G711 then fax not successful, but when Codec T38 then ok. But how i can fix Codec T38 . codec G711 -64K-ALAW is not working. pl solve my problem

thanks
ahmad
dubai uae
irfanmoez@hotmail.com
blueiced
Posts: 180
Registered: ‎06-18-2009

Re: FAX not working with SPA8000 by using SIP Phone

Does your fax machine support T38? only Fax machines that supports a T38 can be use to SPA3102.

 

CalvinHanson
Posts: 3
Registered: ‎09-05-2009

Re: FAX not working with SPA8000 by using SIP Phone

i am facing a problem. I have SIP  PHONE via GPON through CISCO SPA8000 .Codec when G711 then fax not successful, but when Codec T38 then ok. But how i can fix Codec T38 . codec G711 -64K-ALAW is not working. pl solve my problem

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The SIP to MGCP T.38 Fax Fallback to Pass-Through and Voice feature supported on the Cisco PGW 2200 - will allow a FAX call in pass-through mode. 

wild_qwerty
Posts: 5
Registered: ‎01-24-2010

Re: FAX not working with SPA8000 by using SIP Phone

I'm not sure on your VoIP provider, but with 2talk in New Zealand we have to use the G729a codec for faxes, but we can use G711a codec for voice calls. check to see what your VoIP provider recomends for a codec when faxing.