Elastix 1.5 don't received external FAX

DMTG

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#1
Hello,

A few days installed elastix and still can not get to work to receive faxes (external) through a SIP server that supports T.38.
Where elastix attempts to receive a fax is the following message "Dropping incompatible voice frame on SIP / +351 xxxxxxxx-format 09f741c0 of sLine since our native format has changed to 0x4 (ulaw), but I can send faxes without any problems and also I receive internal fax.
Already setup nvfax, T38udpl.
Can you help me?

Thanks,
Portuguese from Madeira Island
 

dicko

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#2
I don't believe that Asterisk 1.4 (elastix) supports T38 natively, it will pass it through to a T38 fax machine/ata. as you have set it up.

Does that help?
 

DMTG

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#3
dicko said:
I don't believe that Asterisk 1.4 (elastix) supports T38 natively, it will pass it through to a T38 fax machine/ata. as you have set it up.

Does that help?
In this server
https://94.124.57.17/
login: demoadmin
pass: palosanto

I test my configuracion SIP and i can receive external fax in elastix system fax.
 

dicko

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#4
given a decent network connection and a decent VOIP provider, using ulaw/alaw, In my experience faxes work 98%+ if you insist on T38 you will need hardware (fax or an ata connected to a traditional fax machine) that supports T38. (normally in the absense of T38 the fax will be negotiated back to g711)
 

DMTG

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#5
dicko said:
given a decent network connection and a decent VOIP provider, using ulaw/alaw, In my experience faxes work 98%+ if you insist on T38 you will need hardware (fax or an ata connected to a traditional fax machine) that supports T38. (normally in the absense of T38 the fax will be negotiated back to g711)

Thanks for your help!
 

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