ATA 190 with FAX pass throgh

[Suchi]

HI 

I have setup faxes with ATA , below is the call flow

ATA--UCM--SIP TRUNK--CUBE---SIP TRUNK---ITSP

my ITSP doesn't support t.38 , so i configured fax pass throgh, but most of the time faxes fail, any suggestion?

fax rate disable
fax nsf 000000
fax protocol pass-through g711alaw

[Mohammed al Baqari]

remove fax nsf command and test.

Also, share debug ccsip mess for failed fax call

[Suchi]

HI Mohammed,

Thanks for the suggestion & what is the impact if i use fax  protocol none?

[Mohammed al Baqari]

No fax pass-through is attempted which you don't want. You need it to pass through