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New Member

Fax on SIP-TRUNK

Hello,

I am facing issues with FAX connecting to ATA 186 they are not able to send fax nor they are able to receive, but if i am connecting anolog phone the call is perfect for in and out ,

Can anybody help me to know what are the standards commnds to put when the VG is in a SIP Trunk.

5 REPLIES
Hall of Fame Super Silver

SIP-TRUNK

ATA186 do not support protocol based T38 which is what most likely your provider is using. Your options are:

1. Get device that supports T.38, i.e. ATA187

2. Check wit provider to see if they can use fax passthrough and reconfigure your GW to use it.

HTH,

Chris

New Member

Re: SIP-TRUNK

Thanks Chris,

Can u tell me the commands to applied on my VG  once i make agree my provider to configure fax passthrough on his end.

Hall of Fame Super Silver

Re: SIP-TRUNK

"modem passthrough nse codec g711ulaw"

Either under dial-peer or voice service voip global settings.

HTH, please rate all useful posts!

Chris

New Member

Re: SIP-TRUNK

Thanks Chris,

Can you guide me for debugs commands to be confirmed that fax traffic is passng through my VG on SIP TRUNK to my provider.

Thanks

Hall of Fame Super Silver

Re: SIP-TRUNK

debug ccsip messages

show call active voice brief

HTH, please rate all useful posts!

Chris

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