How to configure Fax on VG 224 running SCCP.

Unanswered Question
Jun 7th, 2010

Hi,

How to configure Fax on VG 224 running SCCP.

I am using the Version 12.4(24) IOS.

Does the below commands sufficient to confiure fax.

1. enable

2. configure terminal

3. voice service voip

4. fax protocol t38 nse force

5. fax protocol cisco

6. fax-relay sg3-to-g3

7. end

TIA

Sandesh Rao

I have this problem too.
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William Bell Mon, 06/07/2010 - 04:28

This is close.  If you want to fallback to cisco relay in the event NSE based T38 fails, then you may want to use this instead:

voice service voip
fax protocol t38 nse ls-redundancy 0 hs-redundancy 0 fallback cisco

This command:  "fax protocol cisco" means that you want cisco fax relay as the primary fax protocol, which you do not.  The above will set Cisco fax relay as a fallback/secondary option.

You can set the low speed and high speed redundancy levels to the appropriate values for your environment.

The "fax-relay sg3-to-g3" is fine.

It should be noted that since you are using NSE-based T.38 on the VG-224 that any other gateways which will participate in a fax-relay transmission with the VG-224 must support NSE-based T.38 or the call may fail (or fall back to cisco fax relay).

Here is the SCCP config guide for fax:

http://www.cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fxsrelay.html

Based on your listing of commans, I suspect you have the above doc.

Here is an excellent fax/modem document that you may want to keep in your back pocket:

http://www.cisco.com/en/US/docs/ios/voice/fax/configuration/guide/12_4t/vf_12_4t_book.html

HTH.


Regards,
Bill

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Posted June 7, 2010 at 3:40 AM
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