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Cisco IAD 2400 fax issue

Hello,

I'm working for a small service provider for 4 moths ago, they have a lot Cisco IAD serie 2400, the use 12.4 OIS and G729 as first code and g711 as second option, for years they customer has a lot of complain (Problems)

Now I'm working in this issue, for I do the follwing in 2 customer:

1. Upgrade to 15.1 for support SG3

   A. Memory upgrade fron 128M to 256 in order to support the new IOS

2. Change the Dial-peer cnfiguration

A. Old Dial-peer

  dial-peer voice 100 voip
translation-profile outgoing outbound
destination-pattern .T
progress_ind setup enable 3
progress_ind progress enable 8
voice-class codec 10
session protocol sipv2
session target ipv4:x.x.x.x
session transport udp
dtmf-relay rtp-nte
fax-relay ecm disable
  no vad

B. New Dial-peer

dial-peer voice 100 voip
translation-profile incoming inbound
translation-profile outgoing outbound
destination-pattern .T
progress_ind setup enable 3
progress_ind progress enable 8
session protocol sipv2
session target ipv4:x.x.x.x
session transport udp
incoming called-number .T
voice-class codec 10 
dtmf-relay rtp-nte
fax-relay ecm disable
fax-relay sg3-to-g3
fax rate 14400
fax nsf 000000
fax protocol t38 version 3 ls-redundancy 1 hs-redundancy 1 fallback pass-through g711ulaw
no vad
!

3. Use only G711 for FAX, G729 don't work fine.

At this point is working fine, but the quetions is, G729 alway have problems with fax?

Please let me know if some body have some idea thanks.

1 REPLY
Highlighted
Cisco Employee

Re: Cisco IAD 2400 fax issue

Hi!

You may have better luck finding assistance with this issue in the IP Telephony forum, as opposed to the Contact Center forum.

Try here:

  https://supportforums.cisco.com/community/netpro/collaboration-voice-video/ip-telephony

Good luck!

-Paulo

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