Fax from ATA to ATA using H323

Unanswered Question
Jul 22nd, 2008

Hello!

I have an H323 gateway and want to set it up where I can fax from one fax machine connected to an ATA to another fax machine connected to a separate ATA. Can this be done and if so, what do I need to add or remove from my configuration? I have attached the configuration of the ATAs. I know its missing from below but I do have the h323 interface configuration on the gateway.

voice service voip

fax protocol t38 ls-redundancy 2 hs-redundancy 0 fallback none

h323

no h225 timeout keepalive

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g729r8

!

!

!

voice class h323 1

h225 timeout tcp establish 3

!

!

application

global

service alternate default

!

!

!

dial-peer voice 10000 voip

destination-pattern 9295

progress_ind setup enable 3

modem passthrough nse codec g711ulaw

voice-class codec 1

session target ipv4:172.24.86.21

incoming called-number 9295

dtmf-relay h245-alphanumeric

fax rate disable

no vad

!

dial-peer voice 15172 voip

description ** Inbound DIDs to ATA **

destination-pattern 5172

progress_ind setup enable 3

modem passthrough nse codec g711ulaw

session target ipv4:172.24.86.27

incoming called-number 5172

dtmf-relay h245-alphanumeric

fax rate disable

no vad

!

!

no dial-peer outbound status-check pots

gateway

timer receive-rtp 1200

!

!

I have this problem too.
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Michael Hanes Mon, 07/28/2008 - 21:12

I checked your configurations and they are fine. Assuming that you have call routing configured correctly and you match the correct dial-peers on the H.323 gateway you should be able to send and receive fax calls between these three devices.

Regards,

David

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