Having Fax issues at present with an ATA, H323 Gateway running Call Manager 6.1.2.
Calls are working fine and coming in over BRI ports. Faxes can be sent outbound from site and also across the LAN and WAN.
When calls are made inbound to the ATA - a Q931 debug shows the call as alerting but the ATA does not pick up or connect the call to the Fax machine.
some config is shown below:
description *** Voice Interface ***
no ip address
isdn switch-type basic-net3
isdn incoming-voice voice
isdn static-tei 0
dial-peer voice 91 pots
translation-profile outgoing ISDN_FIX
progress_ind setup enable 3
progress_ind alert enable 8
progress_ind connect enable 8
progress_ind disconnect enable 8
incoming called-number .
fax rate disable
dial-peer voice 1 voip
modem passthrough nse codec g711ulaw
voice-class codec 1
voice-class h323 1
session target ipv4:X.X.X.X
fax-relay ecm disable
fax rate disable
One thing I think it may be is cabling but calls come in over the LAN and WAN...??!!
Any help, greatly appreciated.
This more or less confirms what I was expecting. If you would like to change the phone load of a single ATA you can do it in the phone configuration page, without interrupting the cluster. Just put the new load in the TFTP server and reference in the text box on the IP phone page.
You can reference certain route patterns as 'OnNet' or 'OffNet', but this is going to be more disruptive as you need to reset the associated gateways and such.
It sounds like the fax machine doesn't like the external cadence. If you're using the same cable, it's not cabling. You can try adding more/less cable, as there are other issues with too much / not enough resistance on the wire.
Try calling the fax machine from an internal number and see if it picks up. If it does, it could relate to the cadence. If it doesn't, it could be voltage.