UC520 Fax to email

Unanswered Question
Oct 14th, 2008


I am trying to configure a UC520 to email incoming faxes to users. I have an analogue fax machine that is currently connected to one of the FXS ports and operates as a normal fax. What do I need to configure to make this work, any pointers in the right direction would be greatfully appreciated



I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
bwilmoth Mon, 10/20/2008 - 07:01

The configuration can be done by using fax passthrough instead of fax relay.On detection of a fax tone on an established VoIP call, the gateways switch into fax pass-through mode by suspending the voice codec and loading the pass-through parameters for the duration of the fax session. This process, called upspeeding, changes the bandwidth needed for the call to the equivalent of G.711.

ianwarb Tue, 10/21/2008 - 03:10

Many thanks

One of my problems that I haven't made clear is that I am using a SIP trunk for IPT connectivity and find that sometimes fax works and yet other times I get tx/rx errors. Do you know of anything I should be aware of delivering faxes over the SIP trunk



This Discussion