FAXing out over PRI

[tato386]

I plan to connect a FAX to an FXS port on a UC520 that uses PRI for PSTN access. Our current telcom provider thinks that FAXes over PRI will not work too well or maybe not at all. Any truth to this? What about inbound? Any problem there?

Thanks,

Diego

[Kenneth Mohammed]

I have several customers who fax over a PRI, and I havent heard any major issues. You may have to tweak the configuration to get it to work correctly, but as far as I know, it works fine.

[tato386]

Thanks for the info.

Rgds,

Diego

[hassan_oudeh]

Hi,

I have a small problem with my FAX machine which is connected to FSX port.

The call flow is :

PSTN --E1--> 2811-GW --FXS--> Fax Machine

The problem is unpredictable as sometime the fax works perfectly (sending and receiving) and sometimes it will be cutted means that only half of the page can be send/receive and the rest are blank !!

any idea please ?

regards,

[paolo bevilacqua]

Please check for slips with "show controllers e1" and add the network-clock-participate and -select commands.

Hope this helps, please rate post if it does!

[hassan_oudeh]

i alreday did it. but still the same !

how i troublshoot this issue, debug or somthing !?

thanks

[3dtgnt_ljm]

I have the same problem ! Is there someone can told me how can I do ? thanks

[paolo bevilacqua]

Whta problem exactly do you have and what type of lines, and how you faxes are connected.

[hassan_oudeh]

fax machine is connected to FXS port on the router. it have a DID number taken from E1 line on the same router.

so the call fllow PSTN->E1 POTS->FXS POTS

The probelm is when sending.reciving the faxs it's not complete, i.e. if the original page was:

line1

line2

line3

line4

line5

will recive the fax link this:

line1

line2

line4

lin5

it's un-predictable behavoir !

im not able to know how we can dubug or fix it !

any help will be appreciated please....

regards,

hasan

[wbarren]

We use CME on a 2811 and are faxing using an ATA and experienced the same issue. Turns out when we disabled the "G3" feature on the fax machine it fixed everything. We also use this setup through an FXS port without issue.

[paolo bevilacqua]

Likely you do not have network-clock-participate and network-clock-select commands for this circuit. Result are slips that you can see with "show controllers E1". Configure said commands and problme will be resolved.

Hope this helps, please rate post if it does!