Fax issues 1

[Montero84]

It’s actually an issue with the Long Distance lines. All calls from the facility phone system come across caller ID. the facility main phone number. Because of this our LD carrier is not able to add our fax machine numbers into a program that allows them to be routed through special, better quality lines that are more expensive for them to use. This is causing most of our long distance faxes to fail and report bad lines as the reason.

As a temporary solution they have added our main number into this table. Because of the extra expense of this they are asking that we find a way to have the Avaya system treat fax calls differently.

I found a couple different places that I thought might be related in the ip-codec-set screens but wasn’t sure.

I changed Fax Mode to pass-through in the ip-codec-set 1.

Any ideas or solution?

Thanks in advance!

 

[dufus2506]

You should fill in the public-unknown numbering table for the fax station extensions.

Type the command:
change public-unknown-numbering x

Where x is the length of your extensions. (We use 5 digit extensions, so for me x is 5.)

Fill in the table with information necessary to send the caller ID information. You can be as general or as specific as you want with the "Ext Code" and "CPN preix" columns. If you just put the first dialed digit into that column, you'll send caller ID for any extension that starts with that digit. If you put a full 10 digit number into the CPN prefix column, you can make any extension send any caller ID you want.

Carpe dialem! (Seize the line!)

 

[MasterRacker]

Montero84, can you provide more detail on what these "special" lines are?

In your ip-codec-set, if you're using pass-through for fax, make sure to set the modem mode to relay. Don't use pass-through for both. Also, make sure you have the G.711 codec in the set.

Jeff
[small][purple]It's never too early to begin preparing for [/purple]International Talk Like a Pirate Day
"The software I buy sucks, The software I write sucks. It's time to give up and have a beer..." - Me[/small]

 

[Montero84]

Hello,

In your opinion which is the best way to set those up. Fax – relay and modem – pass-through or the other way around?

Thanks!

 

[hanluc6933]

Experienced a similiar issue. The fix was firmware upgrades.

Do the day and let the day do you.

 

[Montero84]

Hello handluc6933

It's probably a stupid question but, do you mean firmware upgrade for the PBX or the firmware in the fax machines?

 

[MasterRacker]

In my case I have have fax = pass-thru and modem = relay, but you need to experiment for yourself. There doesn't seem to be a hard answer. I also still have problems. Most of our faxes are on discrete analog lines separate from the phone sytem and even those have occasional problems based on what's on the other end.

Another thing that may help: if you can get into advanced settings in your fax machine, try disabling "Super G3" or other newer compressing protocols, set the speed ceiling at 14.4K and generally dumb it down as much as possible.

The problem these days is that faxing (and modems) are old analog protocols that push data out in a way the old phone network was never designed for. To compound the problem, even a dedicated analog line for your phone provider will still still go digital at some point out in the phone cloud.

Jeff
[small][purple]It's never too early to begin preparing for [/purple]International Talk Like a Pirate Day
"The software I buy sucks, The software I write sucks. It's time to give up and have a beer..." - Me[/small]