Fax server with DID how do we proceed?

[chipig]

Hi,

We have 19 DID as fax number in our company.
Each DID go to a specific extension (CMD 7601).

We want to eliminate all fax machine connected to the 19 extensions by using a fax server:

What we have is a fax server with 4 line input.
We want to be able to use 4 extensions for 19 DID
fax numbers

When the fax is received by our fax server, it sends the fax to an email.The problem is:

Our fax server needs to receive the fax number that was dialed as well as the caller ID.We need to know which fax the user dialed in order to know at which email we will transfer the fax.

I am clueless about how to differentiate 19 DID on 4 extensions.Any help would be greatly appreciated.

 

[OzzieGeorge]

what you do is create 5 new extensions (cmd 10 or 14) and put them into a UCD group (Cmd 17) one of them becomes the pilot and is made permenantly busy in software (Cmd E5). The other 4 are connected to your server and are programmed as Voicemail extensions (Cmd 1310) this tells the system to communicate the extension number the call was originally for to the equipment it is connected to using DTMF tones. You then permenantly forward the 19 DIDs to the pilot number of the group you created (Cmd E600) and that is it.

 

[chipig]

Wow thanx a lot I really appreciate this.I will give it a try.Is this something that has been tested before?

 

[OzzieGeorge]

It's been around for a long time. There is a better alternative using an MCI link to the fax server, but that is more complicated and may need additional equipment. This way should give you all the functionality you need if the fax server will work with it. The reason it works is when the fax server answers, the pabx immediately tells it the extension number the call was originally for using DTMF tones and then connects the actual call. This used to be the way voicemail worked before MCI was available (some still do). You can play with the facility by setting up an analogue extension and then set it as a fax extension in Cmd 1310. If you then have the handset to your ear with your finger on the hookswitch then get someone to ring an extension that is forwarded to your analogue, you should be able to hear the tones when you go off hook.

 

[pave35]

I think you may have left out one step Ozzie.
You must create a phantom extension (in your case 19 of them)for each of the DID's to be converted to. You then call forward these phantom extensions all calls to the fax server pilot. Whe the fax port answers the PBX will pulse the DTMF tones of the phantom extension. The extensions can be Dterms or single lines in a non-equipped PIM or virtuals.
Inband DTMF digits are ONLY sent on a call forward to a VM/Fax port so if you simply point the incoming DID in CM 76 to the fax server pilot it will answer but no digits will be pulsed thus you will not know which DID it came in on.
Also if this is an IVS and you have an MCI link to the VM (08>443>0) you cannot get inband DTMF as described. With IVS there is an ugly work around using analog tie lines tied together to repulse the digits.
This issue was corrected in IVS 2 with the addition of CM 1225 which allowed you to get DTMF tones to single line port even if you had an MCI link.
With all this said you will get the dtmf from the called number but you will not get the caller ID. That would be part of the actual fax transmission.

 

[OzzieGeorge]

Pave

The original post said "we have 19 DID" so I assumed they already existed but your point is valid, why waste the physical equipment.

 

[chipig]

First of all thanx a lot for all your help, it's awesome.

Ok so far it's working, if I pickup the phone I can hear the DTMF tones which sounds like the DID phantom extension. I do not have the server up and running yet, so I'm testing it using a phone. The part I do not understand is the UCD group. Why make a group? I made a group, but it is not working unless I use CMD E601.

4924 is the pilot number of the group and is made busy via CMD E50 but it will not transfer the incoming phantom extension to other extensions in the group. I have to call forward (E601) the pilot number to the voice mail extension to make it work.

Am I missing something or you just forgot to mention that I have to call forward the busy pilot number to my fax server lines with CMD E601.

 

[pave35]

What are the actual fax extensions connected to the server and I can give you the exact assignments.

 

[OzzieGeorge]

I'm away from home at the moment but the reason for using a ucd group is to spread the load evenly between all the ports. I seem to remember from years gone by that you may need to log the statiins on to the UCD group to make them work. However there are people here who can answer that as I don't have access to any manuals at present. At a pinch you can use call forwards but a UCD group is a better way to go if you can get it working.

 

[chipig]

The fax server extensions are 4920,4921,4922,4923.
The pilot number is 4924.

 

[chipig]

OK I've found the problem.. I forgot to put the UCD in a group number CMD172.So here is what I did:
Let me know if I forgot something:

170>4924:4921-
170>4921:4922-
170>4922:4923-
170>4923:4924-

171>4924:1- (pilot)

172>4924:15- (group number)

E50>4924:0- (pilot always busy)

1310>4920:0- (VMS station)
1310>4921:0-
1310>4922:0-
1310>4923:0-

1225>4920:0- (DTMF tones)
1225>4921:0-
1225>4922:0-
1225>4923:0-

 

[ctvi]

170>4924:4920- (you missed 4920)
170>4920:4921- (missed 4920)
170>4921:4922-
170>4922:4923-
170>4923:4924-

Need to add all of the members and pilot to group 15

172>4924:15- (group number)
172>4920:15- (group number)
172>4921:15- (group number)
172>4922:15- (group number)
172>4923:15- (group number)

http://www.ctvi.com

 

[pave35]

The other main reason for the use of the UCD is that if all ports are busy the next incoming call will queue waiting for an available port where as using busy forward (E601) you will get a busy once all ports are off hook.
If you need to make any corrections to a UCD group you must typically undo all programming for the group first starting with CM 172, then CM 171, and then CM 170. When all undone then re-assign the group again, including the corrections, starting with CM 170, CM 171, and finally CM 172.
Trying to patch it usually results in failure.
Also remember the very first call to a UCD/ACD group will give a busy. Subsequent calls will ring.

 

[pave35]

Almost forgot.
The inband DTMF from the NEAX 2000 is pretty slow for most fax servers/VM systems. Try the following...
CM 410>44>00
CM 410>49>02
This will speed up delivery of the calls considerably.

And for proper disconnect supervision to the fax ports...
CM 1322>4920~4923>0 Momentary open on disconnect.
CM 411>08>05 lengthen the momentary open on disconnect to 500ms.

 

[chipig]

That's great. I will follow your advice on this.
We are installing the fax server next monday.I will let you know how it goes.Thanx again for the tips.

 

[chipig]

Ok I did all this and it is working BUT once in a while the fax board cannot get the line. And for some reason it is always in the morning around 8:00 AM.It seems like the fax server is not fully awake.How can this be? I have to retransmit the fax 2 or 3 times to get it started.Once it is started it is running fine. For testing purposes I am sending a fax to my own DID.

Could this be related to my UCD.I know my lines are ok.

Our fax board is a Eicon Diva with 4 analog line input.

I have created 5 subscribers in my AD-64. (4920,4921,4922,4923,4924)
I have disabled notifications.
I was wondering if this could be the problem...
I do not think the extensions have to be present in the
AD-64 but I am not sure.

Any ideas would be appreciated.