PRI in Legend as Key system

[nydavid]

My Merlin Legend release 6.1 documentation ( I have a releae 7 system) has conflicting information as to whether or not I can provision a PRI trunk in Key mode.

So folks, can I configure a PRI trunk using a 100D module on my Legend R7 system in Key mode?

If yes, I'm a bit confused as to how I determine what lines to enter into the B-channel group. I entered the B-channels
as 0523, 0522, etc. But I don't get the concept of lines. My system has already assigned lines 813 - 836 to this slot, as I would have expected. What is meant by the concept of entering lines into the B-channel group?

Thanks!

 

[CarGoSki]

0523 through 5001 means slot 5 b-channels 23 to 1. This is channel descending and is perfect for CPE use. One side has to ascend(Central Office) and the other descends. A call will arrive from the CO from the low to high channels and the pbx sends a call from high to low.

Lines are assigned in the lagend and magix based on trunks intalled into slots. From slot 1 to 17, trunk 801 will be the first trunk on the leftmost slot with a trunk capability in it.

A b-channel and a line a coupled together(loosely) in an ISDN setup.

I do not know if you can build a pri in key mode but since you can not access PRI channels using programmable buttons on a phone I doubt that you can.

You can assign robbed bit T1 trunks to buttons.

 

[CarGoSki]

I meant 0523 to 0501. Typo dont cha know.

 

[merlinman]

I think CarGoSki, is correct. Considering you can not DIRECTLY ACCESS "B" Channels with PRI, then A KEY MODE Configuration will not work.

I recall another rule of thumb was that to have a T1 configured with TIE LINES, again, you had to be in HYBRID PBX.

I checked the Pocket reference, and it does not make that very clear.

Short of setting one up in my lab, I am rather positive this will not work.

 

[Pepperz]

I made a mistake once, and brought one up in the Key mode, didn't test much, but was able to get it up. Feature reference says Key mode is an option as well, so it can be set up in key mode. BUT where are you going to put all those lines on a Magix phone?

Pepperzgm at gmail dotte comm

 

[merlinman]

A very good point, unless they give you a PARTIAL T1.

I have seen this done with PRI, but not often.

Also, I always set the system up as HYBRID PBX, even if I use it as KEY.

I take the LINES out of the POOLS and assign them to each Extension as needed.

It makes life (programming) a lot easier I have found.

 

[nydavid]

Thanks, folks, for the responses. This PRI has only 4 B-channels in addition to the D-channel. The rest of the T1 is used for data. It's not a problem to assign these 4 lines to our MLX-10D phones.

Now that I understand the the configuration was asking me to MAP the automatically created lines (in my case starting at 813) to the newly created b-channels (in my case 0523 - 0520), I did that, and placed the 4 lines on some phones. It worked, but only for outgoing calls. I therefore conclude that PRI works in Key mode, at least to call out.

Some problems:
1) It's dropping my first digit, which is a leading '1' for toll calls. If I dial 1-1-npa-nnx-xxx it works fine.

2) I programmed a test number (Lines-Trunks/PRI/Test Tel Number) but I get re-order if I call it from outside. Do I need to do more to make it ring on a station that already has all 4 lines?

3) It stopped working altogether. I THINK it stopped as I was trying to figure out how to fix item 1, but I'm not sure. I know the password to get the monitor to trace, but I don't see anything when I attempt to place a call. I see no system alarms,so I assume the D-channel is up.

How can I tell for sure that my D-channel is up? If I messed this up while trying to fix it, what do I need to do to delete all of my PRI config and re-do it from scratch? I'd like to avoide a system restart, if possible.

Thanks again for the continuing help!

 

[CarGoSki]

You should print PRI and see if the incoming routes and network tables exist. Perhaps they do not.

 

[nydavid]

Ok, I now have outgoing calls working (I needed to make some changes to the operator category in the special service table) . To get the incoming service working, I needed to assign the test number (the only one currently in service with the provider) to a line and REMOVE IT as test number. This makes we wonder what the test number is for and how I would use it if I had real numbers assigned to each of my 4 lines (corresponding to my 4 b-channels).

On the incoming lines (remember my Legend is in key mode - I wish I had set it up as PBX), can I establish more phone numbers than B-channels? I'd like to be able to use incoming digits to route calls to various groups of extensions but not be limited to just my 4 lines with 4 different numbers. Is there a creative way to do this in key mode?

Thanks!

 

[CarGoSki]

PRI in Key mode. I suppose congrats are in order that you are able to make it work?

Post the PRI print.