1) You have enough customers to fill 6 PRI lines (138 B channels)
2) At any moment half of the connections will be ISDN only
My solution was to buy three PM3s, two with 48 modems and one with no modems.
This was my implementation plan:
1) Put all 6 PRI lines in one hunt group
2) Connect the PM3 with no modems to the first two PRI lines
3) Connect the two PM3s with modems to the last four PRI lines
It was my expectation that customers calling in with modems would pass
through the B channels with no modem capability and connect with the first
available modem. ISDN customers would grab the first available B channel,
preferably on the PM3 with no modems.
I thought it sounded like a good plan, but it doesn't work. I brought this
plan up in conversations with Livingston sales and tech support people and no
one ever said it wouldn't work, so I'm assuming I'm doing something wrong.
The phone company says it's up to our box to signal back to theirs that there
is no modem capability on the line, so they can continue hunting through the
hunt group. Presumably our PM3 is not doing this. We are running ComOS 3.5c6.
I can't be the first person to try this, can some kind soul please tell me
where I'm going wrong. I have opened a tech support call with Livingston,
no answers yet but I'll be happy to post them once I get this figured out.
Thanks for the help,
Joe Brewer
joe@net1.net