[Asterisk-Users] Asterisk integration with Meridian 1 Option 11 / ISDN30

[Joe Dennick]

We're currently working on integrating * with a Nortel Option 61c (that runs
pretty much the same software).  We've got a PRI T-1 tied between the * and
the Nortel running regular US PRI.  Both systems understand the protocols and
it works fine.  Currently the * can place calls to and/or through the Nortel
without issue, but the Nortel can NOT send any calls to the Asterisk because
the Nortel software needs a module called CDP (Coordinated Dial Plan) in order
to be able to route calls to/through the Asterisk.  Our local vendor has
quoted that stupid module at about $7,000 (USD) including installation. 
Before continuing too far, you should make sure you either have this module
(CDP), or are willing to purchase it.

Julian Lyndon-Smith <asterisk at dotr.com> wrote:

 Greetings to one and all on this fine list;
 
 We have the current system:
 
                         Meridian 1 Option 11
                         +-------------------+
                         |                   |
 ISDN/30 (DASS/2)   ===> |NTAK79BB (2MB Pri) |
                         |                   |<-->4x16 port Digital / 1x16
 port Analogue
 ISDN/30 (EUROIDSN) ===> |NTBK50AA (2MB Pri) |
                         |                   |      Melita predictive Dialler
                         | NTAK79BC (2MB Pri)|<===>
 +---------------------------+
                         |                   |      |
 | 
                         | NTAK79BC (2MB Pri)|<===> | Aculab E1 SC-BUS ISA
 |
                         |                   |      | (Dialogic D320/SC)
 | 
                         |                   |      | (Dialogic DCB/SC)
 | 
                         |                   |      |
 | 
                         +-------------------+
 +---------------------------+
 
 We are in the process of removing the Melita dialler from the system, and I
 want to install * as the "main" pbx to provide for VOIP, voicemail and
 legacy pbx integration etc. etc.
 
 I have been able to setup, install and configure an * box with the x100P and
 a isdn2 card (avm fritz) running under fedora. Great stuff. 
 
 Now, in order to move to the next stage, I have a couple of ideas and
 questions.
 
 1) Has anyone any idea why the Melita dialler is configured this way ? We
 have had no end of problems with the system. I would have thought that the
 dialler would be between the PSTN and meridian (thus saving on the two NTAK
 cards)
 
 2) I have read in the archives that that * / digium does not support the
 DASS/2 ISDN 30. So, would we need to install a whole new ISDN Euro/30 or
 could we upgrade the DASS/2 to EuroISDN. We have asked BT, but their support
 systems need, well, this is a public forum....
 
 3) I was going to get a Wildcard TE405P or Wildcard TE410P card, and put *
 between the PSTN and the PBX, so things should look like this:
 
                                        Meridian 1 Option 11
                        + -------+     +-------------------+
                        |        |     |                   |
 ISDN/30 (EUROISDN) ===>|        |===> |NTBK50AA (2MB Pri) |
                        | TE405P |     |                   |<-->4x16 port
 Digital / 1x16 port Analogue
 ISDN/30 (EUROIDSN) ===>|        |===> |NTBK50AA (2MB Pri) |
                        |        |     |                   | 
                        +--------+     +-------------------+ 
 
 Does anyone see any problem with this ? We could then add VOIP the box, and
 with the appropriate dialplan things should work just great ... ;) 
 
 Would it be possible to remove one of the NTBK50AA cards, or would you need
 two cards (we already have the extra card "in the back") for 32+ channels ?
 
 4) I presume that the Aculab / Dialogic stuff should be junked ? They are
 ISA slots ...
 
 5) What happens if * fails ? I have read in the archives that it would be
 possible simply to plug the ISDN straight back into the meridian box in case
 of emergency. Is this valid ? I cannot see why it shouldn't be.
 
 If anyone has any comments or suggestions, they would be more than welcome.
 Things like signalling protocols, the .conf files for the EuroISDN would be
 most gratefully received.
 
 The last issue is, how do I set it up so that I can do systems integration
 testing ? I would not want to take out the lines during working hours - and
 would need to be able to bounce the * box up and down as required.
 
 We are keeping a log of all the things that we are doing for this project.
 Once complete, we will write it up as a whitepaper and give it back to the *
 community.
 
 TIA
 
 Julian.
 
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