Migration from traditional PBX - Question

[nitrokid]

Hi all,

Would appreciate any help here. I'm just trying to gather knowledge for a migration to IPT next year. I'm not too clued up on IPT right now.

We run our HQ on an Avaya Index system for about 200-300 handsets. Due to the large scale of this, and the nature of our business (absolutley no room for downtime), we need a very gradual migration process. From what I understand, you can connect Voice Gateways to a PBX (providing the relevant interface card is installed on the PBX) and that way we could gradually move the users over as required. Is this correct?

Where I get lost is the following:

Compatibility - Do most voice gateways speak to most PBX systems (again, with relevant interface cards)? Is that compatibility down to the signalling/protocol used?
DDI numbers - they are managed by the PBX, so how can we assign DDIs to IP telephones attached to the voice gateway? Does the interface card attached from the PBX to the gateway give this functionality?

Any help on this would be very much appreciated!

 

[LkEErie]

What am I missing here? The INDeX system has a migration path already.

Of course, with Avaya it's a trick. I got this link on the U.S. website, but couldn't find it on the U.K. site.

http://support.avaya.com/japple/css...80&temp.releaseID=203550&temp.bucketID=160259

LkEErie

 

[donb01]

I would assume for the purposes of DID you would just make believe your voice gateway is in another building. You would set up some kind of trunk group or interface group to it, create a route along that path and tell the PBX that a certain block of numbers will follow that path, and tell the voice gateway that any number unknown to it will be routed back to the PBX for processing. I'm not doing IPT yet, but this is how I envision it, and my voice network is already set up so that any number a branch PBX does not know what to do with it sends back to the main site.

What I would suggest is anyone that moves onto the IPT system gets a new number and you assign a new block of numbers specifically to that system. Otherwise if you have random phones all over your dial plan going to the IPT system you are going to have to touch every one of them to change the routing parameters.

My plan for IPT implementation at this time is to purchase a new system that is expandable and compatible with my current hardware and just add it on, and then have a 5-year plan to gradually increase the size of the new system and decrease the size of the old one. I really don't have that big of a need for IPT at present, and if I had to start with 50 devices out of about 1400 that would be a generous assumption.

 

[jamie77]

If only Avaya continued the INDeX Media Gateway!!! You could put an IPO in now and start the proccess of moving users a DSLC at a time.

We are about to move someone off an INDeX Media Gateway onto IP Phones shortly.

You could put an IPO in and connect it to the INDeX using QSIQ (BRI/PRI) or IP Trunks if you have an IPNC cassette in your INDeX. DDI's could be handled by either system and routing accorss if needed.

If your migration is not a straight swap then careful planning will be needed.

If your going down a full IP Phone route and you are going to connect your PC's to the phones then you could get the IP phones out on desks tested and working and then change programming to make them the active phone with no downtime. then unplug the INDeX DT's and pack them away.

This process could be with any IP PBX but if you go to Avaya by the end of September, you will get extra discount driect from Avaya.

Don't quote me on any of this but it's something like 10% on hardware and 20% on software. There are also possibly some 0% Avaya finance deals knocking about to ease the financial pain a little.

Jamie Green

ACA:Implement - IP Office
ACS:Implement - IP Office

http://www.alliedcom.co.uk

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