IP solution with 300 analogue phones

[s95]

One of Client looking for a VOIP solution

They already have an Analogue phone system which is having nearly 300 analog phones all phones are connected to DB in Datacenter room.The customer wants to use the existing analog phones, they don't want to invest in phones.
I want to Know below
1. How I can connect this with and VoIP solution.
2.If I am using extension modules to connect Analogue phones will it support 300+ phones?

If am suggesting server edition of Avaya Ip office how I can integrate this with above scenario do I required IP office 500 system as a gateway?

[markgallagher]

The answers would be much the same whether they used just an IP500 V2 with SIP Trunks or had the IP500 V2 acting at a gateways to IP Office Server Edition.

In both cases the IP500 V2 can host 300 analog extensions. You would need a control unit with a 4-port expansion card and 10 x Analog-30 external expansion modules. That would give you 300 analog extensions and 3 unused card slots in the control unit.

However, you will also require VCM modules to handle the VoIP to analog conversion. You could fit 3 x VCM-64 modules so have up to 196 VCM channels. So depending on what VoIP services the customer is planning on, that would be the limit on the number of analog extensions that could connect to the VoIP services at the same time. If the customer really wanted all 300 analog extensions to be able to access the VoIP services at the same time, they would have to consider having two IP500 V2's each with 150 extensions as gateways to an IP Office Service Edition.

[s95]

Thank for the update it's helping me a lot

One more question, Do I need to connect all expansion modules directly with IP500 V2 I came to know that all the expansion modules require a direct connection to Ip500 v2.Ip office having 8 ports for expansion in the back panel and you asked me to connect a 4 port extension module so total it comes 12.

[markgallagher]

Yes. The external expansion module MUST be connected directly to the IP500 V2 control unit and it MUST be using the Avaya supplied cables. Because the connectors are RJ45 people keep thinking they can use any CAT5/6 Ethernet of any length but the problems is that the signalling isn't Ethernet. So basically they will all be installed in the same equipment cabinet.

Yes, each IP500 V2 has 8 permanent ports for connecting external expansion modules on its back. Adding a 4-port card to the front on the control unit allows it to support 12 external expansion modules, but reduces the slots available for other internal cards to just 3.

[markgallagher]

A colleague has pointed out that I got my numbers slightly wrong, each IP500 V2 control unit is limited to only 2 VCM64 cards.

So the only way you could get to having all 300 analog extensions on VoIP calls at the same time using IP Office systems would involve having them spread across 3 IP500 V2 units networked together in an SCN or as expansions to a Server Edition primary.

An IP Office reseller could run through all this to come up with the best solution, especially based around better knowing how many analog extension would be making/answering external VoIP calls at any time.