60 locations with 2 major locations. On each of the two major locations is a Notel Meridian, each with an ISDN30 (E1) to the PSTN, and a trunk over IP between them. Total extensions about 500, and on a lot of locations direct PSTN lines, because we don’t have a lot of SIP licences for the Nortel (expensive).
We have a VPN on all 60 locations, with a special voice PVC reserved for VoIP, so data connectivity is good.
I want to introduce * into out company slowly to learn about * and to minimise user impact/outage etc. Starting with the remote locations that have now a direct PSTN line (expensive, and no short ext. nr).
To make changes on the existing Nortel Medrian we have to invest and be patient, becouse we can not do this changes ourselves. So I want to migrate to * with as little as possible changes to the existing PABX.
After reading some threaths about migrating from Medirian to * I’m planning to introduce * by connecting * to Meridian via Grandstream GXW4108’s. 1 or more for calls to medridian extensions, and some GXW’s for calls from Meridian extensions to * extensions. I want to connect * via KPN Voip connect (VoIP operator in Netherlands) to the PSTN.
Also I would like to know how feasable it is to use * as a 500+ extensions PABX. What kind of hardware i’m looking for ? Is * suitable for this size ?
Any advise would be greatly appriciated.