We currently have an older Detewe OpenCom 150 phone system and i’m looking at a view to convert to Asterisk for some increased flexibility.
We have 3x ISDN2e trunks, 5+ analog extensions and then around 40 DECT handsets. The existing box doesnt support SIP and we’d like some more options, but i seem to be struggling with the DECT side of things.
At the moment there are three DECT “antenna modules” placed around the building, which are wired into the OpenCom150, which has a DECT card in it. The phones can roam around the building, and it all just works. We have a small number of Detewe branded handsets, but the majority are Gigaset devices which are synced up using the GAP protocol.
I’m trying to find a similar solution for Asterisk/FreePBX to handle the DECT phones. Gigaset themselves do a few boxes, but from what i can see they are no use as you can only register about 6 phones to it. Theres a writeup on voip-info but its quite old and much of the links/products it recommends seem non-existant, or link to companies wanting to sell me a “solution”.
The EXP1240 mobility platform supports seamless roaming and hand-off on up to 40 DECT Access points with zero interference with other wireless networks. A single access point can support up to 8 cordless handsets and up to 200 handsets on a single network segment.
The Yealink W52P makes mention of GAP but I can’t tell if it’s referring to the phones, the base stations or both. Maybe give them a call. I have used these before, they are nice and will also provision from the EPM if that’s something you think you need.
The yealink is like the gigaset in that it can only handle 5 phones. I need something larger that supports roaming etc.
It looks like the only options are the bigger systems like the Spectralink(ex Polycom Kirk) 7000 and the Ascom IP-DECT, but neither of these can be bought easily it would seem.