Using Gigaset N510IP DECT unit. It's a SIP client from the Mitel's point of view, programmed with two SIP extensions.
It has six handsets. The DECT handsets offer the user a choice of 'line' [ie, SIP extension] to use when dialling out, but there are two problems:
- It doesn't tell you if the line is in use or not
- It lets you dial out when a line is busy.
If you try to dial out on a busy line, the 3300 interprets this as an attempt to transfer the call, hilarity ensues, usually involving two external calls being conferenced together.
So, is there any way to allow two concurrent calls from a SIP extension on the 3300?
For anyone using Gigaset DECT kit, can you make them prevent concurrent calls?
I guess the problem here is, I'm expecting phone system-like features of the Gigaset, but it's not a phone system.