Problem with the call pick-up function.

[benny]

Hey Guys,

i have a problem with the pick-up function.

My situation is the following:
I have 4 phones (T46G, T42G, Snom300, GigasetC610) and I'm using a free-pbx (I'm not the admin of this).
I configured the BLFs like this:
Type: BLF
Value: 1201
Name: testname
Extension: **

I tried the following combination of calls. Sometimes the pick-up worked and sometimes not.
Caller -> Callee -> Pick-Up by -> Works?
Snom300 -> C610 -> T46G/T42G -> yes
Snom300 -> T46G/T42G -> T42G/T46G -> yes
T42G -> Snom300/C610 -> T46G -> no
T46G -> Snom300/C610 -> T42G -> no

In the cases where the pick-up does not work, I observed a strange behaviour.
The phone of the caller is still ringing, the phone, which picked up the call, shows that it picked up the call and the phone of the callee says, that the call was completed elsewhere.

I don't know if i made something wrong or do i have to add something in the settings of the phones or might this be a problem with the server?

I hope you can help me identify the problem.

Thanks in regards,

Benny