Some phones not transfering call

[andykeen]

Hi All.

Hope this is a simple one.

We have a 3cx system with 4 phones.

2 of the phones are the cheapo - Grandstream Budgetone 201 and the other 2 are Grandstream GXP 2100

Here’s the thing - I receive an incoming call and I answer on a Budgetone 201 extension I can transfer the call to another Budgetone 201 and/or I can transfer to a GXP2100 no problem.

However if I receive the incoming call (or an internal call) on a GXP2100 I cannot transfer it to another phone - either a Budgetone 201 or a GXP2100. I can successfully place the call on hold on the GXP2100 and the other extension or caller can hear the music on hold and I can dial an extension, but it will not connect.

Does anyone have any ideas here please?
Thanks you
Andy Keen.

 

[leejor]

How are you actually doing the transfer? The buttons on some phones can have functions changed in the settings and may not be performing the function as labelled.

 

[andykeen]

Answered my own question with some digging - if anyone interested check-out

http: //www.3cx.com/blog/voip-howto/attended-transfer-grandstream/ - NOT AVAILABLE - UNSUPPORTED MODEL