obi200 with SIP grandstream GXP2170 , transfer and conference

[mtsmello]

Hi

i'm running two GV numbers on SP1/SP2 and two SIP configured at SP3/SP4. I have a grandstream GXP2170 , its configured to run one of the SIP phone , it works perfectly , i can make , receive calls but transfering calls or conference calls dont work. Everytime i try the SIP account just drops and stops working and recycles after 1 minute or so. Is there any special configuration to make it work on obi expert?

regards

[drgeoff]

Your question is a copy and paste of the one you asked yesterday http://www.obitalk.com/forum/index.php?topic=16152.msg100299#msg100299

Please do not ask the same question more than once. It does not get seen by more eyes and having replies split across multiple places is not helpful to those attempting to assist you.

Responders are requested to do so only in the original thread.