[asterisk-users] Grandstream blind transfer issue

Gordon Henderson gordon+asterisk at drogon.net
Tue Apr 7 12:42:08 CDT 2009


On Tue, 7 Apr 2009, Max Alex wrote:

> Hi All,
> I have working asterisk version 1.4.24.
> I have a blind transfer issue with grandstream bt200.
> I have updated the latest firmware to the phone.
> The phone is sending the *refer* to asterisk but asterisk is not able to
> connect with the another call
> that i have checked in sip debug.
> I am using transfer button of the grandstream phone.
> Can anybody provide help for this issue?
> Thanks in advance!!

How are you doing the entire transfer operation?

For blind transfers, I do:

  Push Transfer
     (caller is now on hold, you get a new dial-tone)
   dial extension and push SEND

At this point, called phone rings and caller is immediately taken off hold 
and transfered to the new ringing phone... you can hang up at that point.

Don't use the 'flash' key.

I have many BT200's and GXP280's out there - this seems to work for them 
without any issues. Asterisk 1.2 though.


Gordon





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