[asterisk-users] one way audio after call transfer

[Rilawich Ango]

Hi all,

  Recently, I experienced one way audio after call transfer.

incalling call (PSTN)  A --> GXP2000 thro' zap --blind transfer--> destination B
Finally A and B reach each others, but there is only one way audio.
Anyone get the same experience before?  How to solve the problem?

Asterisk vesion:
Asterisk 1.4.15
zaptel 1.4.7
asteriks-addon 1.4.5