Dear all,
I have setup a H323 gateway in CCM 3.3 connect to 2811 voice gateway to interconnect with Mitel 3300. However it is found that no ringback tone could be heard from either called or calling party from Cisco IP phone or Mitel phone. The call could be ring to destinated ext. and the caller ID could be displayed by qsig protocol. It is very strange that no ringback tone could be heard but busy signal tone could be heard while the called extension is busy. Please anyone help figure out what the problem is.
Many thanks
I have setup a H323 gateway in CCM 3.3 connect to 2811 voice gateway to interconnect with Mitel 3300. However it is found that no ringback tone could be heard from either called or calling party from Cisco IP phone or Mitel phone. The call could be ring to destinated ext. and the caller ID could be displayed by qsig protocol. It is very strange that no ringback tone could be heard but busy signal tone could be heard while the called extension is busy. Please anyone help figure out what the problem is.
Many thanks