An error message "B channel out of service".

[imt000040]

Much thanks for you spent time to answer my question.

I set the "E1 Enhanced Card" on VG200 for MGCP and work with CCM3.3.2.

Also the IOS of VG200 has been upgraded to version 12.3<3a>.

But this error also will generated of each B channel.Could you help me to solve the problem ?

Thanks !

[imt000040]

Help !

I want to know which the IOS version for VG200 E1 card can support the "DTMF Protocol"?

I only found the "ISDN Protocol" in IOS 12.3<3>.

Thanks !

[wong34539]

When I checked , it looks like

DTMF Events Through SIP Signaling

DTMF Relay for SIP Calls Using Named Telephone Events (NTE)

H.323 Dual Tone Multifrequency (DTMF) Relay Using Named Telephone Events

MGCP Based Fax (T.38) and DTMF Relay

VG200 doesnt support the above. But in other platforms it is supported in - 12.3(3)

[imt000040]

Thanks !