we have BRI Port configured as network side:
no ip address
isdn switch-type basic-net3
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
To this port an isdn phone is connected.
Outgoing calls from this isdn phone to the PSTN are no problem and working fine. But incoming calls to this port are only successfull some secondes ago after last external call from the connected isdn phone.
The problem is that some seconds after the last outgoing call from the isdn phone the isdn layer 3 is going down and the isdn status is going back to Tei-assigned.
Is there a command to prevent that isdn layer 3 is going down when it is inactive?