mscVsrSvsStatus 1.3.6.1.4.1.562.36.2.1.117.2.12.1.1

This attribute indicates the current state of the channel. idle means that there is no call currently active on this channel. seized means that the channel is currently setting up a call, but a connect message has not been received. answered means that a connect message has been received. clearing means that the call is being taken down. lockout means that due to glare or channel rejection, the channel is available for ingress calls only. That is, either the PBX and the Passport tried to seize the channel for a call at the same time (glare), or the PBX rejected the Passport seizure. idleMaintenance means that due to explicit channel maintenance messages, the channel is not available for egress calls. This can only happen when the protocol control places the channel into a maintenance state, and only happens if the Passport receives a message causing the channel state change such as the SERVICE maintenance message.