| Description | The DS0 group (voice interface) becomes disconnected
when it tries to communicate with the call agent and the
retransmission procedure times out after retrying.
The DS0 group (voice interface ) in disconnected state
starts the disconnected timer initialised to the random
value and uniformly distributed between 1 and initial
waiting delay (Tdinit) in seconds.
The gateway waits for either the end of this timer, or the
reception of call agent command or the detection of local
user activity for the DS0 group(voice interface).
When the disconnected timer elapses, or when a command is
received from the call agent or when there is a local user
activity, the Voice Gateway sends the Restart In Progress
command with the restart method as RM:disconnected to the
call agent.
In case of local user activity, a provisionable disconnected
minimum waiting delay (Tdmin) must have been elapsed
since the gateway became disconnected.
The minimum waiting delay (Tdmin) timeout value used by the
voice Gateway to send the Restart In Progress with the restart
method as RM:disconnected to the call agent if there is
any local user activity is defined by this object.
Media gateway initiated delete connection (DLCX) or restart
in progress (RSIP) commands are not considered as local user
activity.
The events observed on the TDM interface or on the network
constitute the local user activity. |