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.