Dialogic 6.2 - Manual (Page 361)

Enabling the R2 Protocol
November 2009 361
Call Tear Down
Figure 56 illustrates a call disconnection initiated by the network.
BSMI issues an L3L4mDISCONNECT message. The host responds
with a clear request that is followed with an L3L4mCLEAR_
REQUEST message when the channel has returned to the idle state.
Figure 56. Call Cleared by the Network
(1) L3L4mDISCONNECT
Host
(3) L3L4mCLEAR_REQUEST
(2) L4L3mCLEAR_REQUEST