
Configuring Frame Relay Services
2-12
117376-C Rev. 00
Call Setup
A frame relay SVC is established using the frame relay signaling protocol
between the subscriber (DTE) and the network. This protocol is described in the
sections that follow. The timers used in this process are summarized in Table 2-3
(column 1, Timer, contains the Site Manager parameter name).
Table 2-3. Network Timers
Timer
Default
Time-
Out State of Call Cause for Start Normal Stop
At First
Expiration
At Second
Expiration
T303 4 sec Call present Outgoing setup
message
Incoming connect,
call proceeding, or
release message
Retransmit setup
message; restart
timer T303
Clear call
T305 30 sec Disconnect
indication
Outgoing
disconnect
message
Incoming disconnect
or release message
Network sends
release message
Timer not
restarted
T308 4 sec Release
request
Outgoing
release
message
Incoming release or
release complete
message
Retransmit
release message;
restart timer T308
Call cleared;
timer not
restarted
T310 10 sec Incoming
call
proceeding
Incoming call
proceeding
message
Incoming connect or
disconnect message
Call cleared Timer not
restarted
T322 4 sec Any state Outgoing status
inquiry message
Incoming status,
disconnect, release,
or release complete
message
Retransmit status
inquiry message;
restart timer T322
Retransmit
status inquiry
message;
restart timer
T322
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