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Ground Start Signaling
November 2009 295
Figure 34. FXO Ground Start - Outgoing Clear Timing Diagram
IISDN SMI MESSAGES: L4L3mCLEAR_REQUEST
L3L4mCLEAR_REQUEST
IISDN TIMERS:
hooktimer_onhook_rls
hooktimer_offhook_inseize
guard_interval_timer
ign_insz_post_rls_timer
hooktimer_onhook_rls
RECEIVE HOOKSWITCH, FXS:
A Bit
B Bit
TRANSMIT HOOKSWITCH, FXO:
A Bit
B Bit (ignored)
NOTE: This diagram is designed to give the reader a general understanding of the sequence of events for this robbed
bit protocol over time. The timers and spacing on this graph are not proportional to the actual events that occur.
Revised 10-Nov-98
Revision 1.3
RECEIVED BITS,
TRANSMITTED
Revised
20-Oct-03
Rev 1.4