November 2009

291

Figure 31. FXO Ground Start – Incoming Call Timing Diagram

IISDN SMI MESSAGES:

L4L3mALERTING_REQUEST or L4L3mPROGRESS_REQUEST

L4L3mCONNECT_REQUEST

L3L4mPRE_SEIZE

 

L3L4mSETUP_IND

 

IISDN TIMERS:

 

 

 

hooktimer_onhook_rls

 

 

 

modified_in_rls_timer

 

 

 

hooktimer_onhk_mod_in_rls

 

 

 

critical_timer

 

 

 

hooktimer_maxmake

 

 

 

hooktimer_minmake

 

 

 

hooktimer_maxbreak

 

 

 

hooktimer_minbreak

 

 

 

first_indigit_timer

 

 

 

dptimer_immed_delay

 

 

 

hooktimer_offhook_inseize

 

 

 

RECEIVED BITS,

 

 

 

A Bit

 

 

 

B Bit

DP Digit "2"

DP Digit "1"

 

TRANSMITTED

 

 

 

 

A Bit

 

 

 

B Bit (ignored)

 

 

Revised 20-Oct-03 Rev1.4

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.

 

Ground Start Signaling

Page 291
Image 291
Dialogic 6.2 manual FXO Ground Start Incoming Call Timing Diagram, November 291