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Appendix A - Call Control Scenarios
369
BRI Channel Initialization and Start Up (Network Side)
Synchronous or Asynchronous Programming
Application
Device Driver
State
Firmware
User to-
Network
cc_Open( )
-->
NULL
Return with line
device
<--
cc_SetDChanCfg( )
-->
Initialize
-->
Configures
protocol
and BRI
station D
channel
settings
DATA_LINK_UP
Establish
Data Link
(if Terminal = North
American)
CCEV_TERM_REGISTE
R
<--
SME_TERM_REGIST
ER
<--
SPID
informat-
ion
cc_TermRegisterRespons
e( )
(if Terminal = North
American)
-->
CCEV_RCVTERMREG_A
CK (if positive
ack) /
CCEV_RCVTERMREG_N
ACK (if negative
ack)
-->
Positive or
negative
acknowledge
-ment of
SPID
information
-->
Required for both synchronous and asynchronous programming model.