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.