Data and control interface

Auto-Registration/De-Registration at connection/disconnection 8-8

Deregistration	8-8
Data forwarding	8-8
Manual transmit control	8-9
Automatic transmit control	8-9
Maximum packet size transmit control	8-10
Escape transmit control	8-11
Usage considerations (for TCP and UDP)	8-11
Auto answer setup	8-11
Flow control considerations	8-12
Flow control and the new end-user	8-13
Flow control in application (online) mode	8-13
Hardware flow control operation	8-14
PAD operating mode	8-14
Data and control interface	8-15
CDPD status sensing	8-15
Escaping through the control interface	8-16
Binary data transfer	8-16
Flow control considerations	8-17
Data forwarding considerations	8-17
Parity considerations	8-17
PAD keep-alive considerations	8-18
Timer expiry in transmit mode	8-19
Timer expiry in receive mode	8-19
Timer expiry for keep-alives	8-19
Escape sequence considerations	8-20
Command response options	8-20
Echo option selection	8-21
Channel acquisition restrictions	8-22
Baud considerations	8-22
Maximum block size considerations	8-23
Modem dial directory	8-24
Messages and response codes	8-25
Messages	8-25

Sierra Wireless, Inc.

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Sierra Wireless DART 200 CDPD Modem manual Data and control interface