ZETRON Model 16 - Page 70

SECTION 4D - HAYES COMPATIBLE MODEM INTERFACE
Hayes Compatible Modem S-Register Summary
Reaister Ranae
Description
SO
0-255 rings Select ring to answer on
SI
0-255 rings
Ring count (incremented with each ring)
S2
0-127 ASCII
Define online escape character
S3
0-127 ASCII
Define carriage return character
S4 0-127 ASCII Define line feed character
S5
0-32,127 ASCII
Define back space character
S6
1-255 sec
Wait time before blind dialing
S7
1-255 sec
Wait time for dial tone
S8
0-255 sec Delay for each comma in dial string
S9
1-255 1/10 sec Carrier detect response time
S10 1-255 1/10 sec Delay from carrier loss to hangup
Sll
50-255 msec
DTMF on/off time
S12
0-255 1/50 sec
Escape sequence guard time
S13-15 Reserved
AT Command Response Codes
Numeric Verbose
0 OK
1 CONNECT
2 RING
3 NO CARRIER
4 ERROR
5 CONNECT 1200
6 NO DIALTONE
7 BUSY
8 NO ANSWER
10 CONNECT 2400
11 CONNECT 4800
12 CONNECT 9600
Description
Command executed
Connection at 300 bps
Ringing detected on telephone line
Carrier signal not detected, or lost
Invalid command, command line error, or
command 1ine exceeds 40 characters
Connection at 1200 bps
No dial tone detected
Busy signal detected
No silence detected when dialing a
system not providing a dial tone
Connection at 2400 bps
Connection at 4800 bps
Connection at 9600 bps
4D-6