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S13 Reserved
S14 Echo, response, dialing,
originate/answer
S15 Reserved
S16 Modem test options
S17 Reserved
S18 Modem test timer
S19 Reserved
S20 Reserved
S21 Auto retrain, RTS/CTS,
DTR, DCD, DSR
S22 Speaker and response
S23 RDL, DTE data rate,
parity,and guard tone
S24 Reserved
S25 DTR delay
S26 RTS/CTS delay interval
S27 Async operation, Line
type
S36 Negotiation Fallback
S37 Maximum line speed
S38 Forced hangup delay
S46 Select data compression
S48 Feature negotiation
S49 Buffer lower limit
S50 Buffer upper limit
S63 Leased Line carrier level
S82 Break Signaling
S86 Connection failure code 0, 4, 9,10, 12-14
S98 Speakerphone squelch timer 0-255/.001second
Section Five - Result Codes
BASIC RESPONSE CODES
OK
RING
ERROR
NO DIALTONE
NO ANSWER
CONNECT 4800
CONNECT 9600
CONNECT 14400
CONNECT 38400
CONNECT 1200/75
EXTENDED RESPONSE CODES
Bit-mapped
Bit-mapped
0-255/seconds
Bit-mapped
Bit-mapped
Bit-mapped
0-100/seconds
0-255/0.01 second
Bit-mapped
0-7
0-11
0-255
136, 138
0, 7, 128
0-255
0-255
0-15
3, 7, 128
0
CONNECT
2
NO CARRIER
4
CONNECT 1200
6
BUSY
8
CONNECT 2400
11
CONNECT 7200
12
CONNECT 12000
13
CONNECT 19200
28
CONNECT 57600
22
CONNECT 75/1200
13
0
5
1
7
0
20
138
7
10
200
0
128
10
1
3
5
7
10
24
25
14
29
23
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