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P
ART
III: S
ECTION
D: T
ECHNICAL
Q
UICK
R
EFERENCE
162
Register Default
Function
S15 (cont.)
Bit
Value
Result
3
8
Disable MNP handshake.
4
16
Disable MNP level 4.
5
32
Disable MNP level 3.
6
64
MNP incompatibility.
7
128
Disable V.42 operation.
8
136
Disable V.42 detect phase.
S16
0
Bit-mapped register setup. To set the register, see instructions for S13.
Bit
Value
Result
0
1
Reserved
1
2
Touch tone dialing test.
2-7
4-128
Reserved
S17
0
Reserved
S18
0
Test timer for &T loopback testing. Sets the time in seconds of testing before the
modem automatically times out and terminates the test. When set to 0, the timer is
disabled. Valid range is 1-255.