Operating instructions

TECHNICAL QUICK REFERENCE

150

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.

To disable V.42 detect phase, select the total of the values for bits 3

and 7.

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.