Specifications

MultiModem ISI Hybrid Series, ISIHI-2S/2U 87
Chapter 4—MODEM AT Commands, S-Registers, Result Codes
S89 Off-line Time
Unit: 1 second
Range: 0, 5-255
Default: 0
Sets the length of time, in seconds, a modem waits in the off-line command mode before
it goes into standby mode. If S89 is set to 20 seconds, the modem waits 20 seconds in off-
line command mode before going into standby mode. Setting S89 to zero (0) prevents the
modem from ever entering standby mode.
Setting S89 to any value between zero and five (1-4) effectively sets the value to five,
because five seconds is the minimum possible wait time.
S108 Line Code Control
Unit: Decimal
Range: 0, 1
Default: 1
Controls the line coding used by the modem.
S108 = 0 mu-law
S108 = 1 A-law (default)
S109 PCM Mode Control
Unit: Decimal
Range: 02
Default: 1
Controls the PCM mode (V.90 or K56Flex). Determines which mode the modem will
answer in for PCM connections.
S109 = 0 K56Flex support only
S109 = 1 Both V.90 and K56Flex supported
S109 = 2 V.90 support only