Multi-Tech Systems ISIHP-4SD, ISIHP-4U S76 V.110 Network Rate, S77 V.110 Network Rate Control

Terminal Adapter AT Commands & S-Registers

S76 V.110 Network Rate

Unit:	decimal
Range:	n=1—-—600 bps,
	n=2——1200 bps,
	n=3——2400 bps,
	n=4——4800 bps,
	n=5——9600 bps,
	n=6—19200 bps,
Default:	6 (19200 bps)

If S77=1, then the network rate of the V.110 connection will match that of S76 ($MB). If a V.110 call is received and S77=1, then the incoming V.110 network rate must match S76 ($MB) or the connection will fail. If S77=2 and a V.110 call is received, then the setting of S76 ($MB) will have no effect on the network rate of that call (see S77 for a description for this case). The value of S76 will change if $MB is changed and the value of $MB will change if S76 is changed.

S77 V.110 Network Rate Control

Unit: decimal

Range: n=1 (use $MB (S76)),

n=2 (use $MB (S76)) or Auto Sync on Answer)

Default: 2 (use $MB(S76) or Auto Sync on Answer) The Network Rate for an originated V.110 call will be determined by S76 ($MB) for both S77=1 and S77=2. If the Network Rate of the originated call does not match that of the peer device, then the connection will fail if the peer does not support automatic rate synchronization. If the terminal adapter answers a V.110 call, and if S77=1, then the incoming V.110 Network Rate must match that of the S76 register ($MB) or else the connection will fail. If S77=2, then the terminal adapter will auto- synchronize on the incoming V.110 Network Rate.

S80 Persistent DTR Dialing Delay

Usage:	S80=n; S80?
Unit:	1 second
Range:	n=1-255 (1-255 seconds)
Default:	5 ( = 5 seconds)

Once DTR is detected as present (active high) and other conditions required for the TA to dial are met, a delay of S80 seconds will occur before stored number 0 is dialed. Some conditions include the TA not being in the

134 MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD