Multi-Tech Systems MT3334HD8 Registers, S0 Number of Rings Until Modem Answers, S1 Ring Count

MT3334HD8 User Guide

Introduction

This chapter describes the MT3334HD8’s S-registers, which are small regions of memory where modem configuration information is stored. Whereas AT commands tell a modem what to do, S-registers tell the modem how or when to do it. Each S-register has a name that consists of the letter S and a number (S0, S1, S2, etc.), hence the term S-register. Use the Sr? command to read the value stored in an S-register, and the Sr=n command to change it.

S-Registers

S0 Number of Rings Until Modem Answers

Unit: 1 ring

Range: 0–255

Default: 1

S0 defines the number of rings the modem waits before answering an incoming call. The default value is one ring, which causes the modem to answer the call immediately after the first ring. The maximum number of rings that can be configured is 255. Setting the value to zero disables auto answer.

S1 Ring Count

Unit: 1 ring

Range: 0–255

Default: 0

S1 counts the number of rings that have occurred. It is a “read” type of register and is seldom, if ever, used in typical operation. Each time an incoming ring signal is detected, S1 increases its value by one, up to a maximum of 255. If you set S1 to a value other than its default value of zero, or if the value is increasing with rings, this new value remains stored in S1 for eight seconds after the last ring is counted, after which the value reverts back to zero.

S2 Escape Code Character

Unit: Decimal

Range: 0–127

Default: 43 (+)

S2 defines the escape code character by its decimal ASCII code. The default character is the plus (+) sign (decimal 43). S2 may be set for any ASCII character. Setting an S2 value greater than 127 results in no escape character, and therefore no means of entering command mode from online mode without breaking the online connection, unless you use the BREAK method.

Note: If you change the S2 value, you must make corresponding changes in your data communications software.

S3 Return Character

Unit: Decimal

Range: 0–127

Default: 13 (^M)

46 CommPlete Communications Server