MultiModemISDN User Guide

S77 V.110 Network Rate Control

S80 Persistent DTR Dialing Delay

Note: V.110 is supported in build MTA128ST-USB only.

S-Register:

S0

Function:

Number of Rings Until Answer

Unit:

1 ring

Range:

0–255

Default:

1

Description: Sets the number of rings the TA waits for before it answers and begins its

 

connect sequence. S0=0 turns off the ability to automatically answer a call.

 

S0=1 causes the TA to automatically answer after 1 ring. If the S0 value is

 

set too high, the calling device may time out before the TA answers the call.

 

For autoanswer, S0 must have a nonzero value, DTR must be high (&D

 

command), and the TA must be offline.

S-Register:

S1

Function:

Ring Count

Unit:

1 ring

Range:

0–255

Default:

0

Description: Counts the number of rings that have occurred, up to a maximum of 255. It is

 

a read-only register and is seldom used in typical operation. 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 time the value reverts to zero.

S-Register:

S2

Function:

Escape Character

Unit:

Decimal ASCII code

Range:

0–127

Default:

43 (+)

Description: Specifies the character used by the TA to escape from data mode and return

 

to command mode.

S-Register:

S3

Function:

Carriage Return Character

Unit:

Decimal ASCII code

Range:

0–127

Default:

13 (^M)

Description: Specifies the character used by the TA to indicate the end of a command

 

line.

S-Register:

S4

Function:

Line Feed Character

Unit:

Decimal ASCII code

Range:

0–127

Default:

10 (^J)

Description: Specifies the character used by the TA to indicate the end of a status message.

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