Command

Options

Function & Description

Ref.

Nn

n=0-3

Ring volume control.'N0' will

S24.0-1

 

3 *

 

disable the audio ring function

 

O

 

 

Return to on-line state

 

Pn

n=0-6

D channel protocol selection

S86

 

 

 

(USA) for American Version

 

 

P0

*

Northern Telecom proprietary

 

 

 

 

ISDN

 

 

P1

 

National ISDN 1 (1 SPID)

 

 

P2

 

National ISDN 1 (2 SPID)

 

 

P3

 

Reserved

 

 

P4

 

AT&T custom point-to-point

 

 

P5

 

AT&T custom point-to-multipoint

 

 

 

 

(1 SPID)

 

 

P6

 

AT&T custom point-to-multipoint

 

 

 

 

(2 SPID)

 

Qn

n=0-1

Result code displayed

S23.7

 

Q0

*

TA returns result code

 

 

Q1

 

TA does not return result code

 

Sr.b=n

 

 

Set bit 'b' of S-register 'r' to value

 

 

 

 

'n'. 'n' is a binary digit '0' or '1'

 

Sr.b?

 

 

Display value of bit 'b' of S-register

 

 

 

 

'r'

 

Sr=n

 

 

Set S-register 'r' to value 'n'. 'n' must

 

 

 

 

be a decimal number between 0 and

 

 

 

 

255.

 

Sr?

 

 

Display value stored in S-register

 

 

 

 

'r'.

 

SPIDr=nnn

 

 

User enters Service Profile ID

 

 

 

nnn… (SPID), for USA switches.

 

 

SPID0

First SPID number.

 

 

SPID1

Second SPID Number, if any.

 

SPID?

 

 

Display the SPID setting(s).

 

116 AT Command Set Reference

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ZyXEL Communications omni series user manual Isdn, SPID0, SPID1, Spid?