System information

Using the Internal Modem 7-17

COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED

Writer: Carey Gregg Saved by: Carey Gregg Saved date: 09/23/98 1:05 PM

Part Number: 316216-003 File name: Ch07.doc

S Register Command Summary

S89 Sleep Mode Timer.

S90 Read-only Local Phone.

Advanced Voice Commands

Command Description

S32 Synthetic Ring Volume.

S33 Synthetic Ring Frequency.

Audio Response Codes

The modem alerts the DTE to the presence of tones detected on

the phone line. During a voice call, the modem is capable of

simultaneously detecting tones other than voice. When such a tone

is detected, the modem responds via the communications interface

with one of the following response codes:

Audio Response Codes

Code Description

0-9, A-D,#,* DTMF Tones

a Answer Tone

b Busy Tone

c Fax Calling Tone

d Dial Tone

e Data Calling Tone

h Local Phone On-Hook

H Local Phone Off-Hook

R Ring

r Ringback

s Silence Timer Has Expired

@ CAS Tone Detected