D-Link DMI-128ESU User Manual

D-LINK ISDN TA DMI-128ESU+

10. Supplementary Service Function

The supplementary services will require Analog phone having flash timing set to 600 msec.
(flash=600 msec). Check with your Telco (PTT) for supplementary service availability.
Follow the AT Command in Chapter 6 along with this procedure.

10.1 Definition

AT$CI1 Set inner communication enable

AT$CS1 No Network/Local supplementary service function provided

AT$CS2 Only Network supplementary service function provided

AT$CS3 Only Local supplementary service function provided

LIT

Local incoming
tone

♦ 400Hz tone

♦ 0.125sec on, 0.1sec off, 0.125sec on, 0.1sec off,

3.55sec off repeated

Busy tone

♦ 400Hz tone

♦ 0.5sec on, 0.5sec off continually

Dial tone

♦ 400Hz tone

♦ Continual

RBT

Ring-back tone

♦ Receive from Network ISDN switch

IRBT

Inner ring-back
tone

♦ 60ms on, 50ms off, 60ms on, 3250ms off,

repeated

♦ 400 HZ tone

Inner ring

♦ 25Hz ring signal

♦ When TA detects an inner communication and

sends ring signal to TEL-A/B by clicking the
ringing relay

♦ Ringing period is same as IRBT

ICR

Incoming ring

♦ 25Hz ring signal

♦ When TA accepts an incoming call and sends

ring signal to TEL-A/B/C by clicking the
ringing relay

♦ Ringing period is 1sec on, 2sec off repeated

Holding tone

♦ Send by Network ISDN switch

Waiting first dial digit time

♦ After TEL-A/B off hook, TA sends DT to TEL-

A/B

♦ If after 25 seconds TA did not receive any

dialing digit, TA send BT to POTS-A/B

Flash signal recognition time

♦ TA detects Flash-Hook signal from TEL-A/B

♦ Flash timing to be set to 600 msec on POTS

A/B for correct operation.

DMI-128ESU+

DMI 128 ESU+

ISDN