A P P E N D I X F

S P E C I F I C A T I O N S

PSTN Analogue Telephone Line Interface:

Line Type

Loop Start

Line Impedance

BT SIN 315 for Terminal Impedance [UK]

 

ETSI TBR21 [Ireland]

 

(options for 600 ohms, 900 ohms and TBR 21)

Ringing Detection

25 Hz

Connector Type

RJ-11 (2 wire telephone cable with BT style plug pro-

 

vided for use in UK)

Caller ID Support

All Lines

Caller ID Alert

LR+DT-AS and RP-AS

Caller ID data

V.23

Distinctive Ring Support

Yes

 

# 1: one burst per ring cycle

 

# 2: three bursts per ring cycle

Extension Interface

 

Loop range

600 ohms

On hook/Off hook voltage

35 V

Ringing voltage

90 V rms

Ringing frequency

25 Hz

Connector type

RJ-11, 2 pin

Extension Impedance

BT SIN 315 for Network Impedance [UK]

 

ETSI TBR21 [Ireland}

Signaling type

DTMF only

A P P E N D I X F

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Talkswitch CT.TS005.001101.UK manual Pstn Analogue Telephone Line Interface, Extension Interface