Talkswitch 48 User Manual
Page 124
127
Appendices
Appendix G - Specifications
EE
E
Exxxxtttteee
en
n
n
nssssiiiio
o
o
on
n
n
n IIIIn
n
n
ntttteee
errrrffffa
a
a
acccceee
e
Loop range
0 to 600 ohms
On hook voltage
35 volts
Off hook loop voltage source
35 volts
Off hook loop current
23 to 40 mA
Ringing voltage
90 volts RMS
Ringing frequency
20 Hz - True Sine wave
Total supported ringing load
5 REN
Trunk type
Loop start
Connector type
RJ-11, 2 pin
Interface impedance
600 ohms
Dial tone level
-2.4 dBm
Signaling type
DTMF only
Flash hook supported
Yes
C
C
C
C....O
O
O
O.... IIIIn
n
n
ntttteee
errrrffffa
a
a
acccceee
e
Interface impedance
600 ohms
Trunk type
Loop start
Connector type
RJ-11, 4-pin
Ringing impedance
3,900 ohms
Ringing sensitivity
45 volts RMS @ 20Hz
REN
1.8
Longitudinal balance
69 dB
Signal level
- 10 dB
Caller ID support
All lines
Distinctive ring supported
Yes
SS
S
Syyyysssstttteee
em
m
m
m
C.O. interfaces
2 / 4*
Extension interfaces
4 / 8*
RS-232, 9 pin interface
1
USB interface
1
LAN interface
Ethernet (10BaseT)
Memory expansion*
8, 16, 32, 64 MB
TalkSwitch Memory Cards
TS-user manual 7th ED v3 Release.qxd 8/27/02 4:57 PM Page 127