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127Appendices
Appendix G - Specifications
EE
EE
xx
xx
tt
tt
ee
ee
nn
nn
ss
ss
ii
ii
oo
oo
nn
nn
II
II
nn
nn
tt
tt
ee
ee
rr
rr
ff
ff
aa
aa
cc
cc
ee
ee
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
CC
CC
..
..
OO
OO
..
..
II
II
nn
nn
tt
tt
ee
ee
rr
rr
ff
ff
aa
aa
cc
cc
ee
ee
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
SS
yy
yy
ss
ss
tt
tt
ee
ee
mm
mm
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