System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
KZU SUB (8)
Aastra Proprietary Information Page 9-19
4-wire 600 Ohms 1)
2-wire 600 Ohms
2-wire complex
+6.7 dBm . . . –17.4 dBm
+7.5 dBm . . . –16.7 dBm
+5.1 dBm . . . –17.4 dBm
1) The module is designed so that an additional attenuation of 6 dB can be provided for each
channel.
Impedance F2in/F2out
600 Ohms switchable to
Z (220 Ohms + (820 Ohms//115 nF))
with DC isolation (up to 100 V)
Trans-hybrid loss
12 dB
Signalling 2 x E & M
Number of interfaces on the module 8
9.8.3 KZU SUB (8)
For 2-wire connections of CB subscribers to PBXs in conjunction with the KZU EX channel module.
Operation as extended subscriber: KZU SUB to KZU EX.
Operation as leased line: KZU SUB to KZU SUB.
The subscriber power supply and ringing circuit are integrated on the interface.
VF band 300 to 3,400 Hz
Interface 2-wire, to subscriber
Transmit direction (from telephone) with balancing network:
600 Ohms:
-10.5 dB to +6.4 dB,
adjustable in steps of 0.1 dB
Complex 220 Ohms + (820 Ohms // 115 nF)
DTAG:
-12.2 dB to +6.4 dB,
adjustable in steps of 0.1 dB
Complex 370 Ohm + (620 Ohms // 310 nF) BT:
-11.5 dB to +6.4 dB,
adjustable in steps of 0.1 dB
Receive direction (to telephone) with balancing network:
600 Ohms:
-17.4 dB to -0.6 dB,
adjustable in steps of 0.1 dB
Complex 220 Ohms + (820 Ohms // 115 nF)
DTAG:
-17.4 dB to +1.2 dB,
adjustable in steps of 0.1 dB
Complex 370 Ohms + (620 Ohms // 310 nF) BT:
-17.4 dB to +0.5 dB,
adjustable in steps of 0.1 dB
Nominal impedance
Impedance, complex
220 Ohms + (820 Ohms // 115 nF) DTAG
or
370 Ohms + (620 Ohms // 310 nF) BT
Impedance, resistive 600 Ohms (software-selectable)
Signalling Loop signalling or MFC
Meter pulse 12 or 16 kHz, 2 Vrms
Ringing frequency 16 2/3, 25 or 50 Hz
Ringing voltage 55 to 60 V
rms
Table 9.I: KZU channel modules