System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
G.703 module, codirectional
Page 9-26 Proprietary Information Aastra
9.9.6 G.703 module, codirectional
Interface data
Number of interfaces per module 2
Data lines in compliance with ITU-T G.703
Line port D2 4-wire, balanced
Impedance 120 Ohms, resistive
Reflection loss at 15 kHz to 150 kHz >16 dB
Signal code pseudo-ternary
Bit rate 64 kbit/s
Baud rate 256 kBauds
Pulse shape of the Tx signal at D2out approx. rectangle
Amplitude of the Tx signal at D2out (nominal
value) U
p0
1V ± 0.1V
Permissible attenuation of the Rx signal at D2in
referred to the Tx signal at D2out (128 kHz)
max. 3 dB
Unbalance loss at D2out from 10 kHz to 1 MHz
 30 dB
9.9.7 G.703 module, contradirectional
Interface data
Number of interface per module 2
Data lines in compliance with ITU-T G.703
Line port D2 4-wire, balanced
Impedance 120 Ohms, resistive rms
Reflection loss
from 1.6 kHz to 3.2 kHz
from 3.2 kHz to 64 kHz
from 64 kHz to 96 kHz
>12 dB
>18 dB
>14 dB
Signal code pseudo-ternary
Bit rate 64 kbit/s
Transmit signal pulse shape at D2out approx. rectangle
Transmit signal amplitude at D2out (nominal
value) U
p0
1V ± 0.1V
Permissible Rx signal attenuation at D2in referred
to the Tx signal at D2out (at 32 kHz)
max. 3 dB
Unbalance loss at D2out at 10 kHz to 1 MHz
 30 dB
Pulse width - data
Pulse width - clock
15.6 us
7.8 us
Table 9.J: DSK Modular