System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Port nx64
Aastra Proprietary Information Page 9-15
Cable Balanced conductor pair
Table 9.G: Port nx64
9.7.2.4 Port nx64
General
Data bit rate
N x 64 kbit/s, where N=1 to 31
64, 128, 192 . . . . 1984 kbit/s
Transmission of control line
In 64 kbit/s channel or in service digits of PCM
frame
V.11 interface data
Interface definition to ITU-T X.21
Electrical characteristics to ITU-T X.27/V.11
Plug connector 15-pin (female) trapezoidal connector (DÜE)
Electrical interface V.11
Transmitter:
Output impedance < 50 Ohms
Output short-circuit current < 150 mA
Output voltage at log. "1" or OFF, idle run 3.5 V < U < 5.0 V
Receiver:
Input impedance
150 Ohms, 600 Ohms and highly resistive
(approx. 5 kOhms), switchable by means of
straps or slide switch
Input differential voltage < 300 mV
Voltages for control and clock lines
OFF
 -0.3 V
ON
 +0.3 V
Voltages for data lines
Binary value “1“
 -0.3 V
Binary value “0“
 +0.3 V
Line lengths (terminated line) between 50 m (n=31) and 1000 m (n=1)
Interface lines
Table 9.F: 34 Mbit/s interfaces
R (A)
R (B)
T (A)
T (B)
S (A)
S (B)
I (A)
I (B)
C (A)
C (B)
Receive data
Transmit data
Bit clock
Indicate
Control