User`s guide

A-2 DL600E E1 Data Multiplexer UserÕs Guide
Technical SpeciÞcations
E1 Electrical Network Interface
Transmit line rate 2.048Mb/s ±50ppm
Receive line rate 2.048Mb/s ±75ppm
Line code HDB3
Framing ITU-TS G.704
Input signal 0 to 20 dB
Output signal ITU-TS G.703
Electrical ITU-TS G.703
Impedance 75W (BNC) unbalanced or 120W (DA-15) balanced
E1 AUX Interface (optional)
Transmit line rate 2.048Mb/s ±50ppm
Receive line rate 2.048Mb/s ±75ppm
Line code HDB3
Data Rates Nx64kbps (n=1 through 31)
Framing ITU-TS G.704
Input signal 0 to -7 dB0
Impedance 75W (BNC) unbalanced or 120W (DA-15) balanced
Interference immunity ITU-TS G.703
Data Interface
Number of ports 2 or 4
Interface types V.35, X.21
Data rates N x 64Kb/s (N = 1 through 31)
System Timing Requirements
Network
Internal
E1 Aux Port
Any Data Port via the SCTE (TT) line
External (Nx64 kHz or 1544 kHz)
Ext. Timing Connector, 75 Ohm BNC connector (TTL levels)