Specifications

Chapter 1 Overview D8E1T1 Installation and Operation Manual
1-4 D8E1T1 Module Specifications
1.3 D8E1T1 Module Specifications
Number of Ports
Eight
Data Rate per Port
E1 – 2.048 Mbps
T1 – 1.544 Mbps
Electrical Interface
ITU-T Rec. G.703
Framing
• CRC
• CAS
• SF (D4)
• ESF
Line Code
E1 – HDB3
T1 – AMI, B8ZS
Jitter Performance
Per ITU-T Rec. G.823; ETSI TBR 13
Pulse Shape
Per ITU-T Rec. G.703
Connector
50-pin RJ-48M connector on the rear interface
module, convertible to eight RJ-45 connectors via
an adaptor cable
Timing
• Receive timing recovered from incoming line
signal or received via the DSMC.2 module
• Transmit timing locked to the DXC-100 master
(Stratum 3) clock
Redundancy
Capability
Up to 10:1 when used with in a DXC-100 nest
configured with the DXC-100PSX N+1 Protection
Switch
Indicators
• READY (green/red): indicates the status of the
module set in general
• STATUS (red/green): indicates link status
separately for each of the E1/T1 links.
• TEST (yellow) indicates test status separately for
each of the E1/T1 links.
Timeslot
Allocation
• User-defined, any timeslot to any timeslot
mapping
Diagnostics
• Local and remote loopbacks on each module
port
• BER testing on each port
• Inband code activated loopback as per ANSI
T1E1.2/93-003