Comtech EF Data SDM-9600 - Manual (Page 77)

Product Description
Memotec Inc. 5-15
5.9 E1/T1 Digital Interfaces
5.9.1 Ports
6 digital ports are built into front of the SDM-9606 blade.
Each port has:
• E1/T1 channelized digital interface, RJ-48 female connector
• Supports from 15 to 120 channels (timeslots), depending on the number of DSPs
installed. These channels support TRXs on a unit installed with the GSM A-bis/
ter licensed software option, or voice connections on a base unit in PowerCell
mode. Refer to
“Installing or Upgrading the DSP Modules” on page 4-4 for the
installation procedure.
• Two independent software configurable transceivers:
- T1 (DS1)/ISDN-PRI: Provides a 1.544 Mbps channelized digital connection
at 100 Ohms with up to 24 timeslots
- E1 (CEPT) PCM-30/ISDN-PRI: Provides a 2.048 Mbps channelized digital
connection with up to 32 timeslots, software selectable at 75 or 120 Ohms
For hardware strapping of an E1-75 port, refer to “Hardware Strapping for E1
Ports” on page 4-8 .
• Framing and line coding:
- T1: D4 or ESF framing and B8ZS, B7ZS or AMI line coding
- E1: G.704 framing and HDB3 line coding
• All ports are hard strapped as
NT
by default for connection to
TE
equipment. Use
a crossover cable where
TE
mode is required for connection to
NT
equipment.
• Add/drop capability with cross-connect: any incoming timeslot on any digital
port can be connected to any other timeslot on the same port, or any timeslot on
another digital port on the same blade or another blade installed in the same
SDM-9600 chassis.