Comtech EF Data SDM-9220 - Manual (Page 98)

SDM-9220/9230 Hardware Installation Guide
5-20 Memotec Inc.
T1/E1 Interface Cards at 75 Ohms
Ordering part numbers:
161-1032-001
(single port interface card) or
161-1032-002
(dual port interface card) with
AG2CA0001 (RJ-48 to dual BNC cable)
• Supports digital voice/data at 75 Ohms
• Provides a 2.048 Mbps channelized digital connection with up to 32 timeslots
• Single port interface with one RJ-48 female connector
• Dual port interface with two RJ-48 female connectors
• RJ-48 to E1-75 dual BNC adaptor cable provides an E1-75 connection
CAUTION:
:
To prevent electromagnetic interference, you must also
strap 2 jumpers for each port that will be used as an E1-75 connection.
For details and installation procedure, refer to
“E1-75 Jumpers” on
page 4-14 .
• G.704 framing and HDB3 line coding
• Maximum 3 interface cards per unit, providing a maximum of 120 voice chan-
nels or 124 data channels
Requires a DSP-160 or HD DSP module for voice calls (see “Installing or
Upgrading the DSP Module” on page 4-5 ). The HD DSP is required for GSM
support.
• Interoperability with other channelized digital interface cards:
- Can be installed and operated on a unit that has one or more single/dual port
T1/E1, ISDN-BRI S/T, or legacy E1 interface cards installed in the other slots.
- Cannot be installed on a unit that has one or more legacy T1 interface
cards installed in the other slots.
Workaround:
Substitute a dual port T1/E1 interface card for the T1 interface,
and configure it for T1 operations.
• E1 operations are indicated when the T1-E1 LED is yellow (see Figure 5-11 ). To
interpret the other status LEDs, see “Interface Card Status LEDs” on page 5-23 .
NOTE: You must install a ferrite on each coaxial cable connected to an RJ48 to
BNC cable associated with a T1/E1 interface card on an SDM-9220 UAC,
SDM-9220 DC, SDM-9230 UAC or SDM-9230 DC.
These ferrites are
not
provided with the product package. For instructions,
turn to “Installing the Ferrites (EMI Filters)” on page 4-26 .