SDM-9XXX Series Hardware Installation Guide
4-22 Memotec Inc.
T1/E1 Interface Cards
Ordering part numbers for SDM-9220/9230:
161-1032-001 for the single port interface card
161-1032-002 for the dual port interface card.
Ordering part numbers for SDM-9120:
161-1332-001 for the single port interface card
161-1332-002 for the dual port interface card.
• Single port interface with one RJ-48 female connector
• Dual port interface with two RJ-48 female connectors
• 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
An E1-75 connection requires an RJ-48 to E1-75 dual BNC adaptor cable
(Ordering part number: 161-0469-001) and two jumpers for each port. Refer
to “T1/E1 Interface Cards at 75 Ohms” on page 4-24, and “E1-75 Jumpers”
on page 3-13.
• Framing and line coding:
- T1: D4 or ESF framing and B8ZS, B7ZS or AMI line coding
- E1: Provides 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
NOTE: Requires a DSP-160 or HD DSP module for voice calls (see “Installing or
Upgrading the DSP Module” on page 3-5).
• 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 another slot.
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