Comtech EF Data SDM-9220 - Manual (Page 96)

SDM-9220/9230 Hardware Installation Guide
5-18 Memotec Inc.
In addition, you must install a ferrite on each coaxial cable connected to
an E1-75 port on an SDM-9220 DC or SDM-9230 DC in all countries.
These ferrites are
not
provided with the product package. For instructions,
turn to “Installing the Ferrites (EMI Filters)” on page 4-26 .
• 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 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 another slot.