Zhone IMACS 8000, User Manual

Page: 361 / 788

Voice Cards 11-1
E&M Card Introduction
Chapter 11
Voice Cards
E&M Card
11.1 Introduction
This chapter provides switch settings, connector pinouts, configuration, and troubleshooting
information for the E&M Voice Cards. These cards are identified as the E&M 2W*8
(EM-2W-8P) and E&M 4W*8ER (EM-4W-8P) on their faceplate ejectors.
The E&M cards manage the flow of toll-grade voice traffic through the integrated access
system. Each card encodes an analog (voice, VF) signal to a digital bitstream at the local
integrated access system for transmission over a T1 or E1 network. Each card also decodes
the digital signal to analog at the remote system. Both cards support E&M signaling types I,
II, IV, and V.
Each card connects to eight CPE voice circuits from a PBX or other user facility. Normal
E&M, Transmission-Only, and E&M R2 signaling are supported. The E&M cards also can use
the voice compression features of an ADPCM card.
11.2 E&M Card Descriptions
11.2.1 E&M 2W*8 Card Description (8000-EM-2W-8P)
The E&M 2W*8 card has eight voice ports, each with 600-ohm terminating impedance.
Notice!
UL STATEMENT
OPERATION OF THIS INTERFACE IS LIMITED TO INTRA-BUILDING
CONNECTIONS ONLY