DSX-1 telephony interface

Specification

ANSI T1.102, T1.403

Framing

D4, ESF

Insertion and extraction

ABCD bits

Line code

AMI

Zero bits

Selectable B8ZS, jammed bit (ZCS) or no zero code suppression

Alarm signal capabilities

Yellow and red

Counts

Bipolar violation, F(t) error, and CRC error

Robbed bit

Selectable on a per-trunk basis

Loopback

Per channel and overall under software control. Automatic remote loopback with CSU option.

Interfaces

Four trunks: Two Dialogic® MD1 RJ-45 interfaces, each with two trunks