6763 Common Communication ServerNet Adapter Installation and Support Guide

Glossary
6763 Common Communication ServerNet Adapter Installation and Support Guide—522309-005
Glossary-4
SS7TE
SS7TE. A plug-in card (PIC) for the 6763 Common Communications ServerNet adapter that
provides support for the EIA-449, V.35, X.21, EIA-232 interfaces. Replaced by the
SS7TE1 PIC.
SS7TE1. A plug-in card (PIC) for the 6763 Common Communications ServerNet adapter
that provides support for the EIA-449, V.35, X.21, EIA-232 interfaces. Replaced the
SS7TE PIC.
SS7TE2. A plug-in card (PIC) for the 6763 Common Communications ServerNet adapter
that provides support for the DS0 level T1, E1, or J1 interfaces.
SS7TE3. A plug-in card (PIC) for the 6763 Common Communications ServerNet adapter.
There are two versions of the SS7TE3 PIC. The older version provides support for the
10Base-T and 100Base-T Ethernet interfaces. The newer version provides support for
the 10Base-T and 100Base-T Ethernet and for the DS1 level T1, E1, or J1 interfaces.
T1. A 1.544 Mbps, point-to-point, dedicated, digital circuit provided by the telephone
companies. The monthly cost is typically based on distance. T1 lines are widely used
for private networks as well as interconnections between an organization's PBX or LAN
and the telco.
T1 line uses two wire pairs (one for transmit, one for receive) and time division
multiplexing (TDM) to interleave 24 64-Kbps voice or data channels. The standard T1
frame is 193 bits long, which holds 24 8-bit voice samples and one synchronization bit
with 8,000 frames transmitted per second. T1 is not restricted to digital voice or to 64
Kbps data streams. Channels may be combined and the total 1.544 Mbps capacity can
be broken up as required.
V.35. A CCITT specification defining the interchange circuits between data terminal
equipment and data circuit-terminating equipment at data rates of 48 kilobits per
second.
X.21. A CCITT recommendation for a general-purpose interface between data terminal
equipment and data circuit-terminating equipment for synchronous operations on a
public data network.