Table of Contents
Advertisement
Chapter 1. Introduction
HSSI Card
The optional HSSI card plugs into one of the three card slots on the
rear of the T3SU 300. With optional HSSI cards installed, the total
44.2 Mbps bandwidth of the T3 can be divided among the total
number of ports to provide multiple data channels over the T3. The
total bandwidth of the T3 can be divided among the available ports
in any fashion, as long as the divisions are on 75 kbps boundaries.
The HSSI card can be hot inserted or swapped. When it is inserted
in a slot on the rear panel and its faceplate is secured to the rear
panel of the T3SU 300 with the integral thumb screws, a PCMCIA
type connector on the card mates with a compatible connector on
the main board of the T3SU 300. A standard 50-pin HSSI connector
is then available for DTE connections. See the section DTE Port
Interface Card Slots on page 2-6 for more information on installing
option cards.
V.35 Card
The optional V.35 card plugs into the card slots on the rear of the
T3SU 300 to provide a V.35-type DTE interface. Operation of the
V.35 card is similar to that of the HSSI card except that the
maximum bandwidth of the V.35 card is limited to 10 Mbps.
Like the HSSI card, the V.35 card can be hot inserted or swapped,
and it installs just as the HSSI card does. Instead of the standard
HSSI connector, this card contains a standard 34-pin V.35 connector
for DTE connections. See the section DTE Port Interface Card Slots on
page 2-6 for more information on installing option cards.
Quad DSX-1 Card
The optional Quad DSX-1 interface card plugs into the card slots on
the rear of the T3SU 300. This card allows you to transport up to
four DSX-1 lines per card over the DS3 interface of the T3SU 300
along with high-speed data from the other HSSI/V.35 ports. This
configuration allows connectivity of both voice channels and high-
speed data channels for two point-to-point sites using only one
1-4
T3SU 300 User Manual
61200217L1-1
Advertisement
Table of Contents
