Specifications

2-8
Reference Guide
Model No.
Running Head
Data Modules and Applications Applications
2.4 Data Modules and Applications
This integrated access system supports multiple user cards for transport of digital data.
2.4.1 HSU Card
The HSU card allows the connection of high speed data terminal equipment (DTE) and data
communications equipment (DCE) to WAN links, server cards (ADPCM) or another HSU
card. The HSU card also provides low or mid-density connectivity for local, synchronous
peripherals such as, LAN Bridge/Routers and legacy SNA/SDLC devices. Additionally, these
high speed data cards also provide broadcast functionality for point to multi-point operation
suitable for applications such as video conferencing. When used in conjunction with an 8840
PRI Server Card, the HSU card can be used to provide switched data application functionality.
(i.e. telephone call centers). All HSU cards can be installed in any of the User Slots in an
Integrated Access System chassis.
The various models of the HSU Card are as follows:
•
8202 HSU card supports two RS530/RS449 data ports. It can also support V.35 and
RS232 data through the use of the appropriate Personality module. Personality modules
can be intermixed on the same RS530 card.
•
The 8203 HSU Trunk Card supports two V.11/X.21 data ports The ports may be
configured as user ports, or can be used as externally clocked network interface ports.
•
The 8212 HSU card supports two V.35 synchronous data ports.
•
The 8213 HSU Card provides two ports. Each port can be individually configured to
support RS530 or V.35 devices. The 8213 also supports V.25bis dialing commands (an
in-band dialing protocol) and RS366 dialing through the use of separate DB-15 pin
RS366 port connectors on the rear of the card. The 8213 also has a proprietary in-band
performance monitoring system.
•
The 8214 HSU card supports two (2) V.35 synchronous data ports. The ports may be
configured as user ports, or can be used as externally clocked network interface ports.
•
The 8215 HSU card provides four ports which can be individually configured to support
RS530, RS449/422, and V.35. devices.
•
The 8216 HSU card provides four-ports which support four EIA530/A or V.35 data ports.
The selection EIA530, EIA530A, or V.35 is made on a port-by-port basis using on-board
switches.
Each port on a HSU can be independently configured to operate at speeds of Nx56 or Nx64
Kbps, where N equals 1 to 24 in T1 mode or 1 to 31 in E1 mode. In addition to the data rate,
each synchronous port’s Transmit Clock can be programmed for Internal or External modes
and both the Clock and Data Polarity may be inverted through software. The External
Transmit Clock mode and the Inverted Clock Polarity mode may be useful in ensuring that
both the Transmit Clock and the Transmit Data are in sync when they reach the HSU port. This