Filter
Top Products
PRI Card User Guide
2 CommPlete Communications Server
Introduction
The Multi-Tech PRI Card (MTPRI-HD23B for T1 or MTPRI-HD30B for E1) is a telecommunications
interface card that provides CommPlete interconnectivity to Primary Rate ISDN (PRI) public switched
telecommunications networks. The MTPRI-HD23 provides 23 B channels that provide 23 user sessions.
The MTPRI-HD30 provides 30 B channels for 30 user sessions. The PRI card directly connects a
CommPlete to a T1 or E1 circuit without the need for an external T1 channel bank or T1 channel service
unit (CSU).
The PRI card operates as an ISDN PRI card, or as an E1 or T1 card for long-haul or short-haul applications,
using 22 AWG (0.63 mm) twisted-pair wires at up to 6000 feet (0-2 km).
This manual provides information used to install, test and troubleshoot your Multi-Tech PRI card.
Product Description
The PRI card has one RJ48C connector for a LEC line connection and 10 status LEDs. It provides
intelligent support for the ISDN B and D circuits, performing all of the call setup, management, and tear-
down functions on-board. The PRI card can establish and manage separate B channel connections at 64K
bps, or it can aggregate two or more B channels for an Nx64K bps logical connection. The PRI card offers a
variety of user-definable connection modes, allowing either static or dynamic bandwidth-on-demand
operation. It performs all call management as well as full-duplex DMA processing on each channelized
data stream. Logical channel protocols are configurable for PPP, or Multilink PPP link-level protocols, or
raw (unframed) data mode.
The 16-bit interface ensures maximum performance for the most demanding data-intensive applications.
In addition, 8-bit transfers are also supported. There are no restrictions imposed on alignment during
data transfers. The on-board firmware resides in an 8 bit wide 512K byte Flash ROM.
Features
The PRI card provides the following features:
• Extensive selection of Extended mode and Expanded mode memory addressing
• ISDN BRI
• supports PPP and Multilink PPP (MLPPP) Link Level Protocols
• extensive statistics reporting (link level and call management)
• extensive status LED monitoring of Faults, LEC circuit, and host interface activity
• support of PRI ISDN, Q.921, Q.931, and NI-2 compliant LEC circuits
• support of AT&T, MCI (and other) Multi-Rate Bearer services
• compatible with AT&T 4ESS and 5ESS, NT DMS-100 and DMS-250 switches
• multiple simultaneous remote connections at N x 64K bps bandwidth on demand
Status LEDs
The PRI card contains 10 status LEDs on the front panel. The front panel is shown in Figure 1 and each
LED is described in the following listing.