Specifications

SPS-6, SPS-12 Overview 1-1
Chapter 1
Introduction
1.1 Overview
The SPS-6, SPS-12 Multiprotocol FRAD/Switches provide easy, cost-effective
access to a packet switching network. They also provide packet switching
capability for both X.25 and Frame Relay.
SPS-6, SPS-12 has six or twelve ports, respectively, which support aggregate data
rates up to 2 Mbps (for each three ports). Each port can be configured to any of
the following protocols: X.25, Frame Relay, HDLC, STM, Async, SDLC or SLIP.
Switching between ports is provided for X.25, Frame Relay, SDLC and
encapsulated protocols.
Two asynchronous channels are available with each module. The asynchronous
channels can only be configured as X.28.
The synchronous ports can be V.24, V.35, X.21 and RS-530. Links 1 and 2 (and 7
and 8 for SPS12) can be ISDN-S, IR-ETH, U-INT, DDS or CSU/DSU. Interfaces for
all ports can be DCE or DTE layer 1 (user-configurable). In the SPS-6, ports 1 and 2
can operate as one DDS, Ethernet or ISDN (2B channels) port. The same applies
for ports 7 and 8 in the SPS-12.
SPS-6, SPS-12 support a wide range of applications. For more information on the
SPS-6, SPS-12 applications and features, refer to the RAD Packet Switching
Applications Guide.