Specifications

Overview 1-1
Chapter 1
Introduction
1.1 Overview
This manual describes the technical characteristics, applications, installation and
operation of the HS-R four-channel V.110 data modules for the Megaplex-2100
and Megaplex-2104 family of modular E1/T1 multiplexers.
In this manual, the generic term Megaplex is used when the information is
applicable to both chassis versions. The complete designation is used only for
information applicable to a specific version.
Applications
The HS-R modules provide four independent RS-232 channels that support full
duplex asynchronous and synchronous data transmission in the range of 0.6
through 64 kbps.
The HS-R modules perform rate adaptation in accordance with ITU-T Rec. V.110;
multiplexing is performed in accordance with ITU-T Rec. I.460. In addition, the
main link data stream generated by the HS-R module is compatible with the data
stream generated by the ASM-31 and ASMi-31 modems, offered by RAD.
Figure 1-1 shows a typical low-speed data transmission application using HS-R
modules. In this application, two HS-R modules are used to connect remote
terminals to a server or communication controller through the Megaplex link. The
HS-R modules enable efficient utilization of link bandwidth; for example, the HS-R
modules enable the transmission of four 9.6 kbps channels in one 64 kbps timeslot
(see Section 1.3 for additional details).
Note