T1 CrossConnect Installation & Operation Manual
2 – Theory of Operation
Version 2
2-16
GatesAir
Intraplex Products
2.6 CrossConnect Server Configurations
In addition to the cross-connection capabilities described previously, the DCS-9560 and DCS-9565
CrossConnect Servers also provide local connections for time slot interfaces. The access or
multiplexing functions of the DCS-9560 and DCS-9565 operate similarly to the Intraplex Access Server
product line. The CrossConnect Server combines the functionality of the DCS-9500 CrossConnect
System with that of the Intraplex Access Server in a single cost and space-efficient unit.
Table 2-2. CrossConnect Servers and Functionally Equivalent Equipment
CrossConnect Server
Functional Equivalent
DCS-9560 CrossConnect Server
DCS-9500 CrossConnect System Plus
ACS-163 Terminal Multiplexer
DCS-9565 CrossConnect Server
DCS-9500 CrossConnect System Plus
ACS-165 Drop & Insert Multiplexer
The
T1 Access Server Installation and Operation Manual
discusses setting up the DCS-9560 and DCS-
9565 CrossConnect Servers.
2.6.1
DCS-9560 CrossConnect Server
The multiplexer part of a DCS-9560 serves as an interface between a single T1 “high-speed” circuit
and multiple voice and data “low-speed” circuits (Figure 2-14). Channel modules convert voice, data,
or audio signals into one or more 64,000 bit/second (64 Kbps) digital signals. These 64 Kbps signals
(also called “channels” or “time slots”) are then combined by time division multiplexing into a
1,536,000 bit/second (1.536 Mbps) signal, with an additional 8 Kbps for framing and overhead to
equal a T1 signal of 1.544 Mbps. The multiplexed voice, data, and audio circuits become payloads
within the T1 circuit.
Figure 2-14 shows a sample configuration. One port is used internally for connection to the CM-5
module. You can choose whichever port you want for this connection. In the figure, to the left of the
dotted line, the device configuration is treated as an Access Server configuration (
T1 Access Server
Installation and Operation Manual
(ACS-163)).
Figure 2-14. Terminal Multiplexer with DCS (Sample Configuration)
A single T1 circuit provides a total bit rate of 1.544 Mbps in each direction. Because the T1 signal
format includes 8 Kbps dedicated to frame synchronization, error detection, and other functions, the
actual T1 payload capacity is 1.536 Mbps, or 24 full-duplex, 64-Kbps time slots.
Summary of Contents for Intraplex T1 DCS-9500 CrossConnect System
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