Western multiplex Lynx 2xE1 - AUX DATA (Digital Service Channel) Connection

INSTALLATION AND MAINTENANCE MANUAL
LYNX E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
PAGE 3-86 SECTION 3: INSTALLATION & ADJUSTMENTS
3.14.43.14.4 AUX DATA (Digital Service Channel) ConnectionAUX DATA (Digital Service Channel) Connection
The AUX DATA port is a separate wayside serial port which can be configured to allow the
connection of any user serial data (to 9600 baud) through the radio network. In the default
configuration, this service channel is “bridged” to the diagnostics port, providing TBOS network
management for far-end radios including radio network management through repeaters and hubs.
Connection to the AUX DATA port is an RS-232 or RS-422 serial interface, identical to the
diagnostics port (see Section 3.14.3). This port does not affect the E1 traffic on the Lynx radio.
For TBOS network management, or when the AUX DATA port is used as a clear service channel,
co-located radios can be wired to one another to provide the information throughout the network. At
a repeater or hub location, bridging is accomplished by cable connections between co-located Lynx
radios, via their AUX DATA ports, as shown in Figure 3-25 and 3-26. Figure 3-27 illustrates the pin-
to-pin connections for this configuration. There is a related DIP switch position, as shown in Figure
3-27, that makes the AUX DATA port usable for customer data instead of the TBOS network
management information. The factory default setting for this DIP switch is for TBOS network
management.
For non-TBOS external site management systems can be used with the Lynx radios; Figure 3-26
shows a typical application. Here the reporting relies on external devices to communicate over the
clear service channel of the Lynx radio. Each radio is given a site location (see Section 3.14.1) and
information on the radio status and control is fed through the diagnostic port to a remote terminal
unit (RTU). These RTUs have the capability of providing for other external inputs at the remote site,
for complete network management. Communication from each RTU is fed via the RS-232 port to the
AUX DATA connector on the radio, in this configuration no bridging is required.
RTUs that do not support TBOS can alternatively connect to the
Lynx alarm connector for discreet TTL alarms and/or test point
voltages.
If you are using TBOS network management and want full
information on the far-end radio (even in a single-hop
application), the bridge function must be enabled.
The service channel can only be used for TBOS network
management or for Aux data, not both. When selected for
TBOS, no other data should be connected to the AUX DATA
port.