Western multiplex Lynx 2xE1 - Protect Port Connection (this Port Is for Factory Use Only)

INSTALLATION AND MAINTENANCE MANUAL
E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
SECTION 2: PRODUCT DESCRIPTION PAGE 3-89
3.14.5 Protect Port Connection (This port is for factory use only)
For monitored hot-standby protection, see Protection Switch Manual
available on Western Multiplex FTP site.
Monitored Hot Standby (MHS) protection can be established on all Lynx E1 and multi-E1 radios
using two identical Lynx radios and one Protection Switch at each site. For the Lynx radios, this is
accomplished by connecting the antenna and E1 connections to the Protection Switch unit, and
then connecting the Protection Switch unit to two separate and identical Lynx or radios. The
Protection Switch unit provides the capability to switch between connected Lynx radios in case of a
radio hardware failure. There is an interruption in radio traffic when this switching occurs, however,
radios are typically able to re-synchronize and establish communications in a 2-3 seconds
(depending on path length and path availability). A typical MHS configuration is shown in Figure 3-
29.
Figure 3Figure 3-- 29: MHS29: MHS Configuration Configuration
Lynx A
Protection Switch
Lynx B
Lynx A
Protection Switch
Lynx B
Radio A and Radio B
Identical