Installation
Connecting the Probe
58

In-Line HSSI Connection

Connecting the probe in-line requires that the connection between the Data
Terminating Equipment (DTE) and the Data Circuit- te rminating Equipment
(DCE) be momentarily broken. Installation requires the addition of a new HSSI
cable to the network configuration.
Use the following procedure to connect the HSSI WanProbe to monitor a HSSI
system with a momentary interruption to service:
1. Disconnect, at the DSU/CSU, the HSSI cable between the T3/ES DSU/CSU
and the LAN router.

Figure 3-11: HSSI Monitor In-Line Connection

WANNetworkEthernet
LAN
Router
HSSILAN
T3/E3
T3/E3
DSU/CSU
HSSI Out
In
Data
Clock Fault Fault
Data
Clock
Port 1 Port 2
To DTE From DCE
HSSI Interface