Router User Manual

4 Boards
Nortel Secure Router 8012
Hardware Description
4-36 Nortel Networks Inc. Issue 5.3 (6 April 2009)
The Secure Router 8012 with HSSI can be connected to the DCE equipment (CSU/DSU) as
the DTE equipment, or it can be connected with the DTE equipment back-to-back.
The functions of interface are as follows:
z
The HSSI interface level is ECL. The highest rate is 52 Mbit/s and the maximum
transmission distance is 50 inches (15 m).
z
HSSI supports two loop working modes: the physical chip self-loop and the line
self-loop.
z
The interface supports many link layer protocols, such as PPP and HDLC.
z
The interface supports auto-identification of DTE and DCE and chooses the clock
automatically.
4.11.2 Front panel
Table 4-41 shows the appearance of the HSSI interface module.
Table 4-41 Description of the HSSI front panel
Silkscreen Appearance of the front panel
1HSSI
2HSSI
Table 4-42 describes the indicators of the HSSI interface module.
Table 4-42 Description of the indicators of the HSSI front panel
Indicator State and significance
LINK If the indicator is ON, the link is connected. If the indicator is OFF, the link is
disconnected.
ACT If the indicator is OFF, no data is being transmitted or received. If the
indicator is flashing, data is being transmitted or received.
4.11.3 Interface attributes
Table 4-43 shows the attributes of the HSSI interface module.