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Nortel Secure Router 8012
Hardware Description 4 Boards
Issue 5.3 (6 April 2009) Nortel Networks Inc. 4-35
Table 4-39 Description of the indicators on the front panel of POS optical interface modules
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.
4.10.3 Interface attributes
Table 4-40 shows the attributes of channelized and unchannelized POS optical interface
modules. The SFP optical module is configured separately and its attributes are shown in
Table 4-20.
Table 4-40 Attributes of channelized and unchannelized POS optical interface modules
Item Description
Rate 155 Mbit/s
Operating mode Unchannelized: 155 Mbit/s and full-duplex
Channelized: 63 E1 channels or 84 T1 channels
Applicable standard STM-1/OC-3c SONET/SDH
IETF RFC1619/1661/1662
Supported network protocol IP
Supported protocols PPP, HDLC, Frame Relay, and MFR (Only 1CPOS(E)
supports Frame Relay and MFR.)
4.11 HSSI interface module
The HSSI interface modules of the Secure Router 8012 are as follows:
z
1-port HSSI interface (1HSSI)
z
2-port HSSI interface (2HSSI)
4.11.1 Functions
The High Speed Serial Interface (HSSI) is connected by the HSSI cable. In the sending
direction, the IP data packet is encapsulated with PPP or HDLC and sent to the HSSI interface
line after being transmitted into electrical signals. In the receiving direction, data is
transmitted into the electrical signals and is processed with the HDLC frame. The device
extracts the IP data packet in the reverse process and forward the IP data packet.