Panasonic 324566-A User Manual
4 Boards
Nortel Secure Router 8012
Hardware Description
4-28
Nortel Networks Inc.
Issue 5.3 (6 April 2009)
Table 4-28 Description of the indicators of channelized and unchannelized E1/T1 interface
modules
modules
Indicator
State and significance
LINK
If the indicator is ON, the link is connected. If the indicator is OFF, the
link is disconnected.
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.
indicator is flashing, data is being transmitted or received.
0–3 (4E1/T1)
0–7 (8E1/T1)
E0–E15 (16E1/T1)
The indicators corresponding to the relevant
port number.
port number.
4.7.3 Interface attributes
Table 4-29 shows the attributes of the channelized and unchannelized E1/T1 interface module.
Table 4-29 Attributes of the channelized and unchannelized E1/T1 interface modules
Description
Attribute
4/8E1
4/8/16CE1
4/8CT1
16CT1
Connector type
z
DB-68 (4/8E1,4/8CE1 and 4/8CT1)
z
DB-78 (16CE1 and 16CT1)
Operating
mode
mode
E1
E1 and CE1
T1 and CT1
Transmission
rate
rate
z
In E1 mode: 2048 kbit/s
z
In CE1 mode: N x 64 kbit/s (N =
1 to 31)
1 to 31)
z
In T1 mode: 1544 kbit/s
z
In CT1 mode: N x 56 kbit/s and
N x 64 kbit/s (N = 1 to 24)
N x 64 kbit/s (N = 1 to 24)
Cable model
75 coaxial cable
120 shielded twisted pair cable
120 shielded twisted pair cable
120 shielded twisted pair cable
Maximum
transmission
distance
transmission
distance
75 coaxial cable: 0.5 km
120 shielded twisted pair cable 0.15
km
120 shielded twisted pair cable 0.15
km
0.15 km
Interface
standard
standard
ITU-T G.703 and ITU-T G.704
Supported
network
protocol
network
protocol
IP
Other
supported
protocols
supported
protocols
PPP, LAPB, X.25, Frame Relay, HDLC, and MP (16CE1/16CT1
supports PPP, HDLS, and MP.)
supports PPP, HDLS, and MP.)