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Interface cables and connection methods
For more information about E1 interface cables, see "E1 interface."
For more information about T1 interface cables, see "T1 interface."
E3/T3 interface module
• HMIM-1CE3
• HMIM-1CT3
• HMIM-1E3T3
HMIM-1CE3
Introduction
The 1-port channelized E3 interface module (HMIM-1CE3) provides the following features:
• Transmits, receives and handles one channel of E3 fast traffic, and provides access for E3
traffic when operating in E3 mode.
• Provides low-speed accessing service at n × 64 kbps when operating in CE3 mode. n is smaller
than or equal to 128.
E3 represents the tertiary group rate
(34.368 Mbps) of E system in the TDM
system. An E3 channel
can be channelized into 16 E1 lines through the demultiplexing processes of E23 and E12
. E
s both the E1 and CE1 modes. E23 is used to indicate either E2-to-E3 multiplex or
-to-E2 demultiplex, and E12 to indicate E1-to-E2 multiplex or E2-to-E1 demultiplex. "E23" and
"E12" discussed here represent the demultiplex process.
Interface specifications
Table 142 Interface specifications
Connector type SMB
Number of connectors 2
Interface standard G.703, G.704, and G.751
Interface rate 34.368 Mbps
Cable type E3/T3 cable (75-ohm coaxial cable)
Operating mode
E3
CE3
Supported services E3 leased line
Interface LEDs
Figure 108 HMIM-1CE3 panel
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