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HMIM-4E&M
Introduction
The 4-port voice E&M analog trunk interface module (HMIM-4E&M) provides and transmits voice
signals for 4 E&M analog trunks over data communications networks.
Interface specifications
Table 165 Interface specifications
Connector
RJ-45
Number of connectors
4
Cable type
• Telephone cable with ferrite core
• E&M trunk cable (only for E&M modules, made on site)
Interface standard
• G.712-compliant E&M trunk interface (HMIM-4E&M), E&M interface
(supporting Bell type I, II, III, V, and support 2-wire and 4-wire)
• ITU K.20-compliant over-current and over-voltage protection
Dial-up mode
DTMF, compliant with GB3378 (Pulse dial-up is not available.)
Bandwidth
300 Hz to 3400 Hz
Interface LEDs
Figure 121 HMIM-4E&M panel
Table 166 LED description
LINK
• On means a link is present.
• Off means no link is present.
ACT
• On means there is call activity.
• Off means the channel is idle.
Interface cables and connection methods
For more information about E&M interface cables and connection methods, see "E&M interface."
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