102
Interface cables and connection methods
For more information about T1 interface cables and connection methods, see "T1 interface."
HMIM-4FXS/HMIM-4FXO
Introduction
The 4-port voice subscriber circuit interface module (HMIM-4FXS) processes and transmits voice
signals for 2/4 regular analog phones, faxes, or AT0 loop trunks of telephone exchanges over data
communications networks.
The 4-port voice AT0 analog trunk interface module (HMIM-4FXO) processes and transmits voice
signals for 2/4 loops of telephone exchanges over data communications networks.
Interface specifications
Table 163 Interface specifications
Connector
RJ-45
Number of connectors
4
Cable
• Telephone cable with ferrite core
• E&M trunk cable (only for E&M modules, made on site)
Interface standard
• ITU Q.512-compliant subscriber circuit interface (HMIM-4FXS)
• ITU Q.552-compliant loop trunk interface (HMIM-4FXO)
• 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 119 HMIM-4FXS panel
Figure 120 HMIM-4FXO panel
Table 164 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 FXS/FXO interface cables and connection methods, see
"ADSL/BS/FXS/FXO/AM/FCM interface."