3Com Router Module Guide
Chapter 3 Multifunctional Interface Modules
3-3
Attribute Description
the actual needs at the site.)
Interface standard
ITU Q.512-compliant subscriber circuit interface (Router 2-Port FXS)
ITU Q.552-comliant loop trunk interface (Router 2 or 4-Port FXO)
G.712-compliant E&M trunk interface (Router 2 or 4 -Port E&M), E&M
interface (supporting Bell type I, II, III, V, and support 2-wire and 4-wire).
ITU K.20-compliant overcurrent and overvoltage protection
Dial-up mode
DTMF (Dual-Tone Multi-Frequency) but not pulse dial-up
Bandwidth
300 to 3400 Hz
3.1.4 Interface LEDs
Voice MIM panels are shown in the following figures:
ACT
LINK
Figure 3-3
Router 2-Port FXS panel
ACT
LINK
Figure 3-4
2 Router 2-Port FXO panel
ACT
LINK
Figure 3-5
Router 2-Port E&M panel
ACT
LINK
Figure 3-6
Router 4-Port FXS panel