3Com MSR 30, MSR 20, MSR 50 Interface cable of FXS/FXO modules, Interface cable of E&M modules

114CHAPTER 3: MULTIFUNCTIONAL INTERFACE MODULES

Figure 129 MIM-4E&M panel

	LINK
	ACT
Table 74 Description of the LEDs on voice MIM panels
LED	Description
LINK	OFF means no link is present; ON
	means a link is present.
ACT	OFF means the channel is idle. ON
	means there is call activity.

Interface Cable

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■RJ-45 receptacles are used as external interfaces for FXS/FXO/E&M modules.

■Telephone cables have been included in the standard shipment package of MIM-2FXS/MIM-2FXO and MIM-4FXS/MIM-4FXO modules.

Interface cable of FXS/FXO modules

Connection cables for MIM-2FXS/MIM-2FXO and MIM-4FXS/MIM-4FXO are telephone cables with ferrite core. For cable pinouts, see Low-End and Mid-Range Series Routers Cable Manual.

Interface cable of E&M modules

E&M modules of H3C Series Routers support Bell I, II, III, V switches, and 2-wire & 4-wire voice signals.

It is recommended to use Bell V 4-wire voice signal to communicate with the Router in practice.

The sequence of E&M RJ-45 pins is shown in the following figure, numbered 1 to

8 from left to right:

Figure 130 Sequence of RJ-45 pins

When connection is made in Bell V 4-wire mode, the pinouts of RJ-45 receptacles at router side and at the switch side are shown in the following figure: