Command Reference Guide

3Com Router 5000 Family and Router 6000 Family type ● 303
Command Reference
type
Purpose Use the type command to configure the analog E&M subscriber-line signal type.
Use the undo type command to cancel the existing setting.
Syntax type { 1 | 2 | 3 | 5 }
undo type
Purpose 1, 2, 3 and 5
Correspond respectively to the four signal types of
analog E&M subscriber-lines, that is, type 1, 2, 3 and 5.
Default By default, the analog E&M subscriber-line signal type is type 5.
Example Configure subscriber line 0/0/0 analog E&M subscriber-line type as type 3.
[Router-voice-line0/0/0] type 3
View This command can be used in the following views:
■ Voice Subscriber-Line view
Description This command is only applicable to the analog E&M subscriber-line.
Of the analog E&M signaling types, a PBX transmits signals on the M line (M means
Mouth, indicating it is transmitted from a PBX), and receives signals from E line (E
means Ear, indicating it is received by the PBX). So, as to a router that has voice
function, the router receives the M signal of the PBX, and transmits E signal to the
PBX.
The analog E&M subscriber-line has four data transmission (signal) lines, and two or
all the four lines are used according to different types:
E (“Ear” or “recEive”): the signal line from the router side to the PBX side.
M (“Mouth” or “transMit”): the signal line from the PBX side to the router side.
SG (Signal Ground): used for some types of analog E&M only.
SB (Signal Battery): used for some types of analog E&M only.