Command Reference Guide

3Com Router 5000 Family and Router 6000 Family trunk-direction ● 297
Command Reference
trunk-direction
Purpose Use the trunk-direction command to configure the E1 trunk direction.
Use the undo trunk-direction command to restore the default value.
Syntax trunk-direction timeslots timeslots-list { in | out | dual }
undo trunk-direction timeslots timeslots-list
Parameters timeslots-list
Specify the range of trunk timeslot. The expression
includes the single digit, two digits separated by “,”, a
pair of digits separated by “-”, or the combination
form (e.g., 1-14, 15, 17-31). The value range of digits
is the integer from 1 to 31.
in
Indicate the trunk is the incoming trunk.
out
Indicate the trunk is the outgoing trunk.
dual
Indicate the trunk is the bidirectional trunk.
Default By default, configure the bidirectional trunk.
Example Configure the trunk direction as bidirectional trunk for timeslot set 5 on E1 port 1/0/0.
[Router-cas1/0/0:5] trunk-direction timeslots 1-31 dual
View This command can be used in the following views:
■ R2 CAS view
Description Use the trunk-direction command to configure the E1 trunk direction.
Use the undo trunk-direction command to restore the default value.
This command applies to E1 voice only.
When configuring the E1 trunk direction as incoming trunk, this trunk will not load
any outgoing call. When configuring the E1 trunk direction as outgoing trunk, this
trunk can only be used for the outgoing call and not for incoming call. When
configuring it as bidirectional trunk, it can load the outgoing call and incoming call
respectively according to the initiative of originating call.
To keep the E1 communication appropriate, if the E1 trunk adopts the mode of
incoming trunk or outgoing trunk, then one end of it must be ensured as incoming
and other as outgoing, or the connection will fail. If both ends of E1 trunk adopt the
bidirection mode, it is required to use the command of
select-mode to adjust the