Command Reference Guide

314 ● vofr 3Com Router 5000 Family and Router 6000 Family
Command Reference
vofr
Purpose Use the vofr command to enable VoFR operation mode for a DLCI.
Use the undo vofr command to disable VoFR operation mode for the DLCI.
Syntax vofr { 3Com-switch [ dte | dce ] | motorola-compatible [ dte | dce ] |
nonstandard-compatible signal-channel ccid-no data-channel dcid-no [
keepalive ] }
undo vofr
Parameters signal-channel ccid-no
data-channel dcid-no
Indicates that VoFR works in nonstandard-compatible
mode and specifies FRF.11 sub-channels for signaling
and data. The subchannel is in the range 4 to 255.
keepalive
Indicates whether the keepalive message will be
regularly sent. In Non-standard-compatible mode, the
keepalive message is regularly sent to monitor the
control subchannel status. If the keepalive argument is
configured, one end will assume that congestion has
occurred to the network if no keepalive message is
received for a certain period. The active call control
subchannel will be deactivated, and thus voice call can
no longer be set up. If the argument is not configured,
the status of the control subchannel is synchronous to
the PVC status.
3Com-switch
Adopts 3Com private mode.
motorola-compatible
Adopts Motorola-compatible mode for compatibility
with VoFR of Motorola routers.
nonstandard-compatible
Adopts nonstandard-compatible mode for
compatibility with VoFR of Cisco routers.
dte
Annex G control block works as DTE.
dce
Annex G control block works as DCE.
Default By default, VoFR is not supported.
Example Specify voice calling on DLCI 100 to nonstandard-compatible, call control signaling
subchannel “ccid” to 4, data subchannel dcid to 5 and keepalive messages to be sent
timely.
[Router-fr-dlci-Serial1/0/0-100] vofr Nonstandard-compatible
signal-channel 5 data 4 keepalive
Specify voice call mode on dlci 200 to 3Com-switch (DTE).
[Router-fr-dlci-Serial1/0/0-100] vofr 3Com-switch