R2511-HP MSR Router Series Voice Command Reference(V5)

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Parameters
huawei-compatible: Adopts the Huawei-compatible mode.
motorola-compatible: Adopts the Motorola-compatible mode for compatibility with VoFR of Motorola
routers. The FRF.11 trunk mode does not support the Motorola-compatible protocol.
dce: Specifies the virtual circuit to serve as a DCE in compliance with Annex G.
dte: Specifies the virtual circuit to serve as a DTE in compliance with Annex G.
nonstandard-compatible: Adopts the nonstandard-compatible mode for compatibility with VoFR of
Cisco routers.
signal-channel ccid-no data-channel dcid-no: FRF.11 sub-channel numbers respectively used by signaling
and data when VoFR operates in the nonstandard-compatible mode. The value ranges for ccid-no and
dcid-no are both 4 to 255.
keepalive: Sends KeepAlive messages regularly. In the nonstandard-compatible mode, KeepAlive
messages are regularly sent so as to monitor and control the sub-channel status. If the keepalive keyword
is configured, network congestion is considered occurring when one end fails to receive any KeepAlive
message within a period of time. In this case, the active call control sub-channel deactivates, and no
voice call can be set up any longer. If the keepalive keyword is not configured, the control sub-channel
status is synchronized with the PVC status.
Usage guidelines
If the VoFR operation mode is set to Motorola-compatible and the call mode is set to static (FRF.11 trunk
mode), a call failure occurs.
In the Huawei-compatible or Motorola-compatible mode, the T1.167 Annex G protocol is adopted. In this
case, different ANNEX G-compliant control block types must be configured at both ends: one to DTE and
the other to DCE.
Examples
# Set the call control protocol on DLCI 1000 to nonstandard-compatible, call control sub-channel number
(ccid) to 4, and data sub-channel (dcid) to 5, and enable the regular sending of KeepAlive messages.
<Sysname> system-view
[Sysname] interface serial 1/0
[Sysname-Serial1/0] link-protocol fr ietf
[Sysname-Serial1/0] fr dlci 100
[Sysname-fr-dlci-Serial1/0-100] vofr nonstandard-compatible signal-channel 4
data-channel 5 keepalive
# Set the call control protocol on DLCI 200 to Huawei-compatible (DTE).
<Sysname> system-view
[Sysname] interface serial 1/0
[Sysname-Serial1/0] link-protocol fr ietf
[Sysname-Serial1/0] fr dlci 200
[Sysname-fr-dlci-Serial1/0-100] vofr huawei-compatible dte
Related commands
call-mode
vofr frf11-timer
Use vofr frf11-timer to configure the trunk wait timer length in the FRF.11 trunk mode.