Setting Parameters for a VE1 Interface
This section describes how to set parameters for a voice E1 (VE1) interface.
Context
When the device works in H.248 AG mode, the VE1 interface is used often to connect to PBXs. The PBX can connect to the H.248 AG through the PRA trunk (bound to a VE1 interface). On the device, you can enable the CRC4 check, VE1 interface Layer 2 monitoring, and VE1 interface pulse code modulation (PCM) alarm functions, and set the CRC alarm threshold and VE1 interface signaling mode on a VE1 interface.
VE1 interface refers to the E1 interface in voice mode.
Procedure
- Run:
system-viewThe system view is displayed.
- Run:
set workmode slot slot-id e1t1 e1-voice
The E1 interface board is configured as an E1 voice card.
After this command is executed, the configured service takes no effect.
After you using this command, the system displays a message asking you whether to reset the E1 voice card. If you enter Y, the system resets the E1 voice card to make the configuration take effect. Otherwise, run the reset slot command to restart the E1 voice card.
- Run:
voiceThe voice view is displayed.
- Run:
port ve1 slotid/subcardid/portid
The VE1 interface view is displayed.
- Run:
display voice port ve1 [ state slotid/subcardid/portid | slotid/subcardid/portid ]
The signaling mode of the VE1 interface is displayed. If the signaling mode is not CCS, run the signal ccs command to change the signaling mode of the VE1 interface to CCS
In H.248 AG mode, the signaling mode of the VE1 interface must be CCS.
- (Optional) Run:
access-mode { digital | direct }
The access digital section mode is set.
- (Optional) Run:
crc4 enableThe CRC4 check is enabled.
- (Optional) Run:
crc-alarm-threshold { es es-threshold | cses cses-threshold | dm dm- threshold }
The CRC alarm threshold is set.
- (Optional) Run:
l2-monitor enableVE1 interface Layer 2 monitoring is enabled.
- (Optional) Run:
pcm-alarmThe PCM alarm function is enabled.
- (Optional) Run:
impedance impedance-value
The impedance of the VE1 interface is set.