39.4. Links features
Prev Chapter 39. NPV - New Packet Voice Next

39.4. Links features

39.4.1. Link check

Link check allows to automatically manage an eventual “True link backup” (onto ISDN line) in case of failure of the permanent VPN connection. When activating a packet voice, Abilis checks continuously the link using the parameters below:

LC-VALUES

Enables/disables the use of the “Link-Check” protocol, and consequently the transmission of “Link-check” frames. The default value is SYS and means that parameters that are used are directly taken by NPV port. If LINK means that must be used local parameters;

TRY

Number of attempts considered for the state detection.

TOUT

Timeout for the link-check reply reception.

DLY-UP

Interval between attempts while state is UP.

DLY-TOUT

Interval between attempts while state is UP and last try timed out.

THR-DN

Percentage of successful attempts to declare state DOWN.

BURST

Number of requests sent at each attempt.

BURST-DLY

Interval between requests of the same attempt.

These parameters are in the link section:

[18:53:57] ABILIS_CPX:d npvle id:1

- Not Saved (SAVE CONF), Not Refreshed (INIT) ---------------------------------
Configured Links:1         Activated Links:8

ID:1    ACT:YES        LOG:SYS
        CLUS:NONE      MAXBW:NOMAX       MAXCON:NOMAX    GROUP:NONE
        ROLE:PEER      BCK:NO            CR:NO
        REMABILIS-ID:                    REMKEY:
        REMPORT:SYS                      LOC-KEY:
        LOCIP1:SYS                       REMIP1:#
        LOCIP2:SYS                       REMIP2:#
        V-TOS:SYS      C-TOS:SYS         V-TOUT:SYS      V-RED:SYS
        - Link-Check ----------------------------------------------------------
        LC-VALUES:LINK
        TRY:5          TOUT:5000                         BURST:1
        DLY-UP:10      DLY-TOUT:3        THR-DN:30       BURST-DLY:100

39.4.2. Other parameters

CR

Enables the cryptography to be applied on the frames passing through the resource. If YES VOICE: cryptography is applied on VOICE traffic type.

VRED

Voice frames redundancy [NONE - No redundancy, FM - redundancy is active only on fax/modem frame type, VOICE - redundancy is active only on voice frame type, ALL - redundancy is active on FM+VOICE frame type, SYS - value is taken from NPV configuration].

Prev Up Next
39.3. Configuring New Packet Voice Link (NPVL) Home 39.5. NPV diagnostics and statistics