IP Connectivity Parameters

The IP connectivity parameters are described in the table below.

IP Connectivity Parameters

Parameter

Description

'Enable Tel-to-IP Alt Routing'

configure voip > gateway routing settings > alt-routing-tel2ip

[AltRoutingTel2IPEnable]

Enables the device to check the connectivity status of IP destinations of configured Tel-to-IP routing rules in the Tel-to-IP Routing table. This can then be used to trigger alternative routing for Tel-to-IP calls if connectivity with an IP destination is down and an alternative routing rule has been configured.

■ [0] Disable = (Default) Disables the IP Connectivity feature.
■ [1] Enable = Enables the IP Connectivity feature.
■ [2] Status Only = The IP Connectivity feature is disabled, but read-only information on the QoS of the IP destination is provided.

Note: If the parameter is enabled, the Busy Out feature (see [EnableBusyOut] parameter) doesn't function with the Proxy Set keep-alive mechanism. To use the Busy Out feature with the Proxy Set keep-alive mechanism (for IP Groups), disable the parameter.

'Tel-to-IP Alt Routing Mode'

configure voip > gateway routing settings > alt-rte-tel2ip-mode

[AltRoutingTel2IPMode]

Defines the IP Connectivity event(s) reason for triggering alternative routing.

■ [0] None = Alternative routing is disabled.
■ [1] Connectivity = Alternative routing is done if SIP OPTIONS message to the initial destination fails.
■ [2] QoS = Alternative routing is done if poor QoS is detected.
■ [3] Both = (Default) Alternative routing is done if a SIP OPTIONS to the initial destination fails, poor QoS is detected, or the DNS host name is not resolved.

Note:

■ QoS is quantified according to delay and packet loss calculated according to previous calls. QoS statistics are reset if no new data is received within two minutes.
■ To receive quality information, displayed in the 'Quality Status' and 'Quality Info.' fields (see Viewing IP Connectivity) per destination, configure the parameter to QoS or Both.

'Tel-to-IP Alt Routing Keep-Alive Time'

configure voip > gateway routing settings > alt-rte-tel2ip-keep-alive

[AltRoutingTel2IPKeepAliveTime]

Defines the time interval (in seconds) between SIP OPTIONS keep-alive messages for the IP Connectivity feature (see IP Destinations Connectivity Feature).

The valid range is 5 to 2,000,000. The default is 60.

'Max Allowed Packet Loss for Alt Routing'

configure voip > gateway routing settings > mx-pkt-loss-4-alt-rte

[IPConnQoSMaxAllowedPL]

Defines the packet loss (in percentage) at which the IP connection is considered a failure and Alternative Routing mechanism is activated.

The default is 20%.

'Max Allowed Delay for Alt Routing'

configure voip > gateway routing settings > mx-all-dly-4-alt-rte

[IPConnQoSMaxAllowedDelay]

Defines the transmission delay (in msec) at which the IP connection is considered a failure and the Alternative Routing mechanism is activated.

The range is 100 to 10,000. The default is 250.