Version 6.4 743 March 2012
SIP User's Manual A. Configuration Parameters Reference
A.12.14 IP Connectivity Parameters
The IP connectivity parameters are described in the table below.
Table A-68: IP Connectivity Parameters
Parameter Description
Web: Alt Routing Tel to IP Mode
EMS: Alternative Routing Mode
[AltRoutingTel2IPMode]
Determines the IP connectivity event(s) reason for triggering
alternative routing.
[0] None = Alternative routing is not used.
[1] Connectivity = Alternative routing is performed if a ping
or SIP OPTIONS message to the initial destination fails
(determined according to the AltRoutingTel2IPConnMethod
parameter).
[2] QoS = Alternative routing is performed if poor QoS is
detected.
[3] Both = Alternative routing is performed if either ping to
initial destination fails, poor QoS is detected, or the DNS
host name is not resolved (default).
Notes:
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 in ''Viewing IP Connectivity''
on page 522) per destination, this parameter must be set to
2 or 3.
Web: Alt Routing Tel to IP
Connectivity Method
EMS: Alternative Routing
Telephone to IP Connection
Method
[AltRoutingTel2IPConnMethod]
Determines the method used by the device for periodically
querying the connectivity status of a destination IP address.
[0] ICMP Ping (default) = Internet Control Message Protocol
(ICMP) ping messages.
[1] SIP OPTIONS = The remote destination is considered
offline if the latest OPTIONS transaction timed out. Any
response to an OPTIONS request, even if indicating an
error, brings the connectivity status to online.
Web: Alt Routing Tel to IP Keep
Alive Time
EMS: Alternative Routing Keep
Alive Time
[AltRoutingTel2IPKeepAliveTime]
Defines the time interval (in seconds) between SIP OPTIONS
Keep-Alive messages used for the IP Connectivity application.
The valid range is 5 to 2,000,000. The default value is 60.
Web: Max Allowed Packet Loss for
Alt Routing [%]
[IPConnQoSMaxAllowedPL]
Defines the packet loss (in percentage) at which the IP
connection is considered a failure and Alternative Routing
mechanism is activated.
The default value is 20%.
Web: Max Allowed Delay for Alt
Routing [msec]
[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 value is 250.