SIP User's Manual  844  Document #: LTRT-12804 
  Mediant 800 MSBG 
 
Parameter  Description 
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. For 
information on the Alternative Routing feature, see 
''Configuring Alternative Routing (Based on Connectivity and 
QoS)'' on page 442. 
  To receive quality information (displayed in the 'Quality 
Status' and 'Quality Info.' fields in ''Viewing IP Connectivity'' 
on page 356) per de
stination, 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. 
[EnableAltMapTel2IP] 
Enables different Tel-to-IP destination number manipulation 
rules per routing rule when several (up to three) Tel-to-IP 
routing rules are defined and if alternative routing using release 
causes is used. For example, if an INVITE message for a Tel-
to-IP call is returned with a SIP 404 Not Found response, the 
call can be re-sent to a different destination number (as defined 
using the parameter NumberMapTel2IP). 
  [0] = Disable (default) 
  [1] = Enable 
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/EMS: Alternative Routing 
Tone Duration [ms] 
[AltRoutingToneDuration] 
Determines the duration (in milliseconds) for which the device 
plays a tone to the endpoint on each Alternative Routing 
attempt. When the device finishes playing the tone, a new SIP 
INVITE message is sent to the new destination. The tone 
played is the Call Forward Tone (Tone Type #25 in the CPT 
file). 
The valid range is 0 to 20,000. The default is 0 (i.e., no tone is 
played). 
Web: Max Allowed Packet Loss for 
Alt Routing [%] 
[IPConnQoSMaxAllowedPL] 
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] 
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.