Brekeke SIP Server Wiki

The environment variable is for setting the server’s behavior, administrative information, various internal parameters.

To set an environment variable using the Dial Plan, please add the prefix ‘&’ before the variable name. The environment variable’s value set using the Dial Plan is valid only for the session the rule is applied.

Ex 1. Using G723 as the codec for all calls

$request = ^INVITE

&net.rtp.audio.payloadtype = 4

Ex 2. Not Appending Record-Route header if the callee’s name prefix is “9”

$request = ^INVITE
To = sip:9.+@

&net.sip.addreordroute = false

Ex 3. Not Adding lr parameter to Record-Route header if the callee’s host name is “host”

$request = ^INVITE
$geturi( To ) = @host

&net.sip.addreordroute.lr = false

Ex 4. Not Appending rport parameter to Via header if the callee’s host name is “host”

$request = ^INVITE
$geturi( To ) = @host

&net.sip.addrport = false

Ex 5. Setting the ringing timeout period to 30 seconds if the caller’s name is “admin”

$request = ^INVITE
From = sip:admin@

&net.sip.timeout.ringing = 30000

Ex 6. Using Upper Registration to “host.domain” if the caller’s name prefix is “9”

$request = ^REGISTER
From = sip:9.+@

&net.registrar.upper.allow = true
&net.registrar.upper.url = host.domain
$continue = true

Ex 7. Adjusting the following registration period as 100 seconds if the current period is less than 100 seconds

$request = ^REGISTER
Expires = ^[0-9].$

&net.registrar.adjust.expires=100
$continue = true

Ex 8. Not Using Thru Registration if the callee’s host name is “host”

$request = ^REGISTER
$geturi( To ) = @host

&net.registrar.thru.allow = false
$continue = true