The default timeout value is 5 minutes(300 secs) for MEDIA_TIMEOUT. If you would like to change this value manually, the following configuration file needs to be changed.
C:\Program Files\<tenant_id>\IraSwitch\conf\sip_profiles\internal.xml
Value:
<param name="rtp-timeout-sec" value="300"/>
Modify this to the required value, the value to be given is in secs.
Once the value is changed, please restart iraswitch service for the changes to take effect. Please note this will restart the ongoing calls. So if its production servers please do it when there are no calls or with a downtime required.