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Brekeke SIP Server Wiki

  1. Brekeke SIP Server Basic Info
  2. Security
  3. Update & Upgrade
  4. Configuration
    1. Installation
    2. Basic Setup
    3. BSS Administration Tool
    4. Network Configuration
    5. Dial Plan
    6. Block List
    7. Provisioning
    8. Push Notification
    9. SDN
    10. STIR/SHAKEN
    11. Advanced Edition
    12. Other Functions
      1. Access Brekeke SIP Server Admintool from any computer
      2. Back-To-Back User Agent (B2BUA) Mode
      3. Billing feature
      4. Brekeke SIP Server back up
      5. Call to PSTN by Brekeke SIP Server
      6. Call transfer and voice message
      7. Check call status
      8. Compact Form with BSS
      9. Settings for Microsoft Lync or OCS
      10. Connect to Brekeke SIP Server Admintool with SSL
      11. Difference between RTP relay ON and AUTO
      12. Does Brekeke SIP Server support Video call?
      13. Change RTP buffer size for Video
      14. How to tune T1 timer
      15. IPv6
      16. Replace response code
      17. Use Microsoft SQL server
      18. Upper or Thru Registration
      19. log
      20. Monitoring Brekeke SIP Server with SNMP
      21. TCP or TLS with BSS
      22. Does Brekeke SIP Server support Path (RFC3327)?
      23. Does Brekeke SIP Server support Service-Route (RFC3608)?
      24. Set up Brekeke SIP Server to use WebSocket as SIP transport
      25. Management Command Reference
      26. Setup secure connections (TLS/WSS/HTTPS) with certificate
      27. Set up the email notifications at BSS
      28. Get free certificates from "Let's Encrypt"
    13. Third-Party Database
    14. Environment Variables
  5. Troubleshooting
  6. Developer's Guide
  7. Version History

How to tune T1 timer

Depending on RFC3261, if there is no response from the destination, Brekeke SIP Server will resend SIP INVITE to the destination and then wait till INVITE timeout happens.

The minimum interval for resending INVITE(Timer 1) is 500ms and the time interval to resend the next INVITE is the double-time interval of the previous INVITE. The total number of resending INVITE is 6 times, and it will take about 32 seconds (500ms+1s+2s+4s+8s+16s).

The default setting of Timer 1 is 500 ms. It can be tuned with variable “net.sip.timer.t1”

 

Example:

If you want to shorten the total INVITE resending time to about 7sec, there are following ways to set Timer1 to 100ms.

– Set from Brekeke SIP Server Admintool > [Configuration] > [Advanced] page as below, and restart Brekeke SIP Server from Admintool.

net.sip.timer.t1=100

 

– Add the setting to related Dail Plan rule [Deploy Patterns] as blow, and click on [Apply Rules] button.

&net.sip.timer.t1=100
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