TServer SIPPremise:TServer:sip-link-type

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Published Option

sip-link-type

Default Value: 0
Valid Values: 0, 3, 4
Changes Take Effect: After SIP Server restart

Specifies whether SIP Server will run in multi-threaded mode, or in single-threaded mode for backward compatibility. Configure the valid values for this option as follows:

• 0 (default)—SIP Server runs in single-threaded mode, as in pre-8.0.3 releases, with the Main thread processing T-Library requests, distributing Events, managing SIP calls, and processing SIP signaling
• 1,2—Reserved for debugging
• 3—Enables multi-threaded mode with the following threads:
  • T-Server thread—processes T-Library requests and distributes Events
  • Call Manager thread—manages SIP calls and processes SIP signaling (except OPTIONS messages)
  • Service Checker thread— performs Active Out-of-Service Detection (OPTIONS messages)
• 4—Enables multi-threaded mode designed for IMS double-dip deployments, with the following threads:
  • T-Server thread
  • 16 Call Manager threads
  • Service Checker thread
  • Presence Manager thread

In both single-threaded and multi-threaded modes, SIP Server runs the following threads:

• SIP transport layer thread to dispatch SIP messages
• Operational Information thread to collect and report statistics; to perform NIC monitoring
• A number of auxiliary threads

Important: For an HA configuration, this option must be set to the same value in both primary and backup SIP Servers.

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