B-Timer

Owned by Rob Whyte (Unlicensed)
Last updated: Jul 26, 2023 by Kelly Evans (Unlicensed)
1 min read

B Timer

The B Timer is the maximum amount of time that the Orchestrator will wait for a provisional response to a SIP Invite message (i.e. a SIP 18x response). An extension of PDD, B-Timer moves a call to the next trunk or trunk group if no provisional response is received from the vendor. The portal activates B-Timer when the Invite sent to the outgoing trunk does not receive a 100 Trying within the allocated time. If the allocated time exceeds the portal limit, the call rolls over to the next Trunk or Trunk Group if available.

The B-Timer value should be:

  • between 1-10 and

  • smaller than the PDD value.

The default setting is an empty field. That means B-Timer is not considered unless the field contains an integer value between 1 to 10.

Example

  • Set PDD to 10 seconds and B Timer to 3 seconds.

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