Configuring the 3GPP Timers

To configure the GPP timers, use the following configuration:

config 
    amf-global 
        call-control-policy policy_name 
            timers timer_type { retry retry_count | value timeout_value } 
            end 

NOTES:

  • timers timer_type retry retry_count —Specify the retry count.

  • timers timer_type value timeout_value —Specify the timeout value.

    For the timer_type, refer to the following table.

3GPP Timers and Values

Timer

Retry Count or Attempt Count

Timeout Value

tidt

Not Applicable

Must be an integer in the range of 0–35712000 seconds.

The default value is 3480 seconds.

ho-supervisory

Not Applicable

Must be an integer in the range of 100–10000 mill seconds.

The default value is 500 milliseconds.

tpurge

Not Applicable

Must be an integer in the range of 0–35712000 seconds.

The default value is 86400.

t3346

Not Applicable

Must be an integer in the range of 1–11160 seconds.

The default value is 900 seconds.

While processing the t3346 timer towards UE, AMF adds a random offset to the configured timer value. This random offset is based on the configured timer value.

If timer value is:

  • Greater than or equal to 0 seconds, random offset is in the range of 0–30 seconds.

  • Greater than 62 seconds, random offset is in the range of 0–300 seconds.

  • Greater than 1860 seconds, random offset is in the range of 0–1000 seconds.

Maximum value of the recomputed timer value is 11160 seconds.

t3502

Not Applicable

Must be an integer in the range of 0–35712000 seconds.

The default value is 720 seconds.

t3512

Not Applicable

Must be an integer in the range of 0–35712000 seconds.

The default value is 3240 seconds.

t3513

This parameter defines the number of paging attempts.

Must be an integer in the range of 1–5.

The default value is 2.

Must be an integer in the range of 1–10 seconds.

The default value is 5 seconds.

t3522

This parameter defines the number of paging retries.

Must be an integer in the range of 0–5.

The default value is 4.

Must be an integer in the range of 0–30 seconds.

The default value is 6 seconds.

t3550

This parameter defines the number of paging retries.

Must be an integer in the range of 0–5.

The default value is 4.

Must be an integer in the range of 0–30 seconds.

The default value is 6 seconds.

t3555

This parameter defines the number of paging retries.

Must be an integer in the range of 0–5.

The default value is 4.

Must be an integer in the range of 0–30 seconds.

The default value is 6 seconds.

t3560

This parameter defines the number of paging retries.

Must be an integer in the range of 0–5.

The default value is 4.

Must be an integer in the range of 0–30 seconds.

The default value is 6 seconds.

t3570

This parameter defines the number of paging retries.

Must be an integer in the range of 0–5.

The default value is 4.

Must be an integer in the range of 0–30 seconds.

The default value is 6 seconds.

To configure the t3513 timer, use the following configuration:

config 
    amf-global 
        call-control-policy policy_name 
            timers t3513  { attempts paging_attemps_count | value timeout_value } 
            end 

NOTES:

  • timers t3513 attempts paging_attemps_count —Specify the number of paging attempts.

  • timers t3513 value timeout_value —Specify the t3513 timeout value.

    For the t3513 timer configuration values, refer to the 3GPP Timers and Values table.