# AT&T 4ESS layer 3 timer defaults

timer_val_t at4[AT4_T_LAST]

Timer index | Value (network side, in seconds) | Value (user side, in seconds)
--- | --- | ---
AT4_T300 | 1 | 1
AT4_T303 | 4 | 4
AT4_T305 | 4 | 4
AT4_T306 | 60 | 4
AT4_T308 | 4 | 90
AT4_T309 | 90 | 30
AT4_T310 | 10 | 4
AT4_T313 | N/A | 4
AT4_T316 (not exposed to the API) | 120 | 120
AT4_T317 (not exposed to the API) | 0 | 0
AT4_T321 (not exposed to the API) | 40 | 40
AT4_T3M1 (not exposed to the API) | 120 | 120