# USA National ISDN 2 layer 3 timer defaults

timer_val_t ni2[NI2_T_LAST]

Timer index | Value (network side, in seconds) | Value (user side, in seconds)
--- | --- | ---
NI2_T300 | 1 | 1
NI2_T301 | 180 | 0
NI2_T302 | 15 | 0
NI2_T303 | 5 | 4
NI2_T305 | 30 | 30
NI2_T306 | 60 | 0
NI2_T308 | 4 | 4
NI2_T309 | 30 | 30
NI2_T310 | 40 | 0
NI2_T313 | 4 | 4
NI2_T316 (not exposed to the API) | 30 | 30
NI2_T317 (not exposed to the API) | 20 | 20
NI2_T321 (not exposed to the API) | 5 | 40
NI2_TSPID (not exposed to the API) | 0 | 20