# INS-1500 NTT layer 3 timer defaults

timer_val_t ntt[NTT_T_LAST]

Timer index | Value (network side, in seconds) | Value (user side, in seconds)
--- | --- | ---
NTT_T300 | 3 | 3
NTT_T301 | 180 | 0
NTT_T303 | 5 | 5
NTT_T305 | 30 | 30
NTT_T306 | 30 | 0
NTT_T307 | 180 | 0
NTT_T308 | 4 | 4
NTT_T309 | 90 | 90
NTT_T310 | 10 | 45
NTT_T312 | 6 | 4
NTT_T313 | 4 | 4
NTT_T314 (not exposed to the API) | 4 | 4
NTT_T316 (not exposed to the API) | 120 | 120
NTT_T317 (not exposed to the API) | 100 | 100
NTT_T318 | 0 | 4
NTT_T319 | 0 | 4
NTT_T322 | 4 | 4
NTT_T3JA | 0 | 50