| Таймер | Значення | Допустимий діапазон по Q.7xx | Призначення |
| L2TimerT1 | 45000 | 40000-50000 ms. | Немає пiдтвердження виходу в InService пiсля ReadyState |
| L2TimerT2 | 30000 | 5000-150000 ms. | Timer notAligned |
| L2TimerT3 | 1500 | 1000-2000 ms. | Timer Aligned |
| L2TimerT4N | 8200 | 7500-9500 ms. | Normal Proving Period |
| L2TimerT4E | 500 | 400-600 ms. | Emergency Proving Period |
| L2TimerT5 | 120 | 80-120 ms. | Timer Sending SIB |
| L2TimerT6 | 5500 | 3000-6000 ms. | Timer Remoute congestion |
| L2TimerT7 | 7500 | 500-2000 ms. | Timer excessive delay acknowledgement |
| L3TimerT1 | 800 | 500-1200 ms. | Timer to avoid changeover mis-sequencing on changeover |
| L3TimerT2 | 1400 | 700-2000 ms. | Timer for changeover acknowledgement |
| L3TimerT3 | 800 | 500-1200 ms. | Time-controlled Diversion delay to avoid mis-sequencing on changeback |
| L3TimerT4 | 800 | 500-1200 ms. | Wait for changeback acknowledgement(first attempt) |
| L3TimerT5 | 800 | 500-1200 ms. | Wait for changeback acknowledgement(second attempt) |
| L3TimerT6 | 800 | 500-1200 ms. | Delay to avoid mis-sequencing on controlled rerouting |
| L3TimerT7 | 1500 | 1000-2000 ms. | Waiting for signalling data link connection acknowledgement |
| L3TimerT8 | 1000 | 800-1200 ms. | Transfer prohibited inhibition timer(trancient solution) |
| L3TimerT9 | 1000 | | not used |
| L3TimerT10 | 50000 | 30000-60000 ms. | Waiting to repeat signalling route set test message |
| L3TimerT11 | 60000 | 30000-90000 ms. | Transfer restricted timer |
| L3TimerT12 | 1000 | 800-1500 ms. | Waiting for uninhigit acknowledgement |
| L3TimerT13 | 1000 | 800-1500 ms. | Waiting for force uninhibit |
| L3TimerT14 | 2500 | 2000-3000 ms. | Waiting for inhibition acknowledgement |
| L3TimerT15 | 2500 | 2000-3000 ms. | Waiting to start signalling route set congestion test |
| L3TimerT16 | 1600 | 1400-2000 ms. | Waiting for route set congestion status update |
| L3TimerT17 | 1000 | 500-1500 ms. | Delay to avoid oscillation of initial alignment failure and link restart |
| L3TimerT18 | 10000 | | Timer for MTP restart is Network dependend!!!!! |
| L3TimerT19 | 68000 | 67000-69000 ms. | Supervision timer during MTP restart to avoid possible ping-pong of TFP, TFR, TRA |
| L3TimerT20 | 60000 | 59000-61000 ms. | Overall MTP restart timer at the signalling point whose MTP restarts |
| L3TimerT21 | 64000 | 63000-65000 ms. | Overall MTP restart timer at the signalling poin ajacent to one whose MTP restarts |
| L3TimerT22 | 300000 | 180000-360000 ms. | !DWORD CNT! Local inhibit test timer |
| L3TimerT23 | 300000 | 180000-360000 ms. | !DWORD CNT! Remoute inhibit test timer |
| L3TimerT24 | 500 | 500 ms. | Stabilising timer after removal of LPO, used in LPO latching to RPO (national) |
| TmrSLTMRepeats | 10000 | | T1 (SLTx) - Повторна передача SLTM |
| TmrNexNormSLTM | 30000 | | T2 (SLTx) - Для пробного SLTM |
| ISUPT7Incoming | 35000 | 20000-30000 | Очікування ACM після IAM/SAM |
| ISUPT7Outgoing | 37000 | 20000-30000 | Очікування ACM після IAM/SAM |
| ISUPT9Incoming | 180000 | 30000-180000 | Очікування ANM після ACM |
| ISUPT9Outgoing | 180000/120000 | 30000-180000 | Очікування ANM після ACM/для абонента |
| ISUPTxIncoming | 16*3600 | | Тривалість розмови [нормальна] |
| ISUPTxOutgoing | 16*3600 | | Тривалість розмови [нормальна] |