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Re: Silence for 4-5 seconds (NSN equipment)
Some time a pause could be due to loss of L1 Synch (check N313 and T313). For 4-5 silence, check the values for T314 (default 2sec) and T314 Offset Parameter (PR File : 4 sec). During T314+T314_Offset (2+4=6sec), UEs try to do Cell Update with cause of RL Sync Failure or other causes. From user perspective, this is mute and no sound could be heard from 6 sec.
If RL cannot be restored and Cell Update is unsuccessful, UE move to FACH and call drop counters are updated.
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