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Reply To: tch access failure,SDCCH drop


tch_norm_seiz does not mean that the MS is on TCH. It means that TCH has been successfully seized. Some mobiles never appear to the TCH because:
• the call is cleared by the user (probability is higher if call setup takes
a long time, and thus DR and queuing can increase this share) or
• the mobile fails or
• something else goes wrong.