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Member
Reputation: 153
GSM CALL BLOCK ISSUE T-303 expiry, no MM connection available
Can any one tell whats the reason of Blocked Call, tems events show below message,
Block type: T-303 expiry, no MM connection available
what does that mean ??
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2017-05-23 01:38 PM
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Junior Member
Reputation: 10
Re: GSM CALL BLOCK ISSUE T-303 expiry, no MM connection available
the MS do not receive sig:CALL PROCEEDING after sending sig:CM SERV REQ。check A interface weather BSC has send L3 message to MSC or has received return from MSC.
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