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Old 06-18-2014, 12:42 AM
sunilkumarv sunilkumarv is offline
Join Date: Mar 2010
Location: India
Posts: 124
sunilkumarv has 24 reputation pointssunilkumarv has 24 reputation points

Good day,

Its difficult to say what is going on, If the internal calls (extension to extension) does not have any issue, then the Best approach is to run a MST on the ISDN trunk and see if service provider is dropping the call or if its is CM.

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