End user hears busy signal when answering phone

Unanswered Question
Jan 21st, 2008
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When an end user answers the phone, she hears a busy signal. The fast busy is also showing up in voice mail. The only thing in common is that the CallingPartyNumber is blank.

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c.yeo Mon, 01/21/2008 - 09:13
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We ran into this with our BRI ports when we upgraded the IOS on our voice gateway. The call control signal was not making it out the gateway.

Cisco TAC had us change to a more stable verson.

We currently use: Version 12.4(15)T1 on our 3825 and 28xx gatways.




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