IP Telephony and Phones

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All, Im racking my brain on this one and need some Presence help.  Ive got everything working except two things.  When I into the CUPS client, and go to server health, I have two things that show up as not working:1.  Voicemail:  It says "failed to c...

jjoseph01 by Level 3
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I have configured a SIP trunk in CCM 4.0. outgoing calls are working perfectly. but when dials SIP trunk from outside (incoming calls), it says "Network Busy". can anyone help me how to receive all incoming calls from SIP trunk to IP phone registered...