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Are you asking how to add a DID to dial directly into voicemail or a call handler/auto attendant? Your question states the version of Unity Connection which handles the voicemail and call handler functionality, but then you ask how to add a DID in CUCM.
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You are right. &nbsp;I meant to ask how to add a did in CUCM.
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I know the gateway is H323. &nbsp;Not sure what the connection is to PSTN or the digits.
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Anyone have a simple instructions or point me in the right direction
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Anyone have a simple instructions or point me in the right direction

Cisco Unity Connection version: 10.5.2.12901-1 how to add a did line to cisco call manager

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).