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Willy you are right on. &nbsp;If we forgo having the 911 ability in the lobby, then the plar function would fit the need.
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Willy you are right on.  If we forgo having the 911 ability in the lobby, then the plar function would fit the need.

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I need to put an IP outside our office space that a visitor can call to let us know they are here, and then we can go to the door and let them in. &nbsp;I know a intercom and camera would be best for this, but isn't going to happen in the near future. &nbsp;I've been tasked with setting up an IP Phone outside the door, but this phone cannot dial to the outside world. &nbsp;I would actually only like this phone to be able to dial for example &quot;2000&quot; which is a hunt group that rings the administrative staff's IP Phones. &nbsp;I cannot find a way to do this. &nbsp;First of all, is this possible? &nbsp;If so, can someone provide me some guidance. &nbsp;Thanks.
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I need to put an IP outside our office space that a visitor can call to let us know they are here, and then we can go to the door and let them in.  I know a intercom and camera would be best for this, but isn't going to happen in the near future.  I've been tasked with setting up an IP Phone outside the door, but this phone cannot dial to the outside world.  I would actually only like this phone to be able to dial for example "2000" which is a hunt group that rings the administrative staff's IP Phones.  I cannot find a way to do this.  First of all, is this possible?  If so, can someone provide me some guidance.  Thanks.

Cisco Call Manager 7 configuration assistance

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).

Voice Over IP

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.