IPitomy IP1100+ PBX Administrator Guide - Manual (Page 257)

IPitomy IP PBX Admin Guide
IPitomy’s IP PBX system is synched to time.nist.gov server time.
Session Initiation Protocol (SIP) – A signaling protocol that establishes data sessions. For example when
making a call from one extension to another on a VoIP phone system SIP sets up the call and creates the
connection between the two extensions.
Smart Personal Console (SPC) – This user-friendly Web page gives a person the ability to set basic phone
features (mailbox settings, phone key settings, call forwarding, etc) from anywhere. Additionally, the user can
check their voicemail and call logs from the SPC.
Stateful Packet Inspection (SPI ) – A stateful inspection is a firewall architecture that works at the network
layer. Unlike static packet filtering, which examines a packet based on the information in its header, a stateful
inspection tracks each connection traversing all interfaces of the firewall and makes sure they are valid.
Static IP – an IP address that does not change.
Subnet Mask – A subnet mask is a number that defines a range of IP Addresses that can be used in a network.
Subnet masks are used to designate subnetworks, or subnets, which are typically local networks LANs that are
connected to the Internet. Systems within the same subnet can communicate directly with each other, while
systems on different subnets must communicate through a router. Therefore, subnetworks can be used to
partition multiple networks and limit the traffic between them.
Switch – A network device that connects network segments. These come in POE and non-POE varieties.
T
T1 – A dedicated digital voice circuit that has 24 channels. This point-to-point circuit delivers 1.544 Mbps of
bandwidth.
TFTP (Trivial File Transfer Protocol) – a simple protocol to transfer files. IPitomy uses this method in
regards to phone firmware and configuration files. http://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol
Time to Live (TTL) – This refers to an aspect of the Internet Protocol. TTL is used when a "ping," or a request
for a response, is sent to another computer, such as a server. The TTL represents the number of hops, or servers
in different locations, the request can travel to before returning a failed attempt message.
Transfer – Sends a call to another extension.
Trunk – A communications channel between two points.
Transmission Control Protocol (TCP) – Packets sent via this method are verified end to end.
U
Upload - While downloading is receiving a file from another computer, uploading is the exact opposite. It is
sending a file from your computer to another system. It is possible to upload and download at the same time, but
it may cause slower transfer speeds, especially if you have a low bandwidth connection. Because most files are
located on Internet servers, people generally do a lot more downloading than uploading.
Uniform Resource Locator (URL) - A URL is the address of a specific Web site or file on the Internet. It
cannot have spaces or certain other characters and uses forward slashes to denote different directories. Some
examples of URLs are http://www.cnet.com/, http://web.mit.edu/, and ftp://info.apple.com/.
Uninterruptible Power Supply (UPS) – A devise that maintains continual electrical power.
User Datagram Protocol (UDP) - Packets sent via this method are fire and forget.
V
Virtual Private Network (VPN) – a computer network that uses a public telecommunication infrastructure,