Trendnet SecurView PoE Dome Internet Camera User Manual

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P
 
PCM 
PCM (Pulse Code Modulation) is a technique for 
converting analog audio signals into digital form for 
transmission. 
PING 
Packet Internet Groper, a utility used to determine 
whether a specific IP address is accessible. It 
functions by sending a packet to the specified address 
and waits for a reply. It is primarily used to 
troubleshoot Internet connections. 
PPPoE 
Point-to-Point Protocol over Ethernet. PPPoE is a 
specification for connecting the users on an Ethernet 
to the Internet through a common broadband medium, 
such as DSL or cable modem. All the users over the 
Ethernet share a common connection. 
Protocol 
Communication on the network is governed by sets of 
rules called protocols. Protocols provide the guidelines 
devices use to communicate with each other, and thus 
they have different functions. Some protocols are 
responsible for formatting and presenting and 
presenting data that will be transferred from file server 
memory to the file server’s net work adapter Others 
are responsible for filtering information between 
networks and forwarding data to its destination. Still 
other protocols dictate how data is transferred across 
the medium, and how servers respond to workstation 
requests and vice versa. Common network protocols 
responsible for the presentation and formatting of data 
for a network operating system are the Internetwork 
Packet Exchange (IPX) protocol or the Internet 
Protocol (IP). Protocols that dictate the format of data 
for transferors the medium include token-passing and 
Carrier Sense Multiple Access with Collision Detection 
(CSMA/CD), implemented as token-ring, ARCNET, 
FDDI, or Ethernet. The Router Information Protocol 
(RIP),a part of the Transmission Control 
Protocol/Internet Protocol (TCP/IP) suite, forwards 
packets from one network to another using the same 
network protocol.