VOIP

An aggregation point at the CO that is a high-density cross-connection point where subscribers’ loops
are connected into a feed cable (hundreds of pairs in a single cable)

connects coropration to the telephone system
Distribution frames with smart switching or encoding equipment
Often used to facilitate DSL
Aggregates large bunches of customer copper loops into optical links to connect to the CO (for an organization, for example)

Distribution frame where building cabling converges( exits the building then)
Inside wiring ( all the cable owned by the company and it could be outside

Privately owned cabling and wiring on the customer side of the demarc

customer ownes bdf and mdf
Aggregated and centralized cross-connect blocks, terminals or patch-panels.

Any equipment installed by the phone company at the customer’s site for use in terminating voice calls
Switch (usually a PBXor KTS)

between mdf and public stwitch telephone network ) usually a patch pannel because they don’t to be respossible
The point at which telephone company-owned facilites
terminate
Usually a cross-connect or wiring terminal near or
outside a building
The point at which the phone company’s troubleshooting stops (without additional fees)

Signaling used to serve analog phones
An FXS interface is on a switch, and has a phone connected to it
Uses FXO signaling
Analog phone to an FXS

Signaling used by phones or PBXs that are connected to the CO switch
Uses FXS signaling

A physical connection to the PBX
Capable of carrying one concurrent call

The one concurrent phone call
One line can have multiple line appearances

Multiple phones ring simultaneously
When answered on any phone in the group, the ringing stops

A call destined for a particular phone rolls to another channel depending on why the phone is currently unavailable

Next available channel when phone is on a
call.

Rolls to the next available channel when not answered or when first phone is in a call.

A group of phones in a home is not a ring group or hunt group

The rules governing call-routing behavior of the
PBX

Standard telephony service is commonly referred to
Provides a dial tone to rotary and touch-tone telephones

Signaling System 7 (SS7) messaging and service enablers areWHAT**to operate these features.

Enables calls to follow as the subscriber moves from one location to another

Indicates an incoming call when the subscriber is already involved in a call

Enables subscribers to conference a third party in on a conversation

Provides a convenient way for subscribers to store frequently used numbers (this is often provided via the memory of the end-user phone)( short Cut

Enables subscribers to add a second line that they can identify by a distinctive ring and call-waiting tones

SS7 messages and functions are then invoked and sent within the network to perform the requested operations.
SS7 is needed

Enables the subscriber to dial a code after he or she receives a harassing call, which notifies the local law enforcement agency

subscriber receives a busy signal. This feature notifies the subscriber whenthe called party line is free by placing the call. (This feature is also referred to as camp on.)

Enables the subscriber to easily return a missed call.

Requires a display telephone to display the calling name and calling number.

Enables the called party to hide his or her identity when dialing subscribers who have CLASS
display capabilities.

Enables subscribers to accept, reject, or forward calls based on a list of received calling numbers.

PSTN-based voice mail enables SPs to offer an alternative to answering machines.

Enables subscribers to store and play recorded greetings and receive, review, and distribute messages from outside users

Enables subscribers to receive faxes and view them at a later time

are important to SPs because they represent a large portion of SP's revenue base.

cost-effectively interconnect corporate voice traffic between multiple locations over the PSTN

enables SPs to offer smaller businesses voice and data services similar to those found in larger and more costly private solutions

have large volumes of incoming calls and need to be able to efficiently handle and distribute these calls among multiple agents

Efficiently routes incoming calls to multiple answering stations.
tracks patterns

Enables SP switches to communicate to the call center computer for appropriate call routing and handling.

services are internal functions provided in the background to support PSTN users. They include number translation, routing, calling services, and special assistance

enable SPs to maintain, access, and translate information used to support special service and access numbers.
Centrally located and accessible to all end offices

databased provide what

By simply dialing 0, hotel guests can reach a hotel operator who can provide room rate information

available by dialing a three-digit national code or an area-specific code.
search for telephone numbers based on directory listings

The bulk of this intervention is for collect calls, third-party billing, calling cards, and credit card services