AT&T DEFINITY 7300 series Manuál s instrukcemi stáhnout pdf (Strana 422)

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GLOSSARY

Ground-Start Trunk

On outgoing calls, System 25 transmits a request for service to the

distant switching system by grounding the trunk ring lead. When the

distant system is ready to receive the digits of the called number,

that system grounds the trunk tip lead. When System 25 detects this

ground, it removes the ground from the ring lead and the trunk is

ready for service.

Home Numbering Plan Area (HNPA) Code

The local area code. Does not have to be dialed to place calls to

numbers within the local numbering plan area.

Immediate-Start Tie Trunk

After establishing a connection with the distant switching system for

an outgoing call, the system waits a nominal 65 milliseconds before

sending the digits of the called number. This allows time for the

distant system to prepare to receive the digits. Similarly, on an

incoming call, the system has 65 milliseconds to prepare to receive

the digits.

Intercept Tone

On System 25, this tone is the same as Reorder Tone. Indicates a

dialing error or denial of the service requested.

Interface

Internal

A common boundary between two systems or pieces of equipment.

Call

A connection between two stations within the system. Sometimes

called an inside or intercom call.

l-Use Lamp

A red lamp on a multiline voice terminal that lights

appearance will be selected when the handset is

appearance is active when a user is off-hook.

to show which call

lifted or which call

G-9

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