NEC DS1000, Описание продукта

Страница: 124 / 144

Glossary
116
◆
Section 5: Glossary DS1000/2000 Product Description
Do Not Disturb Blocks incoming calls, Off-Hook Signaling, and Paging announcements
at an extension.
Reference:
Do Not Disturb on page 45.
Door Box A unique station instrument, typically placed next to an entrance door,
that allows visitors at the door to communicate with selected internal
extensions. The Door Box works like a door bell with an integral speaker
and microphone.
Reference:
Door Box on page 46.
DSTU Digital Station Port.
Reference: 16DSTU Digital Station PCB (P/Ns 80021 and 80021A) on
page 12 and DS1000 Cabinet (P/N 80200) on page 15.
Expansion Board Expands the capabilities of the DS1000 system.
Reference: DS1000 Expansion Board (P/N 80221) on page 16.
Extended Ringing Allows calls to ring specific extensions (such as warehouse telephones)
for an extended number of rings before the calls follow the system’s nor-
mal rerouting procedures.
Reference:
Extended Ringing on page 47.
Extension Hunting An internal system call routing facility that allows calls to route to a pre-
defined group of hunt group member extensions. There are three types of
extension hunting: Circular Hunting, Terminal Hunting, and Uniform
Call Distribution (UCD) Hunting.
Reference:
Extension Hunting on page 47.
Extension Ringdown See Ringdown Extension on page 123 in this glossary.
External Paging See Paging on page 122 in this glossary.
Exclusive Hold A type of Hold for outside (trunk) calls that allows only the extension
that initially placed the call on Hold to retrieve it from Hold. See also
Automatic Hold on page 112, Intercom Hold on page 119, and System
Hold on page 125 in this glossary.
Reference:
Hold on page 54.