Genban IP8820 - 1 Introducing the IP8820;IP8830;IP8840; The IP Phone IP8820;IP8830;IP8840 Overview

IP8820/IP8830/IP8840
Installer Guide
1
1. Introducing the IP8820/IP8830/IP8840
1.1 The IP Phone IP8820/IP8830/IP8840 Overview
The LG-Ericsson IP phones (IP8820, IP8830 and IP8840) are Internet Protocol (IP) phones
designed to support hosted telephony services over a managed IP network. Based on the open
standard Session Initiation Protocol (SIP), IP8800 series phones interoperate and exchange
signaling messages with SIP call servers, proxies and gateways to establish, maintain and
terminate calls. Real-time Transport Protocol (RTP) packets transport audio between end-
points through the service provider’s network.
Features available to the IP Phones when used with SIP call servers are similar to those of a
conventional business telephone. Features available for a given phone depend on the
configuration of the call server as well as configuration of the IP phone and include:
Anonymous call blocking
Auto answer
Call forward
Busy
No answer
Busy & No answer
Immediate
Call hold
Call hold ringback
Call logs
Missed
Incoming
Outgoing
Call Park
Call Pick-up
Directed
Group
Park pick-up
Call refusal
Call transfer
Call waiting
Caller Id display
Click-to-call
Distinctive ring tones
Do Not Disturb (DND)
DSS/BLF (Presence)
Hands-free dialing
Hotline/Warm-Line (Direct Call)
Last call return
Last number redial
LCD contrast control
MADN (Multiple Appearance Directory Number)
Message wait with indicator lamp and tone