Samsung OfficeServ 500 Service Manual page 23

OfficeServ 500 Wireless LAN Service Manual/Ed.00
3.2 8WLI
3.2.1 Overview
The 8WLI card, a service board providing the wireless solution to the OfficeServ 500
System, provides the wired interface in between the OfficeServ 500 System and
WBS24(WLAN Base Station 2.4 GHz), which is the wireless LAN's AP(Access
Point).
The wired interface method, a digital method, uses 2B+1D DASL(Digital Adapter
Subscriber Loops), and communicates with the upper main CPU board using the
DPRAM(Dual Ports RAM) interface of the IPC(Inter Processor Channel) for
transmitting/receiving messages.
A maximum of one 8WLI card can be mounted on the OfficeServ 500 System, and
the 8WLI can interoperate with a maximum of 8 WBS24s. Since two DASL lines are
connected to one WBS24, simultaneous phone calls are possible through 4 voice
channels of 2 x(2B+1D). Therefore, one 8WLI board can support a maximum of 32
voice channels.
The WBS24 is supplied of –48 V DC power through the DASL line, and can
transmit/receive voice and signaling data in between the 8WLI and WBS24.
3.2.2 Major Functions
The major functions of 8WLI card are as follows :
Provides the wired interface between the AP(Access Point) and the system to
transmit/receive voice and signaling data.
Supports 32 voice channels for each card.
Either provides or blocks -48V DC power supply to the WBS24.
Performs the initiation for the VoIP over WLAN service.
Manages information on all terminals for voice service and provides the service
to only authorized terminal.
Provides the initial registration service for wireless IP-Phone(WIP-5000M).
Provides the calling service to a terminal for voice service.
Supports the mobility between access points, as well as the handover function
for a terminal for voice service.
Interfaces with the main CPU board of OfficeServ 500 System.
© SAMSUNG Electronics Co., Ltd.
CHAPTER 3. Installation
Page 1-7