Figure 2.32 Front View Of The Oas - Samsung OfficeServ 7200 System Description

2.3.5.2 OAS (OfficeServ Application Server)
The OAS converts the voice into data and transmits the data through the data network.
It supports a maximum of 32 channels and provides the G.729, G.723, G.711 voice
compression/decompression function. It also provides a T.38 specification compliant Fax
function. OAS can be mounted on slots 1, 2, 3, 4, and 5 of the basic and expansion cabinet.
If the OAS board is mounted on one of the slot 1 and 2, no board can be mounted on the
other slot. If any board is mounted on the other slot, the board will not work.
Major Functions
The major functions of the OAS are as follows:

Voice decompression (Codec): G.729, G.723, and G.711

Fax Relay Function: Providing 1 FAX channel according to Voice 1 channel

Echo cancellation: Dual Filter EC (Enhanced EC)

Volume adjustment (-14~+6 dBm)

Silence suppression

DTMF receiver functions with channel numbers such as 32, 28, 24 or 16 for MOBEX
Executive user.

MPS (Media Proxy Service) redirects the RTP data for the call between IP Phone of
Private IP Network and that of Public IP Network.
Front View of OAS
The front view of the OAS is shown in the figure below:
LAN
© SAMSUNG Electronics Co., Ltd.
SIO

Figure 2.32 Front View of the OAS

OfficeServ 7200 System Description
LAN LAN
PWR RUN Tx Rx
SVC1 SVC2 SVC3 SVC4
RST
OAS
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