Samsung OfficeServ 500 General Description Manual

Also see for OFFICESERV 500 Series: Service manual System administration guide Quick setup guide Quick setup guide Quick setup guide

Contents

These IP Keysets can be installed in the local office or in a remote office, home office with full featureoperation.3) IP Networking: Connect up to 15 systems together over a managed IP network.The OfficeServ 500 Media Gateway Interface (MGI) cards support up to sixteen voice calls per card over an IPnetwork connection using the industry standards based H.323 or SIP protocol.The MGI cards fit into any uni-versal OfficeServ 500 card slot. The OfficeServ 500 supports a maximum of five MGI cards per cabinet.VoIP is transported by the OfficeServ 500 MGI cards by utilizing the ITU standards based or H.323 or SIP pro-tocol.This standard addresses the means of transferring voice, data, and images through IP (Internet Protocol)networks.With VoIP certain compression standards have also been adopted to represent each second of voice with anamount of bandwidth. The OfficeServ 500 MGI3 utilizes G.711, G.729, G.729A or G.723 standards voice com-pression codec’s while the MGI2 supports G711, and G729A only. This allows for a selectable 64kbps (G711),8Kbps (G729A) or 6.3Kbps (G723) bandwidth use when preparing voice compression for IP transport.Compression is used to reduce the digitized voice into a smaller bandwidth that can be carried in smallerpackets. The VoIP gateway determines the compression method for each call setup. There is also a certainamount of frame/packet overhead in each compression channel. 64K of bandwidth can support 6~7 callssimultaneously. This can vary depending on efficiency features like Silence Suppression and multiframecounts. Unlike switched networks, VoIP connections consist of a sequence of numbered data packets. Sincevoice conversation is usually considered “real time” these packets need to be delivered in a consistent man-ner with minimal delay. This can be controlled via a Gatekeeper which tracks and monitors voice packets.Gatekeepers are part of the H.323 standard but are not required. The OfficeServ 500 MGI cards areGatekeeper compliant.In any Ethernet environment, packet transfers are subject to delays and/or loss. If these delays are greaterthan 200ms the voice quality will deteriorate. The Ethernet data traffic and network topology should be aconsideration when using VoIP. Network congestion will affect call quality in any VoIP application.WALKING CLASS OF SERVICEThis feature allows users to make calls or use features from a station that is restricted. The users may eitheruse the WCOS feature code or the authorization code feature. Both methods change the class of service tocorrespond with the station passcode or authorization code that is dialed. After the call is completed, the sta-tion returns to its programmed class of service.WIRELESS HANDSET—See Mobility Solution4.29