Avaya Partner 18 Telephone

Avaya telephones



Computers in an office communicate via the LAN (Local Area Network). This at its simplest may be a length of coax cable connecting all the computers, or by twisted pair cables going into a central hub unit. The IP401, IP403 and IP406 platforms incorporate an integral dual speed Ethernet hub (10/100 Base-T), while the IP Office - Small Office Edition and the IP412 support layer 2 and Layer 3 Ethernet Switching respectively, thereby allowing all users to easily utilize the data networking capabilities of IP Office.

When computers communicate they do not care where the destination is. Their task is simply to pass the packet to the next machine and then forget about it. Where the destination is on another network, the router is the "gateway" to the rest of the world and its job is to cope with that traffic. The router alleviates the need to establish and hold the call for the duration of a remote communication session by automatically establishing a connection only when data is to be passed.

Routers may be connected together using WAN (Wide Area Network) links that could be point-to-point leased lines, managed IP networks, Frame Relay networks or exchange lines (Central Office). IP Office platforms support all of these types of network connections. The IP Office has a Wide Area Network (WAN) port that can be connected to a digital leased line service using either X.21 or V.35 interface at speeds up to 2048kbps. Point-to-Point protocol (PPP) is used over this link. The data within the call uses the Point-to-Point Protocol (PPP), which is used by the vast majority of manufacturers for linking routers. PPP support is essential if it is not the same manufacturer’s equipment at each end of the link. Exchange lines (Central Office) can also be used in the event of failure of the WAN link or to provide alternate or top up bandwidth on demand.

All IP Office platforms have an integral router with support for bandwidth on demand that allows the negotiation of extra bandwidth dynamically over time. IP Office initiates extra calls between sites only when there is data to be sent or sufficient data to warrant additional channels. It then drops the extra channels when they are no longer needed. The calls are made automatically, without the users being aware of when calls begin or end. The rules for making calls, how long to keep calls up etc, are configurable within IP Office. It is possible to have several different routing destinations or paths active at any time linking the office to other offices and the Internet simultaneously.

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