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Standarden innehåller en specifikation av hur DTM-protokollet transporterar Ethernet-trafik, såsom IP, i en nätverksmiljö där DTM ingår. Den förbindelseorienterade DTM-tekniken förbättrar Ethernets egenskaper genom att erbjuda ett underliggande transportlager som kan garantera den ovanliggande tjänstens kvalitet.

how many transistors are in a computer

Standarden innehåller en specifikation av hur DTM-protokollet transporterar Ethernet-trafik, såsom IP, i en nätverksmiljö där DTM ingår. Den förbindelseorienterade DTM-tekniken förbättrar Ethernets egenskaper genom att erbjuda ett underliggande transportlager som kan garantera den ovanliggande tjänstens kvalitet.

The premise of our product,” says Ascendent's president Stephen Forte, is enabling workers to use their corporate enterprise tools from anywhere. So what we do is integrate the wireless, or any remote network, into the enterprise PBX.”

Usually, the WirelessConnect server connects through a T1 (but can also be made over IP), If my assistant calls me from extension 2032, my cell phone will show a caller ID of 2032. That's probably how you recognize most people in your enterprise, by their extension, not their cell phone number.” Outbound works the same: You can dial corporate extensions from your cell phone. The underlying mechanism is simple: You set up a speed dial number on the cell phone that dials to an access number. Let's say you set up a turbo-dial on the '1' key of your cell phone. You hold down that one key for a couple of seconds, then an odd thing happens: You get dial tone on your cell phone. It's odd, but it's completely understandable to the user. Once you've got dial tone, you can dial any number you'd normally dial on your PBX. So if you dial 2302 for your assistant, you dial 2302 from your cell phone.”

how many transistors are in a computer

If you've got internal IP tie lines among PBXs at geographically distant corporate locations, you get potential gains from rate arbitrage on calls to far-off internal extensions by routing cell calls through your PBX. Furthermore, all cell phone calls that are made through the PBX may also be tracked by the enterprise's existing call accounting programs. This is all done in real time, as opposed to waiting for all the execs to expense their cell phone bills.

Another PBX function that can be leveraged is class-of-service restrictions. Because of the way we're intelligently connected to the PBX, we can lock all these remote devices into your class-of-service scheme,” Forte says. To prevent theft-of-service (war-dialing till you hit a number that provides dial tone from the WirelessConnect server and then dialing out), the server can screen by DID and can optionally require a user PIN.

Cell phones can be force-dialed to the access number (similar to the way carriers force all dialed numbers to terminate in accounts payable if you haven't paid your bill). You can give cell phones to couriers or fleet personnel and prevent them from calling anywhere but dispatch and human resources.”

how many transistors are in a computer

An interesting extra capability offered by the WirelessConnect system is disaster recovery. If you run two systems in two locations and a disaster completely wipes out one's phone system, the WirelessConnect at the backup location will recognize that the real extensions are gone and begin providing a shadow extension” capability to displaced workers, implementing a rerouting contingency plan. Employees then can call in from wherever they happen to be, get internal dial tone, and use the same old dialing plan, still using the extension number they know to reach a colleague, say, even though that colleague is now operating from a temporary office.

While Ascendent has some unique capabilities, they aren't the only vendor to offer a solution that ties cellular users back into their company PBXs. MCK Communications' (Needham, MA – 617-454-6100, www.mck.com) MobileConneX PBXgateway provides the same core functionality, with each unit supporting up to 24 users.

how many transistors are in a computer

Also delivering similar cell-phone support is Avaya's EC500 Extension to Cellular. Again, the basic mechanism is a server that hooks up to the PBX, in this case an Avaya ECLIPS box. As you'd expect, Avaya takes full advantage of its own PBX to implement tight feature transparency to the handset, with some nice unexpected features thrown in. You can, for instance, have the message waiting” lamp functionality of the traditional desktop set pushed out as a text message to your cell phone. To prevent your cell phone from ringing with work calls when you're off duty,” it's possible to configure accounts from the handset. Given current cell pricing trends, it's hard not to imagine increasing traction for this kind of premise server, which we can't help but note is essentially a legacy-friendly variant of the next-gen softswitch/application server architecture scaled down for corporate use of a legacy application (the basic PBX features).

SOME WIRELESS LINGO

Bob Walder NSS Group

Effective communication is one of the most important elements of a successful business, and communication modes have broadened in recent years to include not just voice, but fax and electronic data too. The use of the LAN and WAN, and the more widespread acceptance of newer technologies such as electronic mail, has helped to increase efficiency of communications in many companies throughout the world. E-mail has been able to make this impact due largely to the relatively low cost of PC-based systems, allowing us at last to have a reasonably powerful computing resource on everyone's desk.

Text-based messaging systems have become increasingly sophisticated, and with the Internet at our disposal and the adoption of enterprise-wide messaging strategies by many large corporates, world-wide e-mail communication has become a reality.

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