Nortel keycode

Nortel keycodes are 24-digit numerical strings used to activate a variety of Nortel product features, most notably in their telecommunications product range. Popular telephony (PBX) systems like the Business Communications Manager or BCM, which operate a range of Nortel business phones, utilise these keycodes to activate features such as voicemail, digital extensions, SIP trunks, ISDN, call centre reporting, and more.
Obtaining Keycodes
Keycodes can only be obtained for a specific system identified by a 12-digit hexadecimal System ID value. Before any keycode can be obtained, an Authorisation Code must first be acquired. This code entitles the holder to obtain a keycode for their specific system by entering the Authorisation Code as well as the System ID.
Keycodes are obtained through the use of Nortel's Keycode Retrieval System (KRS). The KRS is available on the Internet and is available only to authorised Nortel technicians, dealers, and specific companies with which Nortel has service agreements. This, however, makes it difficult for individuals (or smaller companies) to purchase authorisation codes from online auction sites and use them without having to contact (and pay for the services of) a Nortel supplier.
It is important to note that keycodes are not generated. The keycodes obtained through the retrieval system have all been pre-programmed into the ROM or EEPROM chips of all of respective Nortel products during the manufacturing process.
Use
Once a user enters a valid keycode, for example 12345678-901234567-01234567, the system then converts that string into a HEX value, for example F158F2A82C9F4B87, which in turn correlates with a built-in value and its corresponding feature, thereby making that feature available.

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