Multitech CF220 Guide de l'utilisateur télécharger pdf (Page 5)

Chapter 1: Product Description and Specifications

Multi-Tech Systems, Inc. CF220-DID CallFinder User Guide 5

Prerequisite: the DID Line(s)

To operate the CallFinder system, you will need two DID (Direct Inward Dial) lines in your office. You

must order the DID line from your local telephone operating company (telco). A DID line allows one

phone line to be associated with multiple directory numbers. However, only one call can occur on this

line at any given time.

DID lines are sold in groups. For example, a telco in New York City might offer a DID line with a set of 20

directory numbers in the range of 212-555-4101 through 212-555-4120.

When ordering your DID line(s), ask the telco representative for these details about the DID service.

These details will be important when setting up your CF220-DID unit.

Parameter Value Required by Telco

Number of digits used to designate the DID extension

(usually 3, 4, 6, or 7)

Type of “DID Start” used (wink, immediate, or delay dial)

You will need this information to configure your CallFinder DID-to-Analog Adapter (see Chapter 3:

CallFinder Server Installation).

Safety Warnings

• Use this product only with UL- and CUL-listed computers (US).

• Never install phone wiring during a lightning storm.

• Never install a phone jack in a wet location unless the jack is specifically designed for wet locations.

• Never touch uninsulated phone wires or terminals unless the phone line has been disconnected at

the network interface.

• Use caution when installing or modifying phone lines.

• Avoid using a phone during an electrical storm; there is a risk of electrical shock from lightning.

• Do not use a phone in the vicinity of a gas leak.

• To reduce the risk of fire, use only 26 AWG or larger telephone line cord.

• This product must be disconnected from power source and telephone network interface when

servicing.

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Multitech CF220 Guide de l'utilisateur Page 5