NEC 750370 manual

EliteMail VMS/EliteMail Limited Issue 3

Lamp

Light Lamps only. The port is dedicated to dialing out to light message waiting lamps exclusively. The port does not dial out to

￿deliver new messages or answer incoming calls. Msg

Message Delivery only. The port is dedicated to dialing out to deliver new messages exclusively. The port does not dial out to light message waiting lamps or answer incoming calls.

A typical application uses only two port status codes: Answer (Ans) and Answer/Dial (A/D). The answer/dial ports are used for lighting message lamps and delivering messages. A general rule of thumb is to have one of every four ports set to A/D, with the rest set to Ans. By limiting the number of ports that can dial out, the system gives priority to answering incoming calls quickly.

However, if the system is not promptly notifying subscribers that they have new messages, the incoming call load might be too heavy for the system to get a chance to dial out and light message waiting lamps. In this case, you might want to assign A/D to an additional port, or dedicate one port to Dial out only (D). The system must have at least one port available for dialing out to use message waiting lamps and to deliver new messages.

￿Consider the following factors when assigning the port status codes:

Adial-out port (A/D or Dial) used to call subscribers for message delivery can be tied up for long periods by subscribers listening to delivered messages. If this port is also used for lighting message waiting lamps, this may delay duality calls to light or extinguish message waiting lamps, resulting in lamps remaining lit long after a message is heard or delays in lighting a lamp after a new message arrives.

If the system answers calls on a port that is relied on to dial out for delivering messages (A/D, A/M), the system ability to dial out may be

￿limited by incoming call traffic.

If the system has several ports dedicated to dialing out for message waiting lamps or message delivery (A/D, A/L, A/M, Dial, Lamp, Msg), too few ports may be left available for incoming calls, because most or all of the ports are busy dialing out. This can result in public callers or subscribers receiving busy signals when they try to call in.

It is best to give A/D, A/L, A/M, Dial, Lamp, or Msg status to the least busy port (typically the highest numbered port on a system) to allow incoming calls to naturally hunt for available ports.

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