EliteMail VMS/EliteMail Limited Issue 3
Reference 13 - 3
Lamp
Light Lamps only. The port is dedicat ed to dialing out to light
message waiting lamps e xclusively. The port does not dial out to
deliver new messages or answer inc o ming calls.
Msg
Message Delivery only. The port is ded icated to dialing out to delive r
new messages exclusively. The port does not dial o ut to light
message waiting lamps or answer inc om ing calls.
A typical application uses onl y two po rt status codes: Answe r (Ans)
and Answer/Dial (A/D). The answer/dial ports are used for lighting
message lamps and delivering m es s ag es. 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 syste m gives
priority to answering inco ming calls quickly.
However, if the system is not promptly notifying subscribers that they
have new messages, the inco ming call load migh t be too he avy 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:
A dial-out port (A/D or Dial) used to call subscribers for message
delivery can be tied up for long periods by subscribers lis tening to
delivered messages. If this port is also used for lighting message
waiting lamps, this may delay du ality calls to light or extinguish
message waiting lamps, resulting in la mps remain ing lit long afte r a
message is heard or delays in lighting a lamp after a new mes sage
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 me ssage
waiting lamps or message deliv ery (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 b usy d ial ing ou t. Th is c an re sult in p ub lic
callers or subscribers receiving bus y s ign als 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 f or a vailable ports.