Mitel SX-200 Documentation page 180

SECTION MITL9105/9110-096-105-NA
DIRECT INWARD DIAL (DID) TRUNKS
Page 126
Description
This feature allows DID trunks to be used in the system. The length of
the incoming number, the number of digits to be absorbed, and a
prefix digit, if required, may also be specified.
Conditions
If the DID trunk sends less digits than expected, the trunk will
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receive reorder tone from the PBX system after the interdigit
time-out (15 s).
DID trunks may access extensions, Hunt Groups or the Attendant,
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but not handsfree stations.
An extension with Option Number 43 (Inward Restriction DID) in
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its COS cannot receive a call directly from a DID trunk.
DID trunks can be used outgoing, only if special network equip-
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ment is provided (see CCSA).
DID trunks are rotary dial only, never DTMF. Incoming trunk calls
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to the Attendant always appear on LDN 4.
DID trunks may be programmed for Night Service assignments.
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Programming
When programming the trunk, the entry made after pressing the .
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First Digit - specifies the number of incoming digits (l-9).
absorbed (O-8).
incoming number after absorption (O-9). The maximum num-
ber of digits permitted after absorption and after adding the
prefix digit is four.
The trunk type must be specified as 3.
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If calls to vacant or illegal numbers are to be routed to the
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Attendant, System Option 135 (Intercept To Att.-DID,
CCSA, Vacant/Illegal or Dial-In Vacant/Illegal Access to the At-
tendant) must be selected. If this option is not selected, calls to
vacant or illegal numbers will receive reorder tone.
If calls to busy numbers are to be routed to the Attendant,
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System Option 253 (Call Forwarding - Busy System) must be
selected.
If calls to an extension that are not answered within the selected
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time-out period are to be forwarded to the Attendant, System
Option 254 (Call Forwarding - Don't Answer System) must be
selected.
If DID trunks are not to be connected to Non-CO trunks via the
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Attendant, System Option 133 (DID to Non-CO Trunks via Atten-
dant Inhibit) must be selected.
Assign an access code to Feature Number 20 (Alternate .Atten-
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dant Access Code). This provides an access number to the At- e*-'..
Dial-In,