Mitel SX 200 ML PABX Instructions Guide

Features 
Trunk Dial Tone Detection 
Description After accessing a trunk the system tries to detect dial tone on it. If dial tone 
is detected before time-out, the system begins sending digits. If no dial tone 
is detected after the time-out period and limited wait is specified, the system 
automatically begins sending digits. Otherwise it removes the trunk from 
service and indicates an alarm. Dial tone detection, without the alarm, can 
also occur in the middle of trunk dialing; see Automatic Route...

Features Description 
. 
. 
. 
. 
A trunk does not need to be in a trunk group to originate a call. 
. Trunk groups can have circular or terminal hunting.  A maximum of 50 trunks are permitted in an individual trunk group. 
A trunk may be a member of only one trunk group. 
Individual trunks must be programmed before they are entered into 
trunk groups. 
Direct trunk select and private trunk line trunks must be in trunk groups 
before outgoing calls can be made on the trunk lines. 
Direct trunk select and...

Features 
Conditions The following conditions apply to this feature: 
. 
. 
. 
. 
. 
If the DID trunk sends less digits than expected, the trunk receives 
reorder tone from the PABX system after the inter digit time-out (I 5 s). 
DID trunks can dial any access code for any type of device. 
DID trunks can dial Account Codes if running software loads F41 .O and 
above. 
An extension with Option 226 (Inward Restriction DID) in its COS cannot 
receive a call directly from a DID trunk. It is treated by the...

Features Description 
Trunk Operation - Direct Inward System Access (DISA) 
Description 
The DISA feature allows an external caller to access the system by dialing 
the directory number of a special DISA trunk and then dialing a security 
code. After the code is dialed, the system returns dial tone to the caller, 
who may then access features in the DISA trunk’s COS except those which 
require a switch-hook flash. 
Optionally, the external caller can be forced to enter a special account code 
rather than...

Features 
l If the DISA trunk caller cannot complete a call then the caller must hang 
up and try again. 
l If there is no DTMF receiver available for dialing when the DISA trunk 
originates a call, the initial answer delay period is extended indefinitely 
until a DTMF receiver is available. 
l No call progress tone is provided by the PABX to the trunk in the initial 
answer delay period. 
l Up to seven digits can be absorbed from the trunk. 
l Access to the allowed features is controlled by the COS...

Features Description 
Trunk ODeration - Non-Dial-in CO 
Description 
CO trunks usually carry calls between the local central office and the PABX. 
Calls arriving on CO trunks are assumed to be outside callers. Callers 
therefore receive different call progress tones. Call handling differs from tie 
and DISA trunk type calls, which are assumed to be internal calls. 
CO trunks are assigned an origination point for DAY, NIGHT I, and NIGHT 
2 service. They can optionally be assigned as a dedicated line on a...

Features 
l If no routing points are programmed in form 14 and there is no key 
appearance of the trunk, the trunk will not ring. 
Programming Select options for the specific trunk circuits via CDE Form 14 (Non-Dial-In 
Trunks) for incoming calls. 
Enable COS Option 812 (Loop Start Trunk to ACD Path Connect) to allow 
loop start trunks to access the ACD feature. 
Refer to the Automatic /?oute Selection and To// Control Practice, for the 
selection of options for outgoing calls. 
Operation None. 
Trunk...

Features Description 
Programming 
To program a trunk to ignore incoming DTMF digits, enable COS Option 
801 (Incoming Trunk Call Rotary) for the trunk. 
Operation None. Tie trunks dialing extensions with Do Not Disturb enabled are handled 
in the same way as extensions. 
Tie trunk dialing follows the same rules as for extensions. 
Up to 7 digits can be absorbed and 2 digits can be prefixed. 
The prefix digits are used for matching access codes only after the Tie 
trunk has dialed at least one digit that...

Features 
l For the reorder tone case, if there is no point programmed for the current 
NIGHT/DAY service then the trunk is dropped; Serial trunks recall. 
l An LDN key cannot be the routing point. 
l For recall situations, the tenant of the called party is used to determine 
the rerouting point. When a logical line is called, the tenant of the first 
appearance of the line is used. When a hunt group is called, the tenant 
of the first member of the hunt group is used. 
l The feature does not operate...

Features Description 
Trunk Support - Direct Inward Dial (DID) 
Description The following types of DID trunks are supported: 
l Wink Start 
l Delay Dial 
l Immediate Dial. 
DID trunks support Tie, CO, DID, and DISA operation. 
Conditions The following conditions apply to this feature: 
l Digital DID trunk cards are incoming only. 
l Digital DID trunk cards do not support DISA type operation. 
Programming Enter the trunk into the system’s physical configuration table via CDE Form 
01 (System...