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 Selection. 
Conditions The following conditions apply to this feature: 
l Enabling System Option 48 (Limited Wait For Dial Tone) disables COS 
Option 805 (Trunk No Dial Tone Alarm). 
l The no dial tone alarm time is set at IO seconds. 
l When the trunk is removed from service, the party dialing on the trunk 
ends dialing and is given busy tone. 
l 50 simultaneous dial tone detections can occur in the system at any 
one time. 
l If dial tone detection resources are not available and the alarm is 
enabled then the trunk is removed from service. If the alarm is not 
enabled then dial tone is assumed to have been supplied and dialing 
commences after a short pause. 
Programming Set System Option 48 (Limited Wait for Dial Tone) for l-15 seconds. 
To program a trunk to wait the limited time for dial tone, select COS Option 
802 (Limited Wait for Dial Tone) for the trunk. 
To enable the no dial tone alarm for a trunk, enable COS Option 805 (Trunk 
No Dial Tone Alarm). 
Operation None. 
Trunk Groups 
Description 
Trunk groups are defined and used in the ARS forms in CDE to control 
extension access to trunks, to define trunk options, and to apply features 
to trunk groups. For further information, refer to the Automatic Route 
Se/ection and To// Control Practice, and to the Customer Data Entry 
Practice. 
Conditions The following conditions apply to this feature: 
l SMDR is applied to trunks on a per trunk group basis; refer to the Station 
Message Detail Recording Practice. 
l A maximum of 50 individual trunk groups are available. 
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							Features Description 
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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 private trunk line trunks are never hunted from 
a trunk group. 
A trunk is selected from a trunk group if it is idle, if it is not being seized 
by another party, if a no seize alarm is not pending and if the caller and 
the trunk can connect together. 
Programming 
Program trunks into Trunk Groups via CDE Form 16 (Trunk Groups).. 
Each trunkgroup may also be given a unique name via CDE Form1 6 (Trunk 
Groups). 
System Option 49 - Pseudo Answer Supervision Timer applies to all trunks 
in the system. 
Refer to the Automatic Route Selection and Toll Control Practice. 
Operation None. 
Trunk Operation - Direct Inward Dial (DID) 
Description 
The DID trunk type is one of the four trunk types, independent of the 
hardware actually used to support the types, used in the system. 
DID trunks allow incoming trunkcalls to reach extensions without attendant 
intervention or assistance. The length of the incoming number, the number 
of digits to be absorbed, and a prefix digit, if required, can also be specified 
through CDE programming. 
Calls arriving at the PABX on DID type trunks are assumed to be outside 
calls. Callers therefore receive different call progress tones. Call handling 
differs from tie and DISA trunk type calls, which are assumed to be internal 
calls. 
For the hardware that supports the DID trunk type operation, see Trunk 
Suppot? - Direct Inward Dial (DID), Trunk Suppoti - Tl, and Trunk Suppot? 
-E&M. 
Also see DID/Dial-In/Tie Intercepts. 
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Conditions The following conditions apply to this feature: 
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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 system as 
an illegal number. 
Calls attempted using vacant or illegal numbers can be routed to 
answering points for completion; see ///ega/ Access Intercept and 
Vacant Number Intercept. 
DID trunks receive ringback tone when calling and camping onto a busy 
device. They receive busy tone if they reach a busy device and no busy 
intercept occurs (see D/D/Dia/-/n/Tie htercepts) and the trunk cannot 
camp on (see Camp@. If it can campon, it does so immediately. 
DID trunks ignore the DND feature if enabled on the called extension 
if there is no Do Not Disturb Routing for the called extension’s tenant; 
also see DID/Dial-In/Tie Intercepts. 
DID trunks are answered before being connected to a recording device. 
If there is no DID rerouting, DID trunks ignore the DND that is enabled 
on the called party. 
The attempt to call the destination is done only when the specified 
number of digits to be received on the trunk have been received. Extra 
digits are ignored and no matches are done for access codes that 
contain less than the specified number of digits. 
Digits are absorbed before the prefix digits are inserted. 
The trunk may be programmed to ignore incoming DTMF digits, and 
recognize only rotary digits. 
A DTMF receiver is needed when a DID trunk originates. If there is no 
receiver available then the trunk waits indefinitely until a receiver is 
available. Digits received on the trunk are stored and processed when 
a receiver is available. The Traffic Measurement feature can be used 
to track the wait for receiver. 
If a seize error occurs on a DID trunk then the trunk is given reorder tone. 
Prefix digits are used for matching access codes only after the DID trunk 
has dialed at least one digit that is not absorbed and the expected 
number of digits have been received. The prefix digits by themselves 
cannot be used to match an access code. 
Programming To program a trunk to ignore incoming DTMF digits during origination of the 
call, enable COS Option 801 (Incoming Trunk Call Rotary) for the trunk. 
Program a DID trunk in CDE Form 15 (Dial-in Trunks). 
Operation 
None. 
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							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 the standard DISA security code. See Verified Account Codes 
(Special DISA). 
DISA trunks can be supported on many different hardware types. See Trunk 
Supper? - Tl, Trunk Suppot? - Tie, Trunk Supporf - E&M. 
A trunkcan be programmed as DlSAat all times, or during night service only. 
Conditions 
The following conditions apply to this feature: 
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2-294 After the trunk originates, the system waits a programmable time, and 
then answers the trunk; then dial tone is returned. 
After the preprogrammed wait, the system answers the trunk before 
dialing begins. 
The outside caller must use a DTMF telephone. 
The security code may be one to five digits in length. 
The same security code applies to all DISA calls. 
If a caller dials an invalid code, the call is dropped only after three digits 
have been dialed. This makes it a bit more difficult for unwanted callers 
to determine what the security code is. This does not apply when a 
verified account code is used. 
Three service modes -- DAY, NlGHTl, or NIGHT2 -- are available to 
tenant groups (see A/jght Sewices). If COS Option 810 (DISA During 
Night Service Only) is enabled for a trunk, the DISA feature is disabled 
for the trunk’s tenant during DAY service mode. Therefore, during DAY 
service mode, an external caller can call in on the trunk without entering 
the DISA security code. 
Reorder tone is not returned to the caller when an invalid security code 
is dialed. 
A switch-hook flash is not possible on a DISA trunk. 
DISA trunks follow the illegal, do not disturb and vacant number routing 
as an internal industry-standard telephone would. 
A DISA trunk is given the same call progress tones as an internal 
extension. 
The Alternate Trunk Recall feature applies to DISA trunks. 
If a loop start CO trunk is the hardware supporting the trunk then loop 
start interconnection rules apply and the restrictions on loop start CO 
trunks applies; see Device hterconnection ConPo/and Trunk Operation 
- Non-dial-in, 
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							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 assigned to the 
trunk. 
l The features available to DISA trunks include: 
- account codes 
- ARS 
- console hold slot retrieve 
- paging 
- system abbreviated dial. 
Programming If the trunk is to be a DISA trunk during Night Service only, enable COS 
Option 810 (DISA During Night Service Only) for the trunk, and set the DISA 
trunk DAY service routing in CDE Form 19 (Call Rerouting Table) for the 
trunk’s tenant. 
Select options for the DISA trunk type via CDE Form 13 (Trunk Circuit 
Descriptors). 
Select options for the specific DISA trunk via CDE Form 15 (Dial-In Trunks). 
Assignment of a DISA circuit descriptor to a trunk changes the trunk to a 
DISA trunk. 
Assign a DISA access code to Feature 19 (Direct Inward System Access); 
see Attendant DISA Code Setup. 
Select the DISA answer timer via System Option 54(DlSA Answer Timer: 
l-8 Seconds). 
Enable COS Option 812 (Loop Start Trunk to ACD Path Connect) to allow 
loop start DISA trunks to access the ACD feature. 
Operation To access the System: 
Dial the required directory number from a DTMF telephone. 
The system waits the DISA answer time before answering the trunk and 
supplying dial tone. 
Dial the DISA security code - dial tone is returned again, 
Dial the required feature access code or extension. 
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							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 
SU/?%SE~ telephone. 
For the hardware that supports CO trunk type operation, see ~wIJ~SU~~O~? 
- CO (LUGS), Trunk Suppot? - Tie, Trunk Suppot? - DID, Trunk Suppo~? 
-E&M, and Trunk Suppot? - Tl. 
The NIGHT1 or NIGHT2 service for CO trunks can be changed directly from 
the Attendant console; see Night Service Flexible. 
Also see Direct-h Lines. 
Conditions The following conditions apply to this feature: 
l A DISA trunk may be programmed to be a CO trunk type during day 
service. See Trunk Operation - Direct Inward System Access (DISA). 
l Connection checking is done between the trunk and the destination 
point when the trunk originates. 
l If the trunk origination is blocked then the trunk stays idle and the PABX 
does no further processing of the call. 
l Trunks are always answered before listening to a recording device. 
l The processing of the origination follows the operation of call rerouting; 
see Call Rerouting. 
l For trunks assigned to DTS or private trunk lines, the trunk originates 
to the line and ignores the NIGHT/DAY points programmed. 
l The audio heard by the caller before answer depends upon the 
hardware/circuit descriptor connected to that trunk. For CO trunks, CO 
tones provided by the central office are heard; for trunks, based on 
dial-in hardware circuits, PABX call progress tones provided by the 
PABX are heard. 
l The trunk receives ringback tone when it camps on to a device. 
l The Device Interconnection feature can be used to prevent loop start 
trunk interconnection. 
l If a CO trunk in a bay fails to get resources required for a call when it 
originates, the trunk will wait for resources to become available. 
l If the trunk is routed out to an external trunk call and the CO trunk has 
not been answered yet, the CO trunk is answered when dialing is 
finished on the outgoing trunk. 
l CO trunks cannot dial ARS directly; however, ARS can be accessed 
via system abbreviated dial. 
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							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 Operation - Tie 
Description 
The Tie trunk is one of four trunk types, and independent of the hardware 
actually used to support the types, used in the system. 
Tie trunks allow incoming trunk calls to reach extensions directly, without 
attendant intervention or assistance. The number of digits expected from 
the trunk is unknown. Digit absorption and adding prefix digits can be done. 
Calls coming into the PABX on Tie type trunks are assumed to be callers 
from inside the company, similar to DISA trunk type calls. The callers 
therefore receive the same call progress tones that internal callers hear 
and may have access to many extension features. 
For the hardware that supports the Tie trunk type operation, see Trunk 
Suppot? - E&M, Trunk Suppot? - Tl, and Trunk Suppot? - Direct In ward Dial 
(DID). 
See Dia/ Tone Disab/e for dial tone control for the Tie trunk. 
Conditions The following conditions apply to this feature: 
l Tie trunks have access to the following extension features: 
- account code 
- ARS 
- console hold slot retrieve 
- directed pickup 
- hold retrieve 
- paging 
- system Abbreviated Dial. 
l For Tie intercept handling, see D/D/Dia/-/n/Tie htercepts. 
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							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 is not absorbed. The prefix digits 
by themselves cannot be used to match an access code. 
The limit to the number of digits that a Tie trunk can dial is the same as 
for an internal extension (25). This includes the prefix digits but not the 
absorbed digits. 
The trunk may be programmed to ignore incoming DTMF digits, and to 
recognize only rotary digits. 
A DTMF receiver is needed when a Tie trunk originates. If there is no 
receiver available then the trunk waits indefinitely until a receiver is 
available. Digits received on the trunk are stored and processed when 
a receiver is available. The Traffic Measurement feature can be used 
to track the wait for a receiver. 
For incoming answer supervision when directed to ARS, see Tandem 
Operation. 
Trunk Recall 
Description 
The feature provides an alternate recall point for trunks in the system. The 
alternate recall point can be specified for each tenant and each NIGHT/DAY 
service. Under the following conditions, trunks are rerouted to the 
alternative call point: 
l for all trunk types, when an extension with a trunk on consultation hold 
is listening to reorder tone and times *out, the trunk is removed from 
consultation hold and rerouted. 
l for DISA and CO trunks, when a trunk recalls from campon or ringing 
an extension; see Reca//. 
Conditions The following conditions apply to this feature: 
l This feature does not apply to DTS or private trunks ringing into the 
SUERSET telephone where the line appears. 
l For the reorder tone case, the reroute is done before recalling serial 
trunks. 
0 For the reorder tone case, the tenant group of the extension is used to 
determine the routing point. 
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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 when calling an LDN, Night Bell, or 
console. 
Programming 
Operation In CDE Form 19 (Call Rerouting Table), program the recall points for 
Non-Dial-In Trunk Alternate Recall Point in the tenant of the called party. 
None. 
Trunk Support - CO (LWGS) 
Description The system supports CO (LS/GS) trunks with the LS/GS trunk card. 
For loop start CO trunks that do not provide release supervision, take 
caution when routing to auto-answer telephones or to UCDIACD 
applications that do not provide termination for a music/recording 
sequence. In these cases, since the system does not disconnect the trunk, 
the call may stay up indefinitely. 
Conditions None. 
Programming Enter the trunk into the system’s physical configuration table via CDE Form 
01 (System Configuration). 
Select options for the CO trunk type via CDE Form 13 (Trunk Circuit 
Descriptors). 
Select options for the specific trunk circuits via CDE Form14 (Non-Dial-In 
Trunks) for incoming calls. 
Refer to the Autormtk Route Se/ectjon and To// Control Practice, for the 
selection of options for outgoing calls. 
Operation None. 
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							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 Configuration). 
Select options for the DID trunk type via CDE Form 13 (Trunk Circuit 
Descriptors). 
Select options for the specific trunk circuits via CDE Form 15 (Dial-In 
Trunks). 
Operation None. 
Trunk Support - E&M 
Description E&M trunks are supported with the E&M Trunk module on the Universal 
Card. 
e 
The signaling schemes supported include: type I and type V, 2-wire or 
4-wire. 
E&M trunks support Tie, CO, DID, and DISA operation. 
Conditions None. 
Programming Enter the trunk into the system’s physical configuration table via CDE Form 
01 (System Configuration). 
Select options for the E&M trunk type via CDE Form 13 (Trunk Circuit 
Descriptors). 
Select options for the specific trunk circuits via CDE Forms 14 (Non-Dial-In 
Trunks) and CDE Form 15 (Dial-In Trunks). 
Operation 
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None. 
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