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10.2-6 Integration Volume
10.2.3 MITEL SX-100/SX-200 ANALOG LIMITATIONS AND APPLICATION
RECOMMENDATIONS
The following sections outline limitations to Mitel SX-100/SX-200 Analog − Octel 200/300 Adaptive
Integration. Most of the limitations are due to limitations within the PBX itself; a few are the result of the
form of integration the Octel 200/300 uses with the Mitel PBX.
PBX Functional Limitations that Affect MWI
The following are limitations that affect Message Waiting Indication.
At least one Superset port from the PBX is required for message waiting control. This port must be
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restricted so that it cannot answer calls. Additional ports can be configured for MWI.
Message waiting indication for a Superset 4 display telephone appears as a callback message. The
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Octel 200/300 cannot be called back from a Superset 4 because the MIC message waiting port cannot
answer calls.
The PBX automatically cancels message waiting for Superset 4s after 24 hours. Use System
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Parameter 191 — HOUR TO REACTIVATE MSG WTG INDICATORS, to enable automatic
reactivation of message waiting indicators.
Message waiting indicators on a Superset 4 display telephone can be turned OFF by using the READ
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MSG feature and pressing the CANCEL softkey.
Superset 4 users should not be configured as sub-attendants, because once the Octel 200/300 has
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turned a single line phone's message waiting indicator ON, a completed call to any sub-attendant
turns the indicator OFF.
Once the Octel 200/300 has turned ON a Superset 4 display telephone's message waiting indicator,
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the Superset 4 periodically rings briefly to indicate that a message has been received.
The Octel 200/300 must call a phone to control its message waiting indicator. A phone may ring
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briefly while the Octel 200/300 turns its indicator ON or OFF.
The Octel 200/300 cannot control a phone's message waiting indicator while that phone is set for Do
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Not Disturb, or when that phone forwards on Busy-Forward or All-Forward. Also, the Octel 200/300
cannot control the message waiting indicator of a Superset 4 with AUTO ANSWER turned ON. This
conflicts with operation of CPI in some instances. For example,
If a phone forwards all calls to the Octel 200/300 for secondary answering, the Octel 200/300
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cannot control that phone's message waiting indicator until the phone is taken out of forward.
The same applies to a phone in Do Not Disturb.
If a person logs on from their own phone and the phone is set to forward on busy, the Octel
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200/300 cannot turn that person's message waiting indicator OFF until the person is off the
phone.
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Octel 200/300
S.4.1
If a phone is set to forward only on ring-no-answer, conflicts such as these do not occur.
Therefore, we recommend setting all extensions that use MWI to forward to the Octel
200/300 only on ring-no-answer. The drawback to this is that these extensions do not receive
internal call coverage when they are busy.
PB60019-01
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