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6.1
OPERATION OF SL-1 ADAPTIVE INTEGRATION
This chapter explains the PBX and Octelt 200/300 configuration requirements for correct operation of
SL-1 Adaptive Integration that includes message waiting indication and called party identification.
SL-1 Adaptive Integration uses an intelligent connection between Octel 200/300 and the SL-1 PBX. This
intelligent connection is provided via SL-1 Interface Card (SLIC). The SLIC appears to the SL-1 as SL-1
digit display phone sets. The lines to the display phone are called Links.
The interface between the SL-1 and the Octel 200/300 enables the following:
Message waiting indication (MWI) — control of message waiting lamps on PBX stations.
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Called party identification (CPI) — identification of the source and original destination of calls
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forwarded to the Octel 200/300. The Octel 200/300 can process the call and provide call coverage
based on the type of call and desired coverage.
Any information that can be provided to an SL-1 display phone station (either on the display itself or by
the LEDs) is available to the Octel 200/300. This information includes the following:
The extension number of an internal station calling the Octel 200/300 directly.
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The calling and called extension numbers of internal calls forwarded to the Octel 200/300. On
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external calls, the calling extension number is replaced by the trunk access code and member
number.
The trunk access code and member number of external calls that have been directed to the Octel
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200/300 for primary answering.
.
The SL-1 does not provide information to the Octel 200/300 regarding whether a call is forwarded
because the called extension was busy, not-answered, or call forwarded-all calls.
Personal Assistance operates in conjunction with called party identification for integrated systems. For
many applications, Personal Assistance and Auto-Transfer to Assistance are required. For details
regarding these two features, refer to the Feature Description volume, Customizing Mailbox Features
chapter, for more information.
.
Due to the way the SL-1 operates, the Announce to Intercept feature on the Octel 200/300
associated with Personal Assistance operates differently than with other phone systems.
When a caller is automatically transferred to an intercept whose extension is 0, the SL-1 sets up a
conference call between the caller, the intercept, and the Octel 200/300. The caller hears the
prompt "Connecting forwarded call, (name) is (unavailable)." To avoid the conference, the
intercept extension must be a three or four digit number. If the console is assigned a three or four
digit number, all callers to the operator would have to enter those digits. Announce to intercept
does operate correctly for non-zero extensions.
Message Waiting Indication. With the MWI feature, the Octel 200/300 can activate and deactivate
telephone message waiting indicators. Refer to the following section in this chapter, SL-1 PBX
Requirements, Customer Telephones, and Configuration.
.
In large configurations with over 300 mailboxes, there may be delays in message waiting
activation and deactivation under certain circumstances (e.g., broadcast messages). Large
configurations can create a high volume of message waiting commands within a short period of
time. People may notice a delay in their lamps being turned ON or OFF.
PB60019-01
Northern Telecom SL-1 Adaptive Integration
Octel 200/300
6-1
S.4.1
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