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Chapter 3 — DPNSS1/DASS2 features description and implementation Page 751 of 1536
Feature implementation
— LD15- In the Customer Data Block, define the Loop Avoidance Limit for
DPNSS1 calls or the Tandem Threshold Limit for ISDN calls.
• If the ISDN and ICCL packages are equipped, enter YES to the
ISDN prompt. This causes the TNDM prompt to be displayed. In
response to the TNDM prompt, enter a value from 0-(15)-31 to
define the Tandem Threshold Limit for ISDN calls.
• If the ISDN and ICCL packages are not equipped, the ISDN prompt
does nor appear. The TNDM prompt is displayed automatically. In
response to the TNDM prompt, enter a value 0-(15)-25 to define the
Loop Avoidance Limit for DPNSS1 calls.
DPNSS1 Message Waiting Indication
With the DPNSS1 Message Waiting Indication (DMWI) feature, Meridian
users can subscribe to a third party voice message system across a Digital
Private Network Signalling System No. 1 (DPNSS1) network.
When provisioned, this feature provides a means to pass Message Waiting
Indication across a private DPNSS1 network with Meridian 1 and other third
party PBXs. This feature allows the Meridian 1 to recognize DPNSS1
Non-Specified Information (NSI) from a third party voice message node.
This recognition capability allows a voice message system located on another
node to notify or cancel Message Waiting Indication for Meridian 1 users.
Figure 109 illustrates DPNSS1 Message Waiting Indication.
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