Remote Pim Over Ip System Outline - NEC UNIVERGE NEAX 2000 IPS General Description Manual

Remote PIM over IP System Outline

DMR
When IPS and 2000 IPS PIM are installed at Remote Site, and connected to a Main Site over
IP network, the Main Site system controls and maintains the operation of Remote Sites as one
single system. If a communication failure occurs between the Main Site and Remote Site, the
Remote Site automatically changes over to a survival mode and operates as a stand-alone system.
DMR
IPS : IPS Distributed Model Remote (with PN-CP31-D)
IPS PIM: IPS (with PN-CP24-D)
Outline of System Operation
The MP card of Main Site controls call processing, and Remote Site follows the Main
•
Site in normal operation mode.
Remote Site can accommodate analog Single Line telephones, Dterm, PS, DtermIP,
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and LT/AP cards.
Local Switch (TDSW) at Remote Site connects an outside party when the Remote
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Site is directly connected to the PSTN/GSTN.
In the case of connections between Main Site and Remote Site, or Remote Site and
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Remote Site, the voice path is connected via Peer-to-Peer or IP-PAD.
If the communications between Main Site and Remote Site are interrupted, the
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Remote Site starts a survival mode operation after the system reset.
Outline of Survival Mode Operation
Remote Site system watches a Keep Alive signal sent from Main Site regularly.
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If a line failure occurs (Keep Alive signal is not received), Remote Site resets the
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own system and starts survival mode operation as a stand-alone system to control the
call processing within the Remote Site.
During survival mode operation, Remote Site system checks regularly whether the
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communications with Main Site is possible or not. When the Remote Site regards that
the communications are possible, the Remote Site will change over to the normal
mode to communicate with the Main Site automatically or manually.
Outline of Survival Mode Operation
This feature displays the link state between Main Site and Remote Site on the
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designated Dterm or DtermIP at both sites, and allows users at both sites to notice the
link failure.
UNIVERGE NEAX 2000 IPS General Description
Issue 5
CHAPTER 2 SYSTEM CONFIGURATION
Page 43