NEC UNIVERGE NEAX 2000 IPS General Description Manual page 50

CHAPTER 2 SYSTEM CONFIGURATION
Conditions for Survival Mode at Remote Site
Remote Site starts survival mode operation in the following cases.
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- When the communications (Keep Alive signal) in every 30 seconds between
Main Site and Remote Site are interrupted for the predetermined time set by
CM0B Y=31-60>50 on normal mode operation.
- When Remote Site cannot be connected to Main Site or is not allowed connecting
to Main Site after the system reset of the Remote Site.
Remote Site is reset automatically to change the operation from normal mode to
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survival mode when it detects an interruption of the communications from/to Main
Site.
When Remote Site starts the survival mode operation, the fault information "Initialize
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by CAT or MAT" is registered to the MP card of Remote Site. In addition,
"Communication error occurrence between Main Site and Remote Site" is registered
to the MP card of Main Site at 20 seconds later from the predetermined time set by
CM0B Y=31-60>50.
Remote Site on survival mode checks at every 30 seconds if the communications to
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Main Site are possible. When the Remote Site regards that the communications are
possible, "Communication error restoration between Main Site and Remote Site" is
registered to the MP card of Main Site at 20 seconds later from the predetermined
time set by CM0B Y=31-60>51.
When Remote Site on survival mode regards that the communications to Main Site
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are possible, manual changeover (system reset) is required. Automatic changeover
(re-connection to Main Site) is also selectable in system data programming. At the
automatic changeover, Remote Site system is initialized and the calls on going are
disconnected due to the reset of terminals.
Service Conditions
Set the unique location number to each location group for proper setting of the IP-
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PAD channel selection and CODEC for voice compression.
The system clock at Remote Site synchronizes with the system clock at Main Site. If
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the communications to Main Site are interrupted, Remote Site does not synchronize
and operates at the hardware clock on the MP card of Remote Site.
Remote Site cannot accommodate the Virtual IPT and the IPT card (H.323).
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The service features requiring continuous voice transmission such as Background
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Music and Internal Zone Paging should not be used at Remote Site considering the
traffic on the network.
Multiple line service should not be used among different sites considering the traffic
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on the network.
Automated Attendant should not be used at Remote Site considering the traffic.
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Unavailable services at Remote Site are as follows.
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- Attendant Console, Desk Console, Add-On Module, and ISDN Terminal are not
mountable.
- Caller ID - Station is not available.
- CCIS is not available.
- All services using MP built-in DK or DK card are not available.
- MP built-in DAT and Digital Announcement Trunk (DAT) card are not available.
- RS Port No.1 is not available with CP31-D.
UNIVERGE NEAX 2000 IPS General Description
Issue 5
Page 46