NEC 2000 IPS Server User Manual


 
CHAPTER 2 SYSTEM CONFIGURATION
NEAX 2000 IPS General Description Page 43
NDA-24345, Issue 3
The available IP-PAD card in the Remote Site is only PN-32IPLA-A/PN-8IPLA.
For the system capacity of ISDN system or CCIS system, refer to the system capacity of each
system manual. Set the whole Remote PIM over IP system within the system capacity and be
sure to mount the handler card in the Site where the interface card is installed.
The number of terminals/trunks accommodated at one Remote Site should be a maximum of
256. This is the sum of maximum 128 physical ports (one built-in FP), maximum 128 IP
ports (two Virtual FP), and AP ports such as ISDN, etc.
Following is connected to the LAN port of the MP card at Main Site.
Peer-to-Peer CCIS, OAI, MAT
The highway channel for LT card is allocated to the Main Site with 512 ports and each
Remote Site with 128 ports.
Conditions for Survival Mode at Remote Site
Remote Site starts survival mode operation in the following cases.
- 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 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 by
CAT or MAT” (Fault occurrence kind No. 01) is registered to the MP card of Remote Site. In
addition, “Communication error occurrence between Main Site and Remote Site” (Fault
occurrence kind No. 42) 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 Main
Site are possible. When the Remote Site regards that the communications are possible,
“Communication error restoration between Main Site and Remote Site” (Fault occurrence
kind No. 52) 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 are
possible, manual changeover (system reset) is required. Automatic changeover (re-
connection to Main Site) is also selectable in system data programming (CM0B Y=31-
60>51, 53). At the automatic changeover, Remote Site system is initialized and the calls on
going are disconnected due to the reset of terminals.
During survival mode operation, it is not possible to originate/terminate calls to/from stations
at other sites.