NEC UNIVERGE NEAX 2000 IPS, General Description Manual

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CHAPTER 1 INTRODUCTION
UNIVERGE NEAX 2000 IPS General Description
Page 23
Issue 5
Advantages
The system regards the terminals accommodated in both Host Site and Remote Site as the
extensions in the same office. Feature transparency is superior to CCIS.
Remote PIM over IP can accommodate AP cards such as ISDN PRI and T1.
This feature can reduce the bandwidth used on the WAN that is connected to CO lines at Remote
Site, rather than Dterm
IP at remote locations.
Since all Remote PIM over IP sites are treated as extensions in the same office, software and
applications only have to be implemented in the host site. This provides centralized use of
application for example distributing ACD agents in the DMR locations. CCIS requires each
location to have separate software and applications.
CCIS over IP can be combined with Remote PIM over IP to accommodate larger network
configurations. Up to 255 host sites can be connected via CCIS, each host site can have up to 30
Remote PIM over IP locations.
Service Conditions
1. Host site can be UNIVERGE
NEAX
2000 IPS, UNIVERGE
NEAX
IPS
DML
, or UNIVERGE
NEAX
2000 Retrofit system. Remote PIM over IP is available in any combination of the
following CPUs.
Main Site: CP24-D, CP27-B, CP31E, CP26-B, CP28-B
Remote Site: CP31-D, CP24-D, CP26-D
2. Software and Key CD for the whole system must be loaded at the Host Site. No software
or key’s can be loaded into the Remote Site.
3. All system data changes for the whole system must be performed in the Host Site. No
system data changes can be done in the Remote Site.
4. The CPU card at Remote Site has the same system data as the CPU at Main Site; the Host
Site automatically downloads its system data to the Remote Site at the time of setup. In
normal operation, Host Site automatically copies the system data to Remote Site through
the network once a day.
5. Remote Site automatically operates by itself (survival mode) when Keep Alive signal
(sent every 30 sec) between the Host Site and Remote Sits is interrupted. When Keep
Alive is interrupted the Remote Site is reset to change the operation from normal mode to
survival mode.
6. Remote Site in survival mode checks at 30 seconds intervals if the communications to
Main Site are possible. When Keep Alive is detected, the Remote Site automatically is
reset to change the operation from survival mode to normal mode.
7. When unstable conditions occur in the network, the Remote Site can be manually set to
survivable mode (override automatic) until stability in the network is established. This
prevents the Remote Site from resetting normal mode to survivable mode etc.