NEC NEAX NDA-24349 - Manual (Page 23)

Chapter 1 Introduction
NEAX2000 IPS Request For Proposal (RFP) Reference Guide Page 1-17
NDA-24349, Issue 4
NEAX
®
2000 IPS
DMR
Introduction
The NEAX IPS DMR ( Internet Protocol Server Distributed Model Remote) is a NEAX IPS DM that
has been optimized for Remote PIM over IP applications. The NEAX IPS DMR uses the SPN-
CP31 as the Main Processor. The SPN-CP31 is a cost down CPU to compete with Mitel
3100, NBX25, and CISCO 2600 Series. This system targets users who have up to 15
relatively small offices that accommodate 10-30 extensions at the Remote Site.
The MP card at Remote Site has the same system data as that at Main Site, because Remote
Site automatically gets the data from Main Site at the time of setup. In normal operation, Main
Site automatically copies the system data to Remote Site through the network once a day.
Because the CP31 is a cost down CPU, the following options that are built-in on the CP24 are
not available with the CP31:
ƒ No built-in modem.
ƒ No built-in DAT.
ƒ Only one RS Port.
ƒ No built-in DK (external/relay key).
ƒ No MN Alarm Indication
System Outline
ƒ The MP card at Main Site controls system processing, and Remote Site follows the Main
Site.
ƒ Remote Site can accommodate most terminals and trunks such as D term , Single-Line
telephone, PS, D term IP, COT, ISDN, etc. The Attendant Concole, D term Attendant postion,
Add-on Module and DSS/BLF are not supported at the Remote Site.
ƒ Local Switch (TDSW) at Remote Site controls connections within the Remote Site if possible.
ƒ In the case of connections between Main-Remote and Remote-Remote, the voice path is
connected via Peer-to-Peer or IP-PAD.
ƒ If the communications between Main-Remote are interrupted, the Remote Site survives by
itself after the system reset.
Advantages
ƒ The system regards the terminals accommodated in both Main Site and Remote Site as the
extensions in the same office. Therefore, the service transparency is superior to CCIS.
ƒ Remote PIM over IP has no limitation of distance between Main and Remote.
ƒ Remote Site has a switching function at local. This provides the effective configuration of C.O.
line. In addition, the Remote Site can accommodate AP cards. This is an advantage to
accommodate ISDN lines especially.
ƒ The Remote Site survives by itself even if the link between Main and Remote is disconnected.
Therefore, the impact to users at Remote Site will be smaller if the link between Main and
Remote is disconnected.
ƒ This feature can reduce the bandwidth used on the WAN that is connected to CO lines at
Remote Site, rather than D term IP at remote location or the Media Converter (MC)
accommodation.