NEC 2000 IPS Server User Manual


 
CHAPTER 1 INTRODUCTION
NEAX 2000 IPS General Description Page 20
NDA-24345, Issue 3
Remote PIM over IP
Remote PIM over IP targets users who have 1-15 relatively small offices that accommodate 10-30
extensions at the Remote Site. When IPS
DMR
and 2000 IPS PIM are installed at remote site, and
connected to a 2000 IPS or IPS
DM
at main site over IP network, the Main Site system controls and
maintains the remote DM and PIM operation 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.
IPS
DMR
: IPS Distributed Model Remote (with CP31-A)
IPS
DM
: IPS Distributed Model (with CP24-A/B)
The NEAX IPS-DMR is designed primarily for distributed IP networking but also supports
traditional analog and digital trunks for connection to the Public Switched Telephone Network
(PSTN). The NEAX IPS-DMR supports up to 128 peer-to-peer IP stations and 40 TDM ports in a
single modular chassis. Up to two chassis can be stacked providing maximum capacity of 80 TDM
ports while still supporting as many as 128 peer-to-peer IP stations.
Note: The MP card at Remote Site has the same system data as the CPU at the Host Site; the Host Site
automatically downloads system data to the Remote Site at the time of setup. In normal operation, Main Site
automatically downloads a copy the system data to Remote Site through the network once a day.
Because the CP31 is designed as a Remote PIM CPU, the following options that are built-in on the
CP24 are not available with the CP31:
No built-in modem.
No built-in DAT.
Only one RS Port.
No built-in DK (external/relay key).
No MN Alarm Indication
Network Conditions and Payload
Item Requirement Remarks
Protocol TCP/IP transparent
Maximum
Delay Time
120ms(one way)/240ms(return)
150ms(one way)/300ms(return)
Support the quality class A,
B of IP Telephone