NEC UNIVERGE NEAX 2000 IPS, Общее описание устройства

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CHAPTER 1 INTRODUCTION
UNIVERGE NEAX 2000 IPS General Description
Page 21
Issue 5
Remote PIM over IP
Remote PIM over IP targets users who have 1-30 relatively small offices that accommodate 10-
30 extensions at the Remote Site. When
UNIVERGE
NEAX
IPS
DMR
and UNIVERGE
NEAX
2000
IPS PIM are installed at remote site, and connected to a UNIVERGE
NEAX
2000 IPS or
UNIVERGE
NEAX
IPS
DML
at main site over IP network, the Main Site system controls and
maintains the remote DMR 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-D)
•
IPS PIM: IPS Distributed Model (with CP24-D)
The UNIVERGE
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
UNIVERGE
NEAX
IPS
DMR
supports up to 128 peer-to-peer IP stations and
56 TDM ports in a single modular chassis. Up to two chassis can be stacked providing maximum
capacity of 112 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-D 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 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