NEC UNIVERGE NEAX 2000 IPS - Manual (Page 253)

Chapter 13 Voice Over IP (VoIP)
UNIVERGE NEAX 2000 IPS Request for Proposal (RFP) Reference Guide Page 13- 11
Issue 6
Service Conditions on Remote Connections
1. The network between NEAX 2000 IPS and IP Enabled Dterm must meet the following requirement:
Waiting time for ACK signal: maximum 600ms (300ms recommended)
To check the above requirement, send Ping command from a PC to a remote IP Enabled Dterm
and see the result of the command (“Time” shows the time to receive ACK signal.). If the result
does not meet the above requirement, abnormal operation such as connection unavailable,
deterioration of voice quality or abnormal state of IP terminal may occur.
2. The remote IP Enabled Dterm can be connected to the network via either of the following devices:
Router
Dial-up router
Modem
Cable Modem
ADSL Splitter
3. The IP terminal can be assigned to Local Connection Mode or Remote Connection Mode by
entering the Administrator Mode of the IP terminal. After the operation mode of the terminal is
changed (Local to Remote, or vice versa), login operation is required again.
4. The differences between Local Connection Mode and Remote Connection Mode are as follows:
Item Local Connection Mode Remote Connection Mode
Confirmation to Connect
IP Terminal
1 time per minute
1 time per day
(10 minutes from 00:00 a.m.)
Clock Control
2000 IPS sends clock signal to
IP terminal on a minute basis.
2000 IPS sends clock signal to IP
Enabled Dterm when the IP
Enabled Dterm is logged in or the
clock data is entered by CM02.
5. Individual Location number can be assigned for Local Connection Mode and Remote Connection
Mode, on a station number basis, by system programming. The IP Enabled Dterm can work based
on the location number in each mode. When the Location number for the station is changed, login
operation is required again.
6. NAT (Network Address Translation) is supported using remote Dterm IP terminals only. For NAT
support a Global IP Address programmed in the NEAX 2000 IPS CPU is required.