NEC UNIVERGE SL2100 Manual page 12

UNIVERGE SL2100 Release 1.8 Overview

The timer of SIP Out of Range (Program 24-02-15) must be adjusted to the customer's network
environment. The SIP terminal with Push Proxy enabled may be unable to receive a call because its
default value is too short.
Conditions for Terminal Accommodation

Standard SIP Terminals with or without Push Notification enabled can be used on the same SL2100.

The PUSH Notification related data must be enabled on the ST500 VoIP Application configuration
screen. Refer to the manual for the ST500 VoIP Application for further settings.

While a ST500 VoIP Application with PUSH Notification enabled is logged in to the system, if
another ST500 VoIP Application with the PUSH Notification disabled/unsupported logs in with the
same station number, an override automatically occurs. The overridden ST500 VoIP Application,
the one with the PUSH Notification enabled, is logged out and not able to use this feature.

HTTPS connections are used for sending a PUSH Notification request. Depending on the network
configuration, it is necessary to assign Web Proxy-related data by the Program 10-76-04/05 in order
to relay through the Web Proxy.

When a calling party makes a call to the ST500 VoIP Application, the ST500 VoIP Application is not
called until the PUSH Notification is received and the registration to the SL2100 is completed.
During this period, the calling party continues to hear silence.

The clock of the SL2100 must be adjusted to the current time. A significant difference between the
set time and the current time may cause a connection failure to the PUSH Proxy.
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