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F: SIP Servers - Servers (D) located at your Internet Telephony Service Provider
(ITSP) which process outgoing calls from the X2002 and direct them to IP phones
on the Internet or traditional phones on the PSTN.
Figure 2 SIP Devices and the X2002
1.1.2 PBX Telephony Features
The X2002 allows you to set up and manage features on an internal telephone
network without relying on your telephone service provider. The following are just
a few examples:
• Conference calls
• Voicemail
• Call Forwarding
The X2002 integrates with your IP network. For example you can:
• Import an LDAP-based (Lightweight Directory Access Protocol) contact list to
serve as the phonebook for the IP phones on your network.
• Set up the X2002 to send users email notifications or complete voice messages
as attachments when they receive voicemail.
X2002 User's Guide
ITSP
PSTN
F
A
B
Chapter 1 Introduction
E
D
C
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