Basic Configuration For Sip Telephony Over The Internet; Prerequisites; Activating Sip Telephony Over The Internet - Alcatel-Lucent Extended Communication Server Installation & Configuration Manual

Chapter
13
plug-in requires Internet Explorer 6 (or higher) and ActiveX must be enabled.
To implement this solution, see
13.2

Basic Configuration for SIP Telephony over the Internet

After reading this section, you will be able to carry out SIP telephony over the internet between
two users connected on Virtual Desktops.
Note:
In the example below, the Extended Communication Server is the DNS (Domain Name System) server
for the domain name used for SIP telephony over the internet.
13.2.1

Prerequisites

- The DNS service must be activated on the Extended Communication Server.
- A certificate must be created for the domain name used for SIP telephony over the
internet. For more information on certificate creation, see
Security Management § Creating a user certificate
- The following ports must be authorized for user stations behind a firewall:
• Port 5061 TCP from the computer to internet
• Range 8000:9000 TCP/UDP from the computer to internet
13.2.2

Activating SIP Telephony over the Internet

To configure and activate SIP telephony over the internet:
1. Select the Service management > Telephony over Internet (VoIP - SIP) >
Configuration menu.
2. Select the Basic Configuration tab.
13-2
§ Adding a Click to Call Button on a Web Site
Figure 13.3: Web Accessibility
module Installing the system -
.
.