First of all, the Applet-phone is a SIP User-Agent
with audio and text messaging capabilities. But i s also embedded in
an applet where you can use it as usual if your Firewall allow you to
use the UDP transport. If not, you can use TCP to carry your voice in a
voice messaging fashion. Your voice is recorded and encoded locally
then sent as a message, decoded and played back by your peer. Voice
messaging allow you to go through any Firewall, so that you can
continue to chat and talk with your friends from an applet !
Siproxd is a proxy/masquerading daemon for the SIP protocol.
It handles registrations of SIP clients on a private IP network
and performs rewriting of the SIP message bodies to make SIP
connections work via an masquerading Firewall (NAT).
It allows SIP software clients (like kphone, linphone) or SIP
hardware clients (Voice over IP phones which are SIP-compatible,
such as those from Cisco, Grandstream or Snom) to work behind
an IP masquerading Firewall or NAT router
Distributed applications, devices, and services appear in many different arrangements in an
enterprise. At your company, you probably access data from your intranet services, from
computers distributed throughout the company network, and from services across the Firewall out
on the Web. For example, you might access a calendar-sharing application or a financial
application to fill out expense sheets. Someone must maintain all these applications. Not only the
applications, but also the hardware that supports them must be maintained. Resource management
encompasses both applications and hardware. In fact, both application and hardware management
can be supported through the development of Java Management Extensions (JMX) resource
management software. This book will show how you can use JMX to manage and monitor all
your resources across an enterprise—both software and hardware.
