Functions

• Instant Messaging
• on-Premise web conferencing
• Audio/Video conferencing
• Telephony

Architecture

Editions

• Standard Edition ( small/ medium )organizations

All scenarios / Functionalities located on the server

• Enterprise Edition( medium / Big) organizations
  • Consolidated configuration

All functions/Scenarios located on front end servers

• Expanded configuration

Each Function is configured on a standalone server

Servers

1. Front End Servers( All functions)
2. Perimeter servers
3. Application servers
4. Active Directory servers.

( telephony and conferencing servers have to be stand alone servers)

 

Telephony

Basic Telephony Components

PSTN is a network of public circuit-switched telephones across the world

ISDN PRI is a voice and data service that provides high-volume access to PSTN

A PBX

A telephony gateway

 

Functionality Of Telephony Solution

1. Basic call control
2. Advanced call control
3. Inbound call options
4. Call forwarding
5. Voice mail