[asterisk-users] Asterisk Unified communication features

[James Mutuku]

Hi,
    I need to know if the following features are available on asterisk 
and their quality
     -SMS
     -Call control, budgeting and monitoring
     -Video conferencing
    -support for 500 extensions
    -fax
    -audio and video conferencing
and

1. Call accounting showing calls made
2. Call budgeting which bills the calls
3. Web access for all users
4. Centralized management and administration
5. Call barring when budget is exhausted
6. Budget utilization alerts to e-mail
7. Reports
a) Per extension
b) Per trunk
c) Per unit (business area)
d) Percentage utilization of the total budget


Thanks