Here is a list of producers of ready made, black box PBXs that are based on Asterisk (in no particular order):

EVINT UC

AAB Asterisk Consultant Lithonia GA

IP PBX/ Installation / maintenance / configuration of linux systems / servers VOIP Gatekeepers / Phones / devices.
Support for digium / openvox / sangoma / rhino E1 / PRI / FXO Digital / analog Telephony Cards /grandstream
Asterisk IPPBX Lithonia GA
Phone: +001 6783273761: Venkat Ramana (venkat)
venk777@gmail.com

Manufacturer of VOIP hardware: asterisk based pbx systems NANO and MEGA, asterisk cards and gateways
ALLO.com
Phone: +1 778 892 2877
andre@allo.com

Support work as hosted IP PBX solution
Features like IVR, inbound route, outbound route, web meetme, billing and invoice
Easy to upgrade to call center features
Web based management
sales@astercc.org

Business PBX units based on embedded, noiseless (no fans, no harddisks) units, Rackmount versions also available, including
Web based administration GUI, including multi customer functionality (optional)
SIP/IAX/ISDN trunking
custom made dialplan design available (upon request)

Manages instant calls directly from Outlook with Asterisk PBX base regardless of the manufacturer’s brand,
Facilitates work with your phone and collaborative work,
Works directly between Asterisk and Outlook regardless of your telephone equipment,
Notifies in real-time of incoming calls on your PC via a popup displaying the contact name from your Outlook database,
Renders possible direct dialing from Outlook,
Gives the possibility to choose between answering, messaging and transfer during an incoming call directly on the screen,
Updates in real-time your Outlook contacts,
Gives the possibility to manage the phone line of another person,
Interacts with the Outlook calendar according to its setting (free or busy).

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