[Asterisk-Users] Low cost hardware time for production environment

[Maron Kristófersson]

Hello List.

I am setting up asterisk as a central dialplan, voicemail and conference 
solution, connected to 12 Cisco 1760 Routers running Call Manager 
Express IOS distributed around the world.  This is all done over VPN. 
These routers all have PSTN access in their respective country.

So far all is good, and Asterisks interopability with the Cisco CME 
using SIP is very good, although authentication is not possible.

I however need a hardware timer for the Asterisk box.  I've tried 
ztdummy but it won't maintain a conference in sync for more than 1-2 
minutes.  However I don't need any PSTN connectivity as the Cisco 
Routers server as a gateway for that purpose.

Does anyone have an idea of which product from digium would be suitable 
as a hardware timer for our setup.  We need to be able to have 
conferences with up to 20-30 people, and listen in conferences with 2 or 
3 speakers that support up to 200 listeners.

Best regards,

Maron Kristofersson