You just need a PRI interface card and then configure it to provide the clock timing.
If this is the only PRI connection, the that's pretty simple. If you are also interfacing to a outside PRI, for example if the Asterisk box is going to sit in between the Telco and the Cisco, then you should configure it to get timing from the Telco PRI pass this through to the PRI connected to the Cisco. -- John Lange www.johnlange.ca
