cisco 877 & voip servers

[binary_dreamer]

Hi.

in my office i do have a cisco 877 to get access to the internet where i do have a static  IP address. The LAN has IP 192.168.0.0/24 with 192.168.0.1 to be the router.

in my LAN i do have a voip server which is on 192.168.0.50

all of the PCs have access to the voip server with softphones.

i would like to filter access of the voip server only for local access, in order to avoid high charges.

any ideas on what config fo i have to setup?

[brquinn]

I'm not sure if this is what you're looking for, but I did find the following.

Toll Fraud posts on our support forums:
https://supportforums.cisco.com/message/3211319#3211319
https://supportforums.cisco.com/message/3163228#3163228

Understanding Toll Fraud Enhancements in 15.1(2)T
https://supportforums.cisco.com/docs/DOC-12228

I hope this helps.

Thanks,

Brendan