Trunk Security; Outbound Rule Permissions; Privilege Level; Figure 5: Outbound Rule Permissions - Grandstream Networks UCM6100 Manual Manual

TRUNK SECURITY

A potential risk for trunks is that unwanted users may gain the authority to make international or long
distance calls. This will result in unexpected high charges before the UCM6100 administrator notices this.
Usually this high cost is due to improper configurations on the UCM6100. Therefore administrators must
be extremely cautious when configuring those trunks that will be charged by placing certain calls, for
example, PSTN trunks or SIP trunks with international call capability.

OUTBOUND RULE PERMISSIONS

Two methods are supported on UCM6100 to control outbound rule permissions and users can apply one of
them to the outbound rule.

1. Privilege Level

2. Enable Filter on Source Caller ID
Please make sure to configure it to allow only the desired group of users to call from this route.

Figure 5: Outbound Rule Permissions

PRIVILEGE LEVEL
On the UCM6100, the supported 4 privilege levels are "Internal", "Local", "National" and "International"
from the lowest to the highest. Outbound calls through trunk can be placed only if the privilege of the caller
is higher or equal to the privilege of the outbound rule. Outbound call requests from users with privilege
UCM6100 Security Manual Page 11 of 23