Grandstream UCM6100 Security Manual - Manual (Page 13)

UCM6100 Security Manual Page 12 of 23
lower than the outbound rule will be rejected. Please configure the privilege for the outbound rule high
enough to restrict the extensions allowed to call external numbers via this trunk.
SOURCE CALLER ID FILTER
Instead of using privilege level, UCM6100 administrator could specify the extensions/extension groups that
are allowed to use the outbound rule. This can be done by selecting extension/extension groups or
defining pattern fo r the source caller ID in “Custom Dynamic Route” field. The extension allowed to make
outbound call will either need to be an extension in the selected list or match the defined pattern.
Figure 6: Source Caller ID Filter
Please specify the extension or the pattern here to the minimal set so that only the desired users can dial
out from this outbound route.
For detailed configuration instructions, please refer to MANAGING OUTBOUND ROUTE section in white
paper: How to manage inbound/outbound route on UCM6510/6100
IVR DIAL TRUNK
When creating/editing an IVR, the administrator could decide whether to allow the calls entering the IVR to
make outbound calls through trunks by configuring “Dial Trunk” and “Permission”. If “Dial Trunk” option is
enabled, the caller calling into the IVR will be able to dial external numbers through a trunk if the IVR’S
permission is higher than or equal to the privilege of the trunk. The potential risk here is that unwanted
users may call into IVR and then dial external number. This could possibly generate expected high charges
especially if an IVR is configured as the destination of an inbound route of a PSTN trunk, in which case,
anyone can call into the IVR and then dial out to long distance or international calls.