When a system or user short code is configured to bar outgoing calls, you can override call barring. Typically, this configuration is used for a phone in a shared or public area. By default, the phone has outgoing calls barred. The administrator can override call barring for specific dialed numbers by entering numbers with a record in the external directory. When the dialed number exists in the external directory and the Directory Overrides Call Barring setting is enabled, call barring is overridden.

The System Directory entries must use the format (shortcode)number. For example, if the number to dial is 61234, where 6 is the shortcode used to dial externally and 1234 is the number,  the System Directory entry must be (6)1234. If the dial shortcode contains a name string rather than digits, then Directory Overrides Call Barring will not work.

The Directory Overrides Barring setting is located on the System | Telephony | Telephony tab.

For information on the directory, see the description for the System | Directory Services tab.

Server Edition configuration

For Server Edition deployments, the Directory Overrides Barring must be enabled on each node. It is not a system wide setting.

For example, if the Primary Server uses an IP500 V2 expansion system as an ISDN gateway, Directory Overrides Barring must be enabled on the Primary Sever for Primary Server users dialing on external ISDN lines. For the IP500 V2 expansion users, Directory Overrides Barring must be enabled on the IP500 V2 expansion system.

It is recommend that the short code configured to dial externally on ISDN lines be the same on all nodes. For example, if Primary Server users and IP500 V2 expansion users want to reach PSTN number 123456789 on ISDN lines, configure the dial codes as follows.

• Primary Server: 6N/Dial/6N/XX (XX is the line group ID for the SCN line)

• IP500 V2 expansion: 6N/Dial/N/YY (YY is the line group ID for ISDN line)

• Directory Entry number defined on Primary Server: (6)123456789