Outbound routes, associated with a specific Telephone Service Provider, are specified as a list of potential dialed patterns. The patterns may be specific, such as '911', or more general, such as 'any 7 digits'. An outbound route provides the mechanism for a particular dialed sequence to be allowed. These routes direct calls fitting a defined pattern to be routed using PSTN lines, or via Internet connection from the associated telephone service provider. By specifying outbound routes per provider, the administrator can direct calls to the best provider for that call type. For example, '411' calls can be directed to the best information resource of the telephone service providers.
To enable a particular dialed pattern to connect out, that pattern must be specified for at least one provider. For example, to enable '911' dialing, the '911' dialed pattern must be set as an outbound route for at least one provider. If no outbound route exists for the sequence, it will be denied connection access.