Linksys RTP300 User Guide - Page 52

Configuring Dial Plans • Blocked number EXAMPLE: ( [1-8]xx | 9, xxxxxxx | 9, [2-9]xxxxxxxxx | 8, xxxxxxx | 9, 1 [2-9] xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 ) 9, 1 900 xxxxxxx ! This digit sequence is useful if you want to prevent users from dialing numbers that are associated with high tolls or inappropriate content, such as 1-900 numbers in the U.S.. After the user press 9, an external dial tone sounds. If the user enters an 11-digit number that starts with the digits 1900, the call is rejected. • U.S. international dialing EXAMPLE: ( [1-8]xx | 9, xxxxxxx | 9, [2-9]xxxxxxxxx | 8, xxxxxxx | 9, 1 [2-9] xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 ) 9, 011xxxxxx. After the user presses 9, an external dial tone sounds. The user can enter any number that starts with 011, as in an international call from the U.S. • Informational numbers EXAMPLE: ( [1-8]xx | 9, xxxxxxx | 9, [2-9]xxxxxxxxx | 8, xxxxxxx | 9, 1 [2-9] xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 ) 0 | [49]11 This example includes two digit sequences, separated by the pipe character. The first sequence allows a user to dial 0 for an operator. The second sequence allows the user to enter 411 for local information or 911 for emergency services. Acceptance and Transmission the Dialed Digits When a user dials a series of digits, each sequence in the dial plan is tested as a possible match. The matching sequences form a set of candidate digit sequences. As more digits are entered by the user, the set of candidates diminishes until only one or none are valid. When a terminating event occurs, the SPA9000 either accepts the user-dialed sequence and initiates a call, or else rejects the sequence as invalid. The user hears the reorder (fast busy) tone if the dialed sequence is invalid. The following explains how terminating events are processed. Terminating Event The dialed digits do not match any sequence in the dial plan. The dialed digits exactly match one sequence in the dial plan. Processing The number is rejected. • If the sequence is allowed by the dial plan, the number is accepted and is transmitted according to the dial plan. • If the sequence is blocked by the dial plan, the number is rejected. Linksys ATA Administration Guide 52