Cisco 7800 Series Administration Manual page 64

Dial Plan
• Local dialing with an automatically inserted 3-digit area code:
( [1-8]xx | 9, xxxxxxx | 9, <:1>[2-9]xxxxxxxxx | 8, <:1212>xxxxxxx | 9, 1 [2-9]
xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 )
8, <:1212>xxxxxxx
calls go to one area code. After the user presses 8, an external dial tone sounds. The user can enter any
seven-digit number. The system automatically inserts the 1 prefix and the 212 area code before it transmits
the number to the carrier.
• U.S. long-distance dialing:
( [1-8]xx | 9, xxxxxxx | 9, <:1>[2-9]xxxxxxxxx | 8, <:1212>xxxxxxx | 9, 1 [2-9]
xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 )
9, 1 [2-9] xxxxxxxxx
11-digit number that starts with 1 and is followed by a digit 2 through 9.
• Blocked number:
( [1-8]xx | 9, xxxxxxx | 9, <:1>[2-9]xxxxxxxxx | 8, <:1212>xxxxxxx | 9, 1 [2-9]
xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 )
9, 1 900 xxxxxxx !
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:
( [1-8]xx | 9, xxxxxxx | 9, <:1>[2-9]xxxxxxxxx | 8, <:1212>xxxxxxx | 9, 1 [2-9]
xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 )
9, 011xxxxxx
that starts with 011, as in an international call from the U.S.
• Informational numbers:
( [1-8]xx | 9, xxxxxxx | 9, <:1>[2-9]xxxxxxxxx | 8, <:1212>xxxxxxx | 9, 1 [2-9]
xxxxxxxxx | 9, 1 900 xxxxxxx ! | 9, 011xxxxxx. | 0 | [49]11 )
0 | [49]11
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 of 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 the user enters more digits, the set of candidates
diminishes until only one or none is valid. When a terminating event occurs, the IP PBX 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 table explains how terminating events are processed.
Terminating Event
Dialed digits have not matched any sequence in the
dial plan.
Cisco IP Phone 7800 Series for Third-Party Call Control Administration Guide
50
This example is useful where a local area code is required by the carrier but most
After the user presses 9, an external dial tone sounds. The user can enter any
This digit sequence is useful if you want to prevent users from dialing numbers
After the user presses 9, an external dial tone sounds. The user can enter any number
This example includes two-digit sequences, separated by the pipe character. The first
Processing
The number is rejected.