Administering enhanced local dialing

Last Updated : Apr 17, 2026 |
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Phones automatically prepend a number from the incoming call log or from web pages with a digit to dial an outside number. This feature is called enhanced local dialing (ELD). For example, if you get a call from an international number and want to call back, the phone determines the number to be called and prepends the number to get an outside line. The phone then dials the number.
The following configuration parameters are applicable to this feature:
Parameter name
Default value
Description
ELD_SYSNUM
1
Specifies whether enhanced local dialing algorithm will be applied for system numbers.
Value operation:
ENHDIALSTAT
1
Specifies if the algorithm defined by the parameter is used during certain dialing behaviors.
Value operation:
PHNCC
1
Specifies the international country code of the Communication Manager call server. For example, 1 for the United States, 44 for the United Kingdom, and so on.
Valid values are from 1 to 999.
PHNDPLENGTH
5
Specifies the internal dial plan number length. For example, if the extension number is 12345, then the dial plan length is 5.
This value must match the extension length set on your call server.
Valid values are from 3 to 13.
PHNIC
011
Specifies the international access code.
Valid values are from 0 to 4 characters such as numbers 0–9, and special symbols such as star key (*), and pound key (#).
PHNLD
1
Specifies long distance access code.
Valid values are from 0 through 9 and empty string.
PHNLDLENGTH
10
Specifies the maximum length, in digits, of the national telephone number for the country in which the Communication Manager call server is located.
For example, 800-555-1111 has a length of 10.
Valid values are from 5 to 15.
PHNOL
9
Specifies the outside line access code.
Valid values are from 0 to 2 characters such as numbers 0–9, and special symbols such as star key (*), and pound key (#).
Note:
  • The parameter values must be relevant to the location of the Avaya Media Server where the IP phones are registered. For example, if a phone is in Japan and its media server is in the United States, set the PHNCC value to 1 for the United States.
  • The digits the phones insert and dial are subject to standard Avaya Media Server features and administration. This includes Class of Service (COS), Class of Restriction (COR), Automatic Route Selection (ARS), and so on.
  • Phones will not insert the expected digits when calling back from call history or contacts list if the configured SIP user extension is equal to or longer than the number stored in the call history.
  • Phones will not insert the expected digits for contacts that are saved of an inbound call from the call history.

Enhanced Local Dialing scenarios

The PHNOL parameter is applied without modification in the following scenario:
  • ELD is applied to incoming history by setting the ENHDIALSTAT parameter to 1 or 2. A user calls a number from the incoming or missed call history. The number of digits in the number:
    1. Is greater than the national number length (PHNLDLENGTH).
    2. Is greater than the internal number length (PHNDPLENGTH) but lesser than the national number length (PHNLDLENGTH). (PHNDPLENGTH < length of the number < PHNLDLENGTH)
The PHNOL parameter is added to the called number in the following scenario:
  • ELD is applied to Contacts by setting the ENHDIALSTAT parameter to 2. A user calls a number from Contacts. The number of digits in the number:
    1. Is greater than the national number length (PHNLDLENGTH), and PHNOL is not equal to the first digit of the number.
    2. Is greater than the internal number length (PHNDPLENGTH), and the length of this number is lesser than the national number length (PHNLDLENGTH). (PHNDPLENGTH < length of the number < PHNLDLENGTH)
PHNOL and PHNLD are applied to the number in the following scenario:
  • A user calls a number from the incoming or missed call history (ENHDIALSTAT >= 1) or Contacts (ENHDIALSTAT = 2), and the length of this number is equal to the national number length (PHNLDLENGTH).
    Note:
    When the first digit of the called number matches PHNLD, only PHNOL is applied.
Related information
Configuring the phone using Administration menu