Supported Dial Plans

Polycom phones support Skype for Business External Access Prefix functionality.

Examples of supported dial plans include the following:
  • Support for multiple combination of braces (): ^91(727|813)([2-9]\d{6})$@+9$1$2@0
  • Support for 'ext': ^64(\d{2})$@+86411845933$1;ext=64$1@0
    Table 1. Supported Dial Plans

    Number

    Element

    Meaning

    Example

    Description of Example

    1

    ^

    Match at beginning of string

    ^123

    Match the digits 123 at the beginning of the string

    2

    ()

    Captures the matched subexpression

    (456)

    Capture what is between the parentheses into a numbered variable, starting at 1 which can be accessed as $n, for example, $1

    3

    Specifies zero or more matches

    \d( * )

    4

    +

    Specifies one or more matches

    \d( + )

    5

    ?

    Specifies zero or one matches

    \d( + )

    6

    {n}

    Specifies exactly n matches

    \d {4}

    Match 4 digits

    7

    Vertical Bar (Pipe)

    Matches any one of the terms separated by the (vertical bar) character when all characters are surrounded by brackets or square brackets

    (1|2|3) or

    [1|2|3]

    Match either 1, 2, or 3.

    8

    \d

    Matches any decimal digit

    ^\d

    Match any decimal digit (at the beginning of a string)

    9

    $

    The match must occur at the end of the string

    ^(123)$

    Match exactly digits 123 (and not 1234)