Alias manipulation is performed immediately when a message such as an ARQ, LRQ, or a Setup is received. Any matching pattern is replaced with the specified string, allowing you to replace characters or strings that are hard or impossible to dial on certain endpoints. Normal call lookup is performed following alias manipulation.

  1. Choose VoIP > H.323.

  2. Click Alias Manipulation in the H.323 Settings navigation panel at the top of the page to open the H.323 Alias Manipulation page.

  3. Configure settings using the information in the following table as a guide.

    Note

    Rules are executed in the order in which they are listed. Use the arrows to move entries up and down, or use the Index field to specify where a new or edited rule falls in the list.


    H.323 Alias Manipulation Page

    ItemDescription

    Destination H323-ID or E.164 Alias Modification

    Shows all alias manipulation rules configured on the system. All rules are applied to each alias being processed. The rules are applied in the order they are listed. Each rule consists of a pattern to match and a string to replace the matching pattern with.

    Add a Rule

    Allows you to add new prefixes to the Prefix Routing and Gatekeeping Neighboring table. Refer to Configuring Peering-Proxy Mode Settings.

    Action

    Specifies whether the rule is to be added or edited:

    • Add new rule

    • Edit 1: “#”

    • Edit 2: “\*”

    • Edit 3: “^@”

    • Edit 4: “^h323:@”

    PatternEnter the pattern to be matched. Refer to Regular Expressions and Expression Examples for a list of valid patterns.
    Index

    Determines the order in which the rule is scanned in the Destination H323-ID or E.164 Alias Modification table. To add a rule between two rules with consecutive indexes (n and m), use the higher index (m).

    ReplaceEnter the string that replaces the matched pattern. Refer to Regular Expressions and Expression Examples for a list of valid patterns.

  4. Manage rules in the Destination H323-ID or E.164 Alias Modification table:

    1. Select checkboxes for the entries that you want to move up or down in the list or delete. Click All to choose all the entries or None to clear your selections.

    2. Click the up or down arrows to move entries in the list.

    3. Click Delete to remove an entry or click OK to confirm.

  5. To add a new rule:

    1. Choose Add new rule from the Action drop-down list.

    2. In the Pattern field, add a regular expression for matching against the destination alias. Refer to Regular Expressions and Expression Examples for a list of valid patterns.

    3. In the Index field, add a position that the rule occupies in the Destination H323-ID or E.164 Alias Modification list.

    4. In the Replace field, enter a string to replace the matching pattern. Refer to Regular Expressions and Expression Examples for a list of valid patterns.

    5. Click Add to save your changes.

  6. To edit a rule:

    1. Choose an edit action from the Action drop-down list.

    2. In the Pattern field, edit the regular expression for matching against the destination alias.

    3. In the Index field, edit the position that the rule occupies in the Destination H323-ID or E.164 Alias Modification list.

    4. In the Replace field, enter a string to replace the matching pattern. Refer to Regular Expressions and Expression Examples for a list of valid patterns.

    5. Click Edit to save your changes.

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