Administering media encryption for H.323 signaling-groups

Last Updated : Dec 05, 2016 |

Before you begin

On the Customer Options screen, set the Media Encryption Over IP? field to n.

Procedure

  1. Type change signaling-group number.

    The system displays the Signaling Group screen.

  2. In the Media Encryption? field, type y.

    Media Encryption on trunk calls using this signaling group, is enabled.

    Note:

    If you leave this field with the default value n, the system overrides the encryption administration on the IP Media Parameters screen or any trunk call using this signaling group. The IP codec set used between two networks can be aes or aea. However, a call between two endpoints over an H.323 trunk using this IP codec set fails because there is no voice path.

  3. In the Passphrase field, type an 8-character to 30-character string.

    This string must meet the following conditions:

    • Must contain at least one alphabetic and one numeric symbol.

    • Can include letters, numerals, and exclamation point (!), ampersand (&), asterisk (*), question mark (?), semicolon (;), single quotation mark ('), caret (^), opening parenthisis((), and closing parenthesis ()), dot (.), colon (:), and hyphen (-).

    • Is case-sensitive.

    You must administer the same passphrase on both signaling group forms at each end of the IP trunk connection. For example, if you have two systems A and B with trunk A-B between them, administer both Signaling Group forms with the same passphrase for the A-to-B trunk connection.

    If you administered a passphrase, a single asterisk (*) is displayed in this field. If you did not administer a passphrase, the field is blank.

    The Passphrase field does not appear if either the:

    • Media Encryption Over IP? field on the Customer Options screen is n.

      or

    • Media Encryption? field on the Signaling Group screen is n.