The ACPN is configured in SDAT. This is the public number to be sent out to the public network.

When the call is originated on the private NQ network, the LDAT LCR-Attribute PUBNUM must be set on the gateway switch to the public network. If LDAT LCR-Attribute PUBNUM is set the calling number is only replaced with a provided PUBNUM if the NPI (Numbering Plan Identifier) matches that of the called number. The received ACPN will replace the the calling number when the LDAT Attribute is set and is not subject to any modification from the usual KN-AMOs i.e. KNFOR, KNMAT.

If the LCR-Attribute PUBNUM is not set, then the subscriber extension number (modified by KN-AMOs) is sent out.