Country-specific sub-fields are described in this section.
- The country variants are not present in the Ingress Protocol Variant Specific Data field.
- The country variants are only available in the Egress Protocol Variant Specific Data when making SBC to GSX ISUP calls and the accounting configuration is setup to pass the egress protocol variant string back to the ingress GW.
- The Japan ISUP variant can be present in the Ingress or Egress ISUP MIME Protocol Variant Specific Data fields when using SIP-I signaling with the MIME variant set to Japan or when using the X-Header feature.