This object indicates the s-vlan priority policy distributed configured on GPON ONT.
Options:
1. specify(1) - Indicates that the s-vlan priority policy is specified
2. user-cos(2) - Indicates that the s-vlan priority policy is user-cos
3. dscp-mapping(3) - Indicates that the s-vlan priority policy is dscp-mapping
4. invalid(-1) - Indicates that the query fails or no information is detected