This object indicates the XPON service profile customer service encapsulation type.
Options:
1. ipv4-ipoe(1) - Indicates that the XPON service profile customer service encapsulation type is ipv4 ipoe
2. pppoe(2) - Indicates that the XPON service profile customer service encapsulation type is pppoe
3. ipv6-ipoe(4) - Indicates that the XPON service profile customer service encapsulation type is ipv6 ipoe
4. invalid(-1) - Indicates that the query fails or no information is detected
5. 0x600-0xffff - Indicates that the XPON service profile customer service encapsulation type is user-defined