Does the LTE cellular interface support PPP

The LTE cellular interface supports PPP. The following physical interfaces also support PPP:
- Synchronous or asynchronous serial interface working in synchronous mode (the interface type is the serial interface)
- Async interface working in protocol mode
- Serial interfaces formed by CE1/PRI or CT1/PRI interfaces, which have the same logical features as synchronous serial interfaces
- Serial interfaces formed by CE3 or CT3 interfaces, which have the same logical features as synchronous serial interfaces
- Serial interfaces formed by E1-F or T1-F interfaces, which have the same logical features as synchronous serial interfaces
- Serial interfaces formed by E1/T1 channels that are channelized from a CPOS interface, which have the same logical features as synchronous serial interfaces
- Cellular interfaces
- ISDN BRI interfaces
- POS interfaces

Note:
For LTE cellular interfaces, only the E392 data cards support the link-protocol ppp command.

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