[?]: IEC62056-21 to Modbus or DNP

[mytom123]

Hello, I need some help. The matter is this:

We are making a substation automation,all the feeders have ZMD405 meters from landisgyr
These meters are DLMS and IEC 62056-21 protocol, but our RTU uses MODBUS or DNP protocol.
And we already have these devices, we would like to acquire a IEC 62056-21 to MODBUS/DNP converter,
Has somebody had solution for the protocol conversion IEC 62056-21 / Modbus RTU ?

Brgds.