Custom Codec for TCP IP

I am using netty component to send message over TCP I/P to 3rd party server
and also hosting TCP IP serverfor message exchange initiated from 3rd party
system.

Sample Inbound (REQUEST) message:
<STX>00001|SYYYYMMDDNNNNN|EMPID|EMPNAME|DESIGNATION|DEPARTMENT<ETX>

Sample outbound (REPLY) message: <STX>00001|ACK<ETX>

- All messages are composed entirely of seven bit ASCII characters.
- Start of the message represented by <STX> (hex 02 control character)
- End of the message delimited by <ETX> (hex 03 control character)
- Each message should be acknowledged by ACK or NAK as shown in above reply
message format.
- All messages are composed entirely of seven bit ASCII characters.

I am new to Camel, will appreciate if someone helps me answering my
questions

1. Both MINA and NETTY componnets supports TCP IP communication, which one
should be used?
2. Whether these components supports <STX> <ETX> delimeter, if so how to
enable it?

Thanks,
Rav