Not sure why there is a MAC payload included - what is make & model of the gateway?
dragino lps8-868
@descartes Sir, could you please suggest me the AT commands for communication via serial terminal for OTAA method ??
hello,
i performed:
OTAA-Setup
AT+CDEVEUI=xxxxxxxxxxxxxxxx
AT+CAPPEUI=xxxxxxxxxxxxxxxx
AT+CAPPKEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
AT+CTXP=2
AT+CSAVE
AT+IREBOOT=0
@daa792 Thank You so much for the suggestion.
However, after providing the commands as stated, and using command AT+DTRX=1,2,5,0001020304
serial terminal shows “ERR+SEND:00”. Could you advice me where I am going wrong ??
I used AT+CJOINMODE=0 for OTAA method
So @AbhipsitaTechnologie you choose OTAA mode.
What is your full AT+JOIN command , and what answer do you get ?
Something like that ?
AT+CJOIN=1,1,10,8
OK
+CJOIN:OK
and what is the answer for AT+CJOIN=1,1,10,8
(full CJOIN command with parameters)
OK or not ?
if not OK you can’t send succesfully datas
@al1fch on applying “AT+CJOIN?”,
I obtained “+CJOIN=1,1,10,8” followed by “OK”,
however on applying AT+DTRX=1,2,4,00010203, it shows “ERR+SEND:00”
@al1fch OTAA method is not working out, however on using ABP method, and applying the command AT+DTRX=0,1,4,01020304, it shows “OK+SEND:04” followed by “OK+SENT:01”. However, on view the TTN gateway live data, I got the result as attached on the screen shots. I could not decipher the frmpayload which i think is bound to be the actual data(sent from e-87 endnode). please do refer to the refer screenshots for a clearer understanding.
'look at and show payload ’ is not a gateway job . 
.
(the postman does not open and read the letters !!)
Go to console / Application/End-device screen to see , for your end-device it’s own live datas with the raw and clear payload (the second according to your specific payload formatter )
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@al1fch Sir, thank You so much for the reply. I opened the application/end device/live data screen, but nothing is updated on screen, expect for the message “creation of node…updated location settings”. It is only at the gateway live data screen, where i generally obtain the msg
"receive gateway status Metrics:{ackr:0,rxfw:1,rxok:1… "
and after applying command AT+DTRX=0,1,1,00 from serial terminal, it shows
" receive uplink message DevAddr:260B5D94 FCnt:4, FPort:10, Datarate:SF9BW125 SNR:7.8 RSSI:-59 " at the gateway live data window.
I used the following set of commands as follows:
AT+CJOINMODE=1
AT+CDEVADDR=2******0
AT+CAPPSKEY=4------------------------------8
AT+CNWKSKEY=8-----------------------------7
AT+CULDLMODE=2
AT+CCLASS=0
AT+CCONFIRM=0
AT+CNBTRIALS=0,1
AT+CSAVE
AT+IREBOOT=0
AT+DTRX=0,1,1,00
AT+CSTATUS?
+CSTATUS:07
OK
I dont know why I am not getting any updated msg at the application/end device/live data screen.
Please do suggest me, where I might be wrong. Thanks in advance.
@al1fch the issue was due to wrong frequency selection. finally the end node shows data at the live data session of applications.
Good news !! 
@AbhipsitaTechnologie Please can you tell me what setting did you change regarding frequency?
I have similar problem with E78-868LN22s module and E890 gateway. I was unable to perform join process. Always return +CJOIN: FAIL
Thanks in advance
Im still not able to join by OTAA. I created different end device by ABP activation and when I send data by at+dtrx=0,0,5,0102030405 i receive response: OK+SEND 05 and OK+SENT 01
Status is +CSTATUS: 07 and nothing is received by ttn network server, dont see any payload.
When I send at+dtrx=1,1,5,0102030405 I get negative response ERR+SENT:01 and string “rejion” i suppose that should be “rejoin” instead. This is typing error in firmware stack.
What should I do?
Thanks in advance to all.