Quectel EG91 AT Commands for TCP/IP Connection

Command Name

AT Command

IDG Command

Response (ASCII)

Comment

Query and Report Signal Strength

AT+QCSQ

D303

RX:ViVOtech2
+QCSQ: "LTE",59,-92,93,-12
OK

<BG95&BG77&BG600L Series
AT Commands Manual>

Ping a remote server

AT+QPING

D304 7777772E62616964752E 636F6D

RX:ViVOtech2
+QPING: 0,"36.152.44.95",32,39,255
+QPING: 0,1,1,0,39,39,39

ping www.baidu.com

GET_SIMCARD_STATUS

AT+CPIN?

90332701 41 54 2b  43 50 49 4e 3f  0D 0A

RX:ViVOtech2+CPIN: READY

TCP CONNECT STEP 1

GET_CS_NET_REG_STATUS

AT+CREG?

90332701 41 54 2b 43 52 45 47 3f  0D 0A

RX:ViVOtech2++CREG: 0,1
OK

TCP CONNECT STEP 2

GET_PS_NET_REG_STATUS

AT+CGREG?

90332701 41 54 2b 43 47 52 45 47 3f 0D 0A

RX:ViVOtech2+CGREG: 0, 1
OK

TCP CONNECT STEP 3

SET_PARAS_OF_TCPIP_CONTEXT

AT+QICSGP=?

90332701 41 54 2b 51 49 43 53 47 50 3f  0D 0A

TCP CONNECT STEP 4

SET_ACTIVATE_PDP_CONTEXT

AT+QIACT=1

90332701 41 54 2b  51 49 41 43 54 3d 31  0D 0A

RX:56 69 56 4F 74 65 63 68 32 00 90 00 00 06 00 00 4F 4B 0D 0A 54 DE

TCP CONNECT STEP 5
1 is context id (range 1-16)

GET_ACTIVATE_PDP_CONTEXT

AT+QIACT?

90332701 41 54 2b  51 49 41 43 54 3f  0D 0A

RX:ViVOtech'2+QIACT: 1,1,1,"10.140.60.113"
OK

TCP CONNECT STEP 6

TCP_CONNECTION

AT+QIOPEN=1,0,"TCP","96.44.152.36",433,0,0

90332701 41 54 2b 51 49 4f 50 45 4e 3d 31 2c 30 2c 22 54 43 50 22 2c 22 39 36 2e 34 34 2e 31 35 32 2e 33 36 22 2c 34 33 33 2c 30 2c 30  0D 0A

RX:ViVOtech2 OK (RX:56 69 56 4F 74 65 63 68 32 00 90 00 00 06 00 00 4F 4B 0D 0A 54 DE)

TCP CONNECT STEP 7 (96.44.152.36,433 is IP address and port of baidu)

LTE_TCP_RECV

AT+QIRD=1,1000

90332701 41 54 2b 51 49 52 44 3d 31 2c 31 30 30 30  0D 0A

1000 is timeout