Cannot connect to MQTT server BC 35G modem

IoT Modules LPWA Module
1

I’m using BC95 without any problem. I got a pair o BC35G and I set it as i did with BC95 but i cannot connect to MQTT server

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Do you know if there are any differences between both modems than i should take into account? I did many tests but i cannot fix issue

thanks

2

AT+QMTCONN must be executed within 10 seconds after AT+QMTOPEN,please try it again!

3

Thanks herbert.pan-q.

I’have just done what you said. Response lasts 10 secs and is a time out

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image827×409 27.8 KB

My broker doesn’t care about pass and user

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and client ID is unique

4

AT+CGPADDR //query IP from the radio network

5

Thanks herbert.pan-q.

Yes, I get an IP

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6

Is this an IPv6 address type? Can you switch to IPv4 for debugging, or a SIM card that supports IPv4?

7

Thanks herbert.pan

This is a ipv4. And I test a card that is working with BC95 modem

8

I think i need to increase time t1

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I setted AT+QMTCFG=“timeout”,0,60,3,0

but it didn’t work

9

I recommend that you open your MQTT server IP and port, I need to debug validation locally

10

Solved,

I updated firmware and it worked

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11

OK,YOU ARE GREAT,If there are any questions, we can continue our discussion

12

Where will i can to find like information? in which manual is this displayed?

13

tell me pleas, after AT+QMTCONN. missing response same +QMTCONN, 0,0,0. but there is not nothing…

14

hi,AlexIdushy
Do you have a problem?

15

Yes. I told about at this post.

16

Hi. I have new info about my problem. cipher suit on server is

(i got via cmd - openssl ciphers -s -tls1_2)

ECDHE-ECDSA-AES256-GCM-SHA384:
ECDHE-RSA-AES256-GCM-SHA384:
DHE-RSA-AES256-GCM-SHA384:
ECDHE-ECDSA-CHACHA20-POLY1305:
ECDHE-RSA-CHACHA20-POLY1305:
DHE-RSA-CHACHA20-POLY1305:
ECDHE-ECDSA-AES128-GCM-SHA256:
ECDHE-RSA-AES128-GCM-SHA256:
DHE-RSA-AES128-GCM-SHA256:
ECDHE-ECDSA-AES256-SHA384:
ECDHE-RSA-AES256-SHA384:
DHE-RSA-AES256-SHA256:
ECDHE-ECDSA-AES128-SHA256:
ECDHE-RSA-AES128-SHA256:
DHE-RSA-AES128-SHA256:
ECDHE-ECDSA-AES256-SHA:
ECDHE-RSA-AES256-SHA:
DHE-RSA-AES256-SHA:
ECDHE-ECDSA-AES128-SHA:
ECDHE-RSA-AES128-SHA:
DHE-RSA-AES128-SHA:
AES256-GCM-SHA384:
AES128-GCM-SHA256:
AES256-SHA256:
AES128-SHA256:
AES256-SHA:
AES128-SHA

my modem has ciphers
0X0035 TLS_RSA_WITH_AES_256_CBC_SHA
0X002F TLS_RSA_WITH_AES_128_CBC_SHA
0X0005 TLS_RSA_WITH_RC4_128_SHA
0X0004 TLS_RSA_WITH_RC4_128_MD5
0X000A TLS_RSA_WITH_3DES_EDE_CBC_SHA
0X003D TLS_RSA_WITH_AES_256_CBC_SHA256

support service told that there are old ciphers at modem. is it true or not?

17

You can choose our product BC660K,it can support SSL+MQTT

18

thank you. i read manual for BC660K but don’t find new features for ssl. does BC660K have other chippers different 35 2F 05 04 0A 3D?

19

Quectel_BC660K-GL_SSL_Application_Note_V1.0.pdf (224.5 KB)

20

Can you recomend me mqtt modem with large list SSL Cipher Suites?