Hi,
we have the HL7800 loaded with firmware 2.4.0 and the latest AT guide 6.1 does not mention any FTP commands like the ones in other HL modems, HL76xx, HL85xx.
Are you going to release a version with ftp commands ?
If not is their any guideline how to implement ftp with this modem ?
Also has anybody managed to sent SMS over Nbiot anywhere in Europe using this modem ?
Thanks.
There will be FTP commands late this year but LPWA is intended for low data rates so FTP is not really a sensible protocol
Re SMS over NB1, it does not exist on NB1, it might on cat M1 (as this is a more natural progression of TE utilising all of the standard network elements). You are probably talking about NIDD (Non IP Data Delivery), it is a bit hit and miss across networks, this is accessible via an API on the network side but you need to talk to them to see what they offer.
Regards
Matt
Hello Matt,
thanks for the reply much appreciated.
On CatM1 it is confirmed that SMS is available by Orbcomm in USA for Verizon and they say the same for AT&T we will be 100% sure next week when we test it with both providers. In Europe Vodafone advertises SMS on the NB1 network but they donât work in various countries, so this is why I am asking. The response from the modem is error 311 - service not available by provider. SMS has a number of advantages that make it the N1 approach for some applications, especially alarming related. Our core business is ultra low power battery powered devices and in this field SMS is by far the most reliable means of communication.
FTP is an application protocol which simplifies many things especially security related and when you want to sent 100-200 Kbytes of data once per day it is a very reasonable way to do it.
The transfer rates of LTECatM1 is 375kb/s-1Mbs and NB1 is 50kbps its more than enough for 20-30 lines of measurements.
The reason we approach these technologies is the lifecycle compared to 2G, 3G, 4G and 5G. The providers claim this layer will not be phased out. So in this respect we expect the minimum from them which is SMS and a few kilobytes of data per day at least. If we wanted a few bytes per message there are other narrow band technologies which we also have products using them.
When is the FTP expected ?
Is there a Beta we can try ?
We have version 2.4 right now which has âfeaturesâ. It takes about 40-50 seconds to register to the Vodafone NB1 network.
Also I donât know if you can comment we discovered a peculiar behavior in some HL7800 modems. We have some that cannot be upgraded more than version 2.1. We tried to take them to 2.4 and they do not respond to AT commands anymore.
They can be downgraded and then they work.
Thanks.
Regards,
George
Good feedback thanks.
We see this requirement quite a bit in a lot of customer but that does not necessarily translate across to implementation by the operators even if it is supported by the UEâs. It is a sticky one.
With regards âFTPâ, since you have referred to security I presume you are looking for âFTPSâ involving exchange of TLS certificates? As to when FTP will be available, it will be sometime in Q3. 2.4 is the current beta so no, there wonât be a beta for you to play with until then (maybe a month or so before but not much before.
Regards
Matt
Hi Matt,
thanks for the answer.
Lets have FTP and then SFTP too if possible. Yes security is a major issue with IoT in general. If we already have things working with sftp why reinvent the wheel.
Q3 is far away please push them for earlier.
Thanks.
Regards,
George
I cannot âpushâ this, the development team has a lot on it plate at the moment. If you need it sooner then you need to feedback into your commercial channel to push for it and give Sierra the commercial impetus to prioritise the feature over others (as we have a lot of requests from a lot of customers).
Regards
Matt
Hello,
we have some problems with the HL7802. We use the following sequence and we get errors.
Firmware HL7802.4.3.7.0
The same happens on an HL7800 with the latest firmware.
Network is Vodafone, connection is good.
Ideas ?
AT+KPATTERN=â9â
OK
AT+CGDCONT=1,âIPâ,âep.inetd.gdspâ
OK
AT+KCNXCFG=1,âGPRSâ,âep.inetd.gdspâ,"",""
OK
AT+KFTPCFG=1,â5.172.194.30â,âftpâ,âpasswordâ,21,1
+KFTPCFG: 1
OK
+KCNX_IND: 1,1,0
+CEER: âNAS-EMMâ,âSERREQâ,âREJECTâ,#10,IMPLICITLY_DETACHED
+KCNX_IND: 1,5,30
+KFTP_ERROR: 1,3
+KCNX_IND: 1,0,0
Thanks.
So are you running the unit on 2G or NB1? What country? Also recommend using the latest 4.3.9.
The reject is coming from low level layer 3 signalling from the network so not a lot we can do about it.
Regards
Matt
Above was actually me, my login messed up.
Hello Matt,
thanks.
It is Vodafone network NB1, region Greece but the apn is the same for all Europe. CREG is 0,5.
AT+KCARRIERCFG=0. On the Sierra site it says the HL7802 is Vodafone compatible and there is no special carrier setting for Vodafone.
The behavior is weird.
We managed to accomplish ftp changing the procedure as below ,
AT&K3
OK
AT+KSLEEP=2
OK
AT+CMEE=1
OK
AT+CGDCONT=1,âIPâ,âep.inetd.gdspâ
OK
AT+KPATTERN=â9â
OK
AT+KCNXCFG=1,âGPRSâ,âep.inetd.gdspâ
OK
AT+KCNXPROFILE=1
OK
AT+CGATT=1
OK
AT+KFTPCFG=1,â5.172.194.30â,âftpâ,âpasswordâ,21,1,0,0
+KFTPCFG: 1
OK
AT+KCNXUP=1
OK
+KCNX_IND: 1,1,0
AT+KFTPCNX=1
OK
+KFTP_IND: 1,1
AT+KFTPSND=1,"","",âADU6.TXTâ,0,0
CONNECT
hello9
OK
+KFTP_IND: 1,2,12
AT+KFTPCLOSE=1
OK
the main difference is we first connect to the GPRS and then initiate the FTP send.
But i pretty sure on a previous firmware the FTP send alone was enough.
Ideas ?
Still sometimes after the KFTPCNX command on the above sequence we get
AT+KFTPCNX=1
+CME ERROR: 921
+KFTP_ERROR: 1,3
+KCNX_IND: 1,0,0
and if we give afterwards,
AT+KFTPSND=1,"","",âADUA6.TXTâ,0,0
CONNECT
Test4 02042020 9
OK
it works.
How can we be sure this thing works if we get an error and the next moment the error is not there anymore ?
Is it the network or the modem ? The network is Vodafone the development network.
Thanks.
+KCNX_IND: 1,1,0