Network not getting registered

IoT Modules MC/EM Series
1

Hi Team,

I am using EM7565 module in my design and i am trying to ping to Google. I am not able to do it and when i run the !GSTATUS command i am getting below response.
AT!GSTATUS?

!GSTATUS:
Current Time: 295 Temperature: 31
Reset Counter: 1 Mode: ONLINE
System mode: LTE PS state: Attached
LTE band: B3 LTE bw: 15 MHz
LTE Rx chan: 1299 LTE Tx chan: 19299
LTE SSC1 state:NOT ASSIGNED
LTE SSC2 state:NOT ASSIGNED
LTE SSC3 state:NOT ASSIGNED
LTE SSC4 state:NOT ASSIGNED
EMM state: Registered Normal Service
RRC state: RRC Idle
IMS reg state: No Srv
PCC RxM RSSI: -60 PCC RxM RSRP: -90
PCC RxD RSSI: -96 PCC RxD RSRP: -132
Tx Power: – TAC: 046f (1135)
RSRQ (dB): -11.7 Cell ID: 0001390a (80138)
SINR (dB): 5.8
OK
AT!G:Sde…

Also I need to understand do we need to connect any antenna for Main Tx/RX connector on the module? Or with out the antenna will we able to connect to the network??
The above print we got onlly after we connect an external antenna on the Main tx/Rx connector pin on the module.

Please suggest as we are stuck in this and cannot proceed further.
Thanks in advance.

Regards,
Karthik

2

from AT!GSTATUS, it is registered to network already.
Are you doing the ping test in Windows or Linux?

3

Hi jyijyi,
We are pinging using linux
Do we need to connect antenna on the main Tx/Rx connector? or the module has its own antenna? can you confirm this please?

Regards,
Karthik

4

you need to connect antenna

you might also take a look at this document for establishing data connection in linux:

5

Ok jyijyi ,
Thanks for the update. I will check and get update to on the progress.

6

Hi jyijyi,

We have an LED connected to the WWAN_LED# pin on our custom board and it blinking, can you explain me what is the meaning of this as there is no data available in the technical specification.
Also we tried to probe the SIM clock . and it stays high may i know when the sim clock will toggle?

Regards,
Karthik

7

The sim clock toogles when module needs to read it such as power up

The LED will blink with different pattern:
Low Power Mode Pattern 4
Offline Pattern 0
No Service Pattern 2
In Service Pattern 1
Roaming Pattern 5
Data Active Pattern 3

Pattern description:
Pattern 0 Dark
Pattern 1 Solid
Pattern 2 200ms ON, 5s OFF
Pattern 3 400ms ON, 100ms OFF
Pattern 4 1s ON, 1s OFF
Pattern 5 5s ON, 200ms OFF

8

Hi jyijyi,

We are able to ping to www.google.com successfully.
We had to Name Server in our : /etc/resolv.conf file.
Edit your /etc/resolv.conf and add a working Name Server.
Google provides a free one, 8.8.8.8

After that we where able to ping to Google using : ping -I <interface_name> www.google.com

Regards,
Karthik