
Applicable Products Part number Description
ZETA-GEP-LTE4 (EU) Low Power LTE Cat 4 European Modem with GPIO and GNSS
ZETA-G-GPRS Entry Level GPRS Modem with GNSS (GL)
ZETA-N2-GPRS Entry Level GPRS Modem (GL)
ZETA-NEP-LTE4 (EU) Low Power LTE Cat 4 European Modem with GPIO
ZETA-NEP-LTEM (GL) Low Power Global LTE Cat M Modem with GPIO
ZETA-NLP-LTE1 (EU) Ultra Low Power European LTE Cat 1 Modem
ZETA-NLP-LTEM (GL) Ultra Low Power Global LTE Cat M Modem
ZETA-N-LTE (EU) High Performance LTE Cat 4 Modem with GPIO
ZETA-NSP-LTE1 (EU) Low Power European LTE Cat 1 Modem
Objective All industrial modems requires initial set up, so that they can communicate with other modems on the cellular networks using AT commands. This application note shows how this is done for Siretta ZETA modems and ensure that the modem is correctly configured to communicate over cellular network.
Demonstration of Solution Resources:
PC with an installed Terminal Emulator' program: A Windows 10 laptop installed with Tera Term was used for the purpose of this guide.
Siretta Part Number: 61057 -ZETA-GEP-LTE4 (EU) Starter Kit (any ZETA starter Kit is suitable for this application)
Insert SIM card to the modem
Power on the modem
Connect the supplied serial port cable to the PC
Connect the antenna
As described in the Starter Kit Quick Start Guide
Open Hyperterminal on the PC (or your preferred terminal emulator: PuTTY, TeraTerm).
Select new connection. Name the new connection for reference in the future.
Name your port.
8. Choose the correct COM port. From the drop-down list, select the correct COM port your modem is connected to.
9. Configure the port with the following settings (These settings are standard for all of the ZETA Siretta modems):
Bits per second: 115200
Data bits: 8
Parity: None
Stop bits: 1
Flow control: Hardware
10. Click Apply
11. Send the initial AT' command to determine the serial communication with the modem is working correctly. If communication is successful. you will get an OK' response from the modem. You can then issue any other commands as required.
Commands to Check System is Working
Check Serial Port is Working
AT
//Receive following when successful:
OK
Set Verbose Error Reporting
AT CMEE=2
//Receive following when successful:
OK
Commands for Basic Operation
Check PIN Registration
AT CPIN?
//Receive following when successful:
CPIN: READY
OK
//Receive following when SIM is not inserted:
CME ERROR: SIM not inserted
//Receive following when SIM requires a PIN code:
CME ERROR: SIM pin
Query Firmware Version
AT GMR
//Receive following when successful:
Firmware version (make a note of this)
Query IMEI Number
AT CGSN
//Receive following when successful:
IMEI number (make a note of this)
Cellular Network Operation Set Network Registration to ALL'
AT COPS=0
//Receive following when successful:
OK
Check Network Registration
AT CREG?
//Receive following when registered to a local network:
CREG: 0,1
//Receive following when registered to a roaming network:
CREG: 0,5
//Receive following when not registered to a network:
CREG: 0,0
//Receive following when not searching for a network:
CREG: 0,2
//Receive following when registration is denied:
CREG: 0,3
NOTE:
When experiencing registration problems, check the following:
1) Antenna is connected and screwed in tightly to unit
2) SIM is valid and has credit / active
3) SIM is setup for 2G / 3G / 4G services
4) SIM is SMS enabled
5) There is signal available for the cellular network in use
6) Ensure more than 15 seconds has elapsed since power up.
Check Network Signal Strength AT CSQ
//Receive signal value >9 when successful:
CSQ: 23,1
//Receive signal value =99 when there is no signal:
CSQ: 99,1
//Receive signal value less than 9 when there are network connectivity issues:
CSQ: 3,1
NOTE:
When experiencing bad network signal strength (less than 9), check the following:
1) Antenna is suitable for network in use and is tightly screwed to unit
2) There is good signal available for the cellular network in the area
3) Move the antenna near a window or preferably outside
4) Move the antenna to an elevated position (> 3M high)
5) Use a high gain antenna
6) Ensure short cable length (less than 3M) for cable connecting antenna to modem
GPRS Network Operation Check GPRS Context Availability
AT CGATT?
//Receive following when successful:
CGATT: 1
OK
//Receive following when content is not available or not enabled:
CGATT: 0
OK
Set GPRS APN For Your Network
AT CGDCONT=1, IP , APN Name
//Receive following when successful:
OK
NOTE:
To configure the APN name correctly, follow these steps :
1) Navigate to the following link: Common Global APN Settings
2) Select the country you are in (If your country is not listed please contact Siretta)
3) Select the network from the list (If your network is not listed please contact Siretta)
4) Insert the APN name from the table in to the APN Name field in the AT CGDCONT' command
Connect To GPRS Context AT#SGACT=1,1, APN Username , APN Password
//Receive following when successful (Where x.x.x.x is your assigned IP address):
#SGACT: x.x.x.x
OK
//Receive following when the APN Name / APN Username / APN Password is incorrect:
ERROR
NOTE:
To configure the APN username and password correctly, follow these steps:
1) Navigate to the following link: Common Global APN Settings
2) Select the country you are in (If your country is not listed please contact Siretta)
3) Select the network from the list (If your network is not listed please contact Siretta)
4) Insert the APN username from the table in to the APN Username field in the AT#SGACT' command
5) Insert the APN password from the table in to the APN Password field in the AT#SGACT' command.
Setup T
Most recent headlines
09/11/2025
Dalet today announced a transformative leap forward for media operations: Agentic Artificial Intelligence (AI) that unifies the Dalet ecosystem under one natura...
29/10/2025
29 10 2025 - Media release SBS, NITV and Screen Australia announce 2025 Digital Originals Shortlist
The 2025 Digital Originals shortlisted teams. Photo credit...
28/10/2025
ESPN Announces Monsters Funday Football', Its Latest Real-Time Animated Bro...
28/10/2025
SVG All-Stars: Catherine Chalfant, Manager, Remote Operations, ESPNThe Ole Miss alum is an operational force behind ESPN's extensive college-football catalo...
28/10/2025
Elevating the experience: AI and data take Ryder Cup to the next level By Joe OHalloran
Tuesday, October 28, 2025 - 10:25
Print This Story
NBC produced th...
28/10/2025
Conquering the Air (waves): Taking a close up look at the IBC Accelerator Priva...
28/10/2025
World Series 2025: Spectrum SportsNet LA Brings Dodgers Fans Closer to the Actio...
28/10/2025
Dylan Southern and Benedict Cumberbatch at the premiere of The Thing with Feathers (photo by George Pimentel / Shutterstock for Sundance Film Festival)...
28/10/2025
For three weeks in Lagos, Spotify's Greasy Tunes Caf pop-up brought the cit...
28/10/2025
Once a niche subculture, German rap has evolved into an influential cultural movement. Now, Spotify is giving the genre a new home with OFFCULT, a playlist dedi...
28/10/2025
Shane Delia's Malta serves up the Mediterranean this summer
28 October, 2025
Media releases
Feast on 9,000 years of culinary history Mondays from 24 No...
28/10/2025
SBS's global sporting festival continues with the FIVB Beach Volleyball Worl...
28/10/2025
Bilbao, October 28, 2025 - AgileTV, a leading technology solutions company for t...
28/10/2025
Disney, NBCUniversal, FOX, Paramount Each Achieve Double-Digit Monthly Growth
...
28/10/2025
CINCINNATI The E.W. Scripps Company has announced an agreement to sell WRTV, its local ABC-affiliated station in Indianapolis, to Circle City Broadcasting for $...
28/10/2025
Berklee College of Music and Berklee Valencia Named to Billboards 2025 Top Music...
28/10/2025
NEW YORK As AI usage continues to spike, a new study from IAB delves into an important aspect of how AI is transforming the advertising business with new data s...
28/10/2025
Charlie Jablonski, a broadcast tech pioneer who helped shape the modern era of Olympics television coverage, died Oct. 25 at his home in Lake George N.Y., the N...
28/10/2025
VIENNA, Austria Bitmovin has launched Bitmovin Observability, a new stand-alone video data solution that delivers real-time insights into video playback. The so...
28/10/2025
LOS ANGELES LucidLink, the file streaming platform, has announced a Frame.io integration and expanded mobile capabilities at Adobe Max....
28/10/2025
Mediagenix, a global leader in smart content solutions to profitably connect the right content to the right audience, today announced that it has joined the Ama...
28/10/2025
Lightware, an industry leader in connectivity and signal management solutions, has announced a major update to its Taurus
platform, which now delivers flawless...
28/10/2025
Following a successful mid-September International Broadcasting Convention in Amsterdam, Hiltron Communications will promote its full range of satellite communi...
28/10/2025
Open Broadcast Systems has chosen MC&S (Media Consulting & Services) as a reseller to help strengthen its presence in France.
With over twenty years of experi...
28/10/2025
Bitmovin, leading provider of video streaming solutions, has launched Bitmovin Observability, a new stand-alone video data solution that delivers real-time insi...
28/10/2025
Ease Live, the leader in interactive TV technology, today announced the successful launch of interactive graphical overlays for UEFA Champions League matches fo...
28/10/2025
LucidLink, the file streaming platform, today at Adobe MAX announced a Frame.io integration and expanded mobile capabilities, streamlining collaboration and hel...
28/10/2025
ATLANTA Gray Media has promoted Nick Hasenecz to general manager of WNDU, its NBC affiliate in the South Bend-Elkhart, Ind., market....
28/10/2025
Applications Open for Berklee Fenway Neighborhood Improvement Grant Boston nonprofits can apply by December 12 for funding to support community projects that ...
28/10/2025
Governments everywhere are racing to harness the power of AI - but legacy infras...
28/10/2025
AI is moving from the digital world into the physical one. Across factory floors...
28/10/2025
NVIDIA is delivering the telecom industry a major boost in open-source software for building AI-native 5G and 6G networks.
NVIDIA Aerial software will soon be ...
28/10/2025
The race to bottle a star now runs on AI.
NVIDIA, General Atomics and a team of international partners have built a high-fidelity, AI-enabled digital twin for ...
28/10/2025
Along the Pacific Ocean in Monterey, California, the Naval Postgraduate School (...
28/10/2025
To democratize access to AI technology nationwide, AI education and deployment c...
28/10/2025
Leading technology companies in aerospace and automotive are accelerating their ...
28/10/2025
28 Oct 2025
VEON's JazzCash Wins Silver Award for Innovation in Lending at ...
28/10/2025
Guests include Wayne Rooney, Maya Jama, Dame Laura Kenny, Chloe Kelly, Chris McC...
28/10/2025
The two-hour special, recorded live from the iconic Dolby Theatre in LA, will ai...
28/10/2025
Eutelsat upgrades teleports with Rohde & Schwarz satellite uplink amplifiers High efficiency and resilient Ku-band amplifiers for excellent RF performance
...
28/10/2025
These appointments come at a pivotal time for ABC, as the organisation continues to evolve to meet the changing needs of a digital-first media ecosystem. The ne...
28/10/2025
Scripps Research awarded $4 million to advance platform for neurodevelopmental disorders The California Institute for Regenerative Medicine (CIRM) grant support...
27/10/2025
You can touch this: Haptics becoming central to the virtual live experience By Adrian Pennington
Friday, October 24, 2025 - 09:12
Print This Story
The vid...
27/10/2025
A tale of two trailers: France's Stop & Go doubles up with its new hybrid tr...
27/10/2025
Pro Padel League Stages City's Cup Finals Inside NYC's Hammerstein Ballr...
27/10/2025
World Series 2025: Sportsnet Delivers Made-in-Canada' Moment for a Nation U...
27/10/2025
ESPN Extends Partnership With Sony's Beyond Sports To Expand Animated Altern...
27/10/2025
Reid Davenport attends the 2025 Sundance Film Festival premiere of Life After at The Ray Theatre on January 27, 2025, in Park City, UT. (Photo by Robin Marsha...
27/10/2025
As the days grow shorter and the nights get darker, there's nothing like getting swept up in a story that sends shivers down your spine. In honor of spooky ...