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
05/01/2027
Worlds first 802.15.4ab-UWB chip verified by Calterah and Rohde & Schwarz to be ...
01/06/2026
January 6 2026, 05:30 (PST) Dolby Sets the New Standard for Premium Entertainment at CES 2026
Throughout the week, Dolby brings to life the latest innovatio...
01/05/2026
January 5 2026, 18:30 (PST) NBCUniversal's Peacock to Be First Streamer to ...
01/04/2026
January 4 2026, 18:00 (PST) DOLBY AND DOUYIN EMPOWER THE NEXT GENERATON OF CREATORS WITH DOLBY VISION
Douyin Users Can Now Create And Share Videos With Stun...
20/01/2026
SVG Sit-Down: BitFire's Jim Akimchuk on the Future of Cloud, Remote, Softwar...
20/01/2026
From architecture to reality: What CBC's Milano Cortina 2026 workflows tell ...
20/01/2026
Milano Cortina 2026: Making the Winter Olympics and Paralympics workflow work fo...
20/01/2026
Countdown to Milano Cortina 2026: SVG Launches SportsTechLive Blog in Lead-up to...
20/01/2026
Grand finale: Rally Saudi Arabia pushes WRC to make the most of cameras and dron...
20/01/2026
State of Change: What's Happening in the Remote-Production Business?NEP Group, Game Creek Video, Dome Productions, Mobile TV Group, Program Productions exec...
20/01/2026
CFP National Championship 2026: A Look Back at SVG's Complete CoverageGo behind the scenes with ESPN, Game Creek Video, Van Wagner, and the champion Indiana...
20/01/2026
The Gotham, Film Independent, and Creators Coalition on AI Join Alliance
by Michelle Satter, Founding Senior Director, Sundance Institute's Artist Programs...
20/01/2026
The National Film and Video Foundation (NFVF), an agency of the Department of Sp...
20/01/2026
December, the first month of winter and the holiday season, has traditionally encouraged families to spend time together in front of the television. During this...
20/01/2026
During December, streaming's share of TV viewing in Mexico settled at 24.3%, an increase of 0.1 share points from the previous month.
Disclaimer: YUMI TV,...
20/01/2026
Christmas Day is Most-Streamed Day Ever with 55 Billion Viewing Minutes, led by...
20/01/2026
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
20/01/2026
Disguise and ASB GlassFloor today announced a strategic partnership that turns the arena floor into a fully customizable interactive digital surface. This will ...
20/01/2026
Last summer, ITV celebrated the tenth anniversary of its popular reality dating show, Love Island. To ramp up the excitement of series 12 (launched in the UK on...
20/01/2026
Berklee's Mark Ethier Named One of SPIN's Most Influential People in Mus...
20/01/2026
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
20/01/2026
Share Share by:
Copy link
Facebook
X
Whatsapp
Pinterest
Flipboard...
20/01/2026
Emergent, a provider of AI-powered media production solutions, today announced its presence at ISE 2026 in Barcelona, taking place February 3 6, where it will u...
20/01/2026
Back to All News
Netflix and Warner Bros. Discovery Amend Agreement to All-Cash Transaction
Business
20 January 2026
Global
Link copied to clipboard
All-C...
20/01/2026
Back to All News
Now You Can Play a Role in Our Live Events With Real-Time Voting
Elmar Nubbemeyer
VP, Member Product
Product
20 January 2026
Global
Link...
19/01/2026
CFP National Championship 2026: Indiana Football's Digital Crew Generate Hyp...
19/01/2026
CFP National Championship 2026: Van Wagner Relies on Experience for Indiana-Miam...
19/01/2026
CFP National Championship 2026: Game Creek Video Fields Premiere IP Compound for...
19/01/2026
CFP National Championship 2026: For a Slew of Studio Shows, ESPN Turns Hard Rock...
19/01/2026
CFP National Championship 2026: ESPN's Sweeping Live Game Production Leverag...
19/01/2026
The new L3Harris NOVA binocular system is the every-soldier goggle' - and the beginning of a new era for night-vison capability....
19/01/2026
The Majority of Those Surveyed Prefer to Buy Brands Who Advertise in Content Tha...
19/01/2026
Back to All News
Straight to Hell' Sets April 27 Premiere: Teaser Trailer,...
19/01/2026
New Workflow Enhancements for All Broadcast Pix Systems, Plus 4-Channel ISO Recording for Hybrid and Roadie Tyngsboro, Mass. - January 2025 - Broadcast Pix ann...
19/01/2026
Monday 19 January 2026
Sky News reinvents News at Ten for the modern audience with The Wrap
Sky News today announces The Wrap, a bold evolution of its 10pm ou...
19/01/2026
Back to All News
Netflix Announces the Series Nights & Days, Directed by Kamila...
19/01/2026
DPA Microphones is striking a new chord in piano miking with the debut of its DPK2015 Piano Stereo Kit, an out-of-the-box, plug-and-play miking solution that ta...
19/01/2026
DPA Microphones will present its 4099 CORE Instrument Microphone and redesigned...
19/01/2026
Trianel relies on Arvato Systems for future-proof data center operations
Moving to the cloud: Arvato Systems implements extensive IT migration project
Migrat...
19/01/2026
Celebrating 21 Years of the RT Choice Music Prize
RT Choice Music Prize
In association with IMRO and IRMA
Irish Album of the Year 2025 - Shortlist Announce...
18/01/2026
January 18 2026, 21:30 (PST) Dolby Cinema Arrives in Bengaluru: Dolby Laborator...
17/01/2026
Lightware, an industry leader in signal management, is helping to elevate the Google Meet experience with the introduction of an integration with Taurus UCX. Th...
17/01/2026
Clear-Com announced a strategic partnership with NETGEAR AV to offer four high-performance networking switches as original equipment manufacturer (OEM) solutio...
17/01/2026
QuickLink, a leading provider of award-winning video production and remote guest contribution solutions, today announced a new U.S. distribution partnership wit...
17/01/2026
NUGEN Audio announces the latest evolution of MasterCheck, its industry-trusted optimization plug-in for cross-platform mastering and loudness verification. Des...
17/01/2026
BHV has announced that it will highlight its new SportsBox remote vision mixer and picture processor at ISE in Booth #4H900 marking its official introduction in...
17/01/2026
Clear-Com will return to ISE 2026 to demonstrate its latest intercom solutions for broadcast, live production, and AV professionals. Exhibiting at Stand #4P700...
17/01/2026
Grass Valley, a leading provider in live production solutions, will exhibit at ISE 2026 in Barcelona from February 3 6, presenting its vision for how modern Bro...
17/01/2026
Utelogy Corporation, the global leader in connected workplace management, monitoring, control, automation and analytics closes out a record-breaking 2025. The c...
Applicable Products Part number Description 
