# GL Series **URL:** https://forum.sierrawireless.com/c/iot-gateways/gl-series/128.md [Latest](https://forum.sierrawireless.com/latest.md) · [Categories](https://forum.sierrawireless.com/categories.md) · [Tags](https://forum.sierrawireless.com/tags.md) --- ## [About the GL Series category](https://forum.sierrawireless.com/t/about-the-gl-series-category/23602)
**Author:** [@thibs](https://forum.sierrawireless.com/u/thibs)\ **Replies:** 0
Topics related to GL series IoT gateways --- ## [GL7812 in USB mode](https://forum.sierrawireless.com/t/gl7812-in-usb-mode/35782)
**Author:** [@simonbone](https://forum.sierrawireless.com/u/simonbone)\ **Replies:** 3\ **Last updated:** [February 26, 2026, 5:09pm UTC](https://forum.sierrawireless.com/t/gl7812-in-usb-mode/35782 "2026-02-26T17:09:19Z")
We have the GL7812 gateway, and currently use it in serial port mode. These are attached to a PC running debian buster. (The use of debian buster is due to a proprietary application not involved in communication with t… --- ## [GL7812 server configuration assistance](https://forum.sierrawireless.com/t/gl7812-server-configuration-assistance/34814)
**Author:** [@Fernando.Guillen](https://forum.sierrawireless.com/u/Fernando.Guillen)\ **Replies:** 9\ **Last updated:** [May 12, 2025, 3:40pm UTC](https://forum.sierrawireless.com/t/gl7812-server-configuration-assistance/34814 "2025-05-12T15:40:16Z")
Basic Information: My goal is simple. To enable this GL7812 to run as a pass through in server mode. I am using a Private Static IP SIM I am connected with the correct VPN credentials Using HL78xx - AT Command Referenc… --- ## [ATD returns "Operation not supported" on GL7812](https://forum.sierrawireless.com/t/atd-returns-operation-not-supported-on-gl7812/32651)
**Author:** [@xgrj63](https://forum.sierrawireless.com/u/xgrj63)\ **Replies:** 5\ **Last updated:** [June 28, 2024, 7:41am UTC](https://forum.sierrawireless.com/t/atd-returns-operation-not-supported-on-gl7812/32651 "2024-06-28T07:41:38Z")
I’m trying to dial a number on GL7812 but the ATD command doesn’t work. It returns an ERROR with a CME error code of 4 - Operation not supported. The modem is registered and RSSI is quite good. I’m not sure what else to… --- ## [GL7812 - it is not detected by system (Windows 10) and it couldn't register](https://forum.sierrawireless.com/t/gl7812-it-is-not-detected-by-system-windows-10-and-it-couldnt-register/32564)
**Author:** [@szymon.czapla](https://forum.sierrawireless.com/u/szymon.czapla)\ **Replies:** 4\ **Last updated:** [June 26, 2024, 11:32am UTC](https://forum.sierrawireless.com/t/gl7812-it-is-not-detected-by-system-windows-10-and-it-couldnt-register/32564 "2024-06-26T11:32:51Z")
Hello, I couldn’t find a similar topic to that one. I have made the setup exatly like in manual: SIM card is insterted correctly. Given power is between 6-24V a max current is set to 1A Modem is connected to laptop de… --- ## [Is GL7611/GL7605 available in Poland?](https://forum.sierrawireless.com/t/is-gl7611-gl7605-available-in-poland/31868)
**Author:** [@james11](https://forum.sierrawireless.com/u/james11)\ **Replies:** 8\ **Last updated:** [March 20, 2024, 6:07am UTC](https://forum.sierrawireless.com/t/is-gl7611-gl7605-available-in-poland/31868 "2024-03-20T06:07:11Z")
There are include some LTE bands, but I wonder if they are europe certified. --- ## [Inquiry of Europe product by Gateway product](https://forum.sierrawireless.com/t/inquiry-of-europe-product-by-gateway-product/31850)
**Author:** [@james11](https://forum.sierrawireless.com/u/james11)\ **Replies:** 4\ **Last updated:** [March 19, 2024, 7:21am UTC](https://forum.sierrawireless.com/t/inquiry-of-europe-product-by-gateway-product/31850 "2024-03-19T07:21:42Z")
Currently, Semtech only the GL7611 (North America) / GL7605 (Japan) / GL7812 (LPWA) models are being mass produced. What products do I need to use in Europe by IoT Gateway product? (existing Europe model, GL7600 is EOL… --- ## [Is modem manager only connecting with proxy gateway or simple gateway?](https://forum.sierrawireless.com/t/is-modem-manager-only-connecting-with-proxy-gateway-or-simple-gateway/27749)
**Author:** [@panchal.pratik](https://forum.sierrawireless.com/u/panchal.pratik)\ **Replies:** 3\ **Last updated:** [November 23, 2022, 3:50am UTC](https://forum.sierrawireless.com/t/is-modem-manager-only-connecting-with-proxy-gateway-or-simple-gateway/27749 "2022-11-23T03:50:31Z")
Hello, I have a query regarding the modem manager. Modem manager will it helping to transmission of data over the serial network via AT commands. --- ## [GL8200 modem sms are not going](https://forum.sierrawireless.com/t/gl8200-modem-sms-are-not-going/28228)
**Author:** [@am00360334](https://forum.sierrawireless.com/u/am00360334)\ **Replies:** 34\ **Last updated:** [November 9, 2022, 6:16am UTC](https://forum.sierrawireless.com/t/gl8200-modem-sms-are-not-going/28228 "2022-11-09T06:16:22Z")
SMS are not going from the modem GL8200. Tried to send sms through AT command. But not working? --- ## [GL7600 Network Interface Configuration (linux)](https://forum.sierrawireless.com/t/gl7600-network-interface-configuration-linux/25630)
**Author:** [@dominik1](https://forum.sierrawireless.com/u/dominik1)\ **Replies:** 6\ **Last updated:** [December 1, 2021, 11:50am UTC](https://forum.sierrawireless.com/t/gl7600-network-interface-configuration-linux/25630 "2021-12-01T11:50:39Z")
Hey there, I’m trying to connect an embedded setup (NVIDIA Jetson Nano + Ubuntu 18.04) via a GL7600 to the Internet (using NCM mode). I was following the instructions in this SWIR technical note (paragraph 4). We can g… --- ## [GL7600/HL76xx: Identifying the number of an incoming call](https://forum.sierrawireless.com/t/gl7600-hl76xx-identifying-the-number-of-an-incoming-call/24622)
**Author:** [@JanBurg](https://forum.sierrawireless.com/u/JanBurg)\ **Replies:** 1\ **Last updated:** [August 20, 2021, 7:25am UTC](https://forum.sierrawireless.com/t/gl7600-hl76xx-identifying-the-number-of-an-incoming-call/24622 "2021-08-20T07:25:42Z")
Hello, in my application I need to identify the number of an incoming call. Older modems have the command AT+CLCC for this purpose. AT+CLCC works with the HL76xx devices but it is not documented in the AT command guide.… --- ## [AT+CSQ and signal Quality](https://forum.sierrawireless.com/t/at-csq-and-signal-quality/24220)
**Author:** [@profort](https://forum.sierrawireless.com/u/profort)\ **Replies:** 13\ **Last updated:** [July 14, 2021, 7:00am UTC](https://forum.sierrawireless.com/t/at-csq-and-signal-quality/24220 "2021-07-14T07:00:44Z")
Dear sirs. I have a question about the signal Quality and GL7600. We have another modem from another brand and when I send AT+CSQ i receive +CSQ: 19,99. So i have GL7600. I send exactly the same AT command (AT+CSQ). Th… --- ## [GL7500 with AT&T and Kore SIM: Only the first connection attempt succeeds](https://forum.sierrawireless.com/t/gl7500-with-at-t-and-kore-sim-only-the-first-connection-attempt-succeeds/24040)
**Author:** [@sslobodov](https://forum.sierrawireless.com/u/sslobodov)\ **Replies:** 3\ **Last updated:** [June 30, 2021, 10:10am UTC](https://forum.sierrawireless.com/t/gl7500-with-at-t-and-kore-sim-only-the-first-connection-attempt-succeeds/24040 "2021-06-30T10:10:13Z")
I’ve got the GT7500 modem work reliably with Verizon, Rogers and AT&T, except for the AT&T with a Kore SIM. In that case the first TCP session works, but the second one fails to open, and the only fix is to reset or powe… --- ## [Persistent storage of the PDP context and APN name in GL7500](https://forum.sierrawireless.com/t/persistent-storage-of-the-pdp-context-and-apn-name-in-gl7500/23917)
**Author:** [@sslobodov](https://forum.sierrawireless.com/u/sslobodov)\ **Replies:** 6\ **Last updated:** [June 14, 2021, 5:17pm UTC](https://forum.sierrawireless.com/t/persistent-storage-of-the-pdp-context-and-apn-name-in-gl7500/23917 "2021-06-14T17:17:12Z")
In my application I need to configure the APN and the PDP context before the system can connect. The APN and the context depend on the customer setup and network (e.g. Verizon, AT&T, Kore, Rogers). What I would like to d… --- ## [GL7500 with Verizon: ERROR reply to AT+KTCPSTART=1](https://forum.sierrawireless.com/t/gl7500-with-verizon-error-reply-to-at-ktcpstart-1/23833)
**Author:** [@sslobodov](https://forum.sierrawireless.com/u/sslobodov)\ **Replies:** 3\ **Last updated:** [June 2, 2021, 9:35am UTC](https://forum.sierrawireless.com/t/gl7500-with-verizon-error-reply-to-at-ktcpstart-1/23833 "2021-06-02T09:35:20Z")
I am trying to use a Verizon version of the GL7500 with our product and sometimes it connects, but often gives an ERROR. Sadly, the docs and the threads have not been helpful so far. Here is a typical annotated sequence… --- ## [GL7600: HTTP only with GSM](https://forum.sierrawireless.com/t/gl7600-http-only-with-gsm/23845)
**Author:** [@JanBurg](https://forum.sierrawireless.com/u/JanBurg)\ **Replies:** 4\ **Last updated:** [June 1, 2021, 11:37am UTC](https://forum.sierrawireless.com/t/gl7600-http-only-with-gsm/23845 "2021-06-01T11:37:56Z")
Hi, I’m trying to open a HTTP connection with the LTE/GSM modem GL7600. Following the example of section 18.8 in the HL76xx AT Commands Guide I repeatedly got errors like this AT+KHTTPCFG=1,“xyz.de”,80,0 +KHTTPCFG: 1 … --- ## [How to extract/implement the configuration of a GL8200](https://forum.sierrawireless.com/t/how-to-extract-implement-the-configuration-of-a-gl8200/22442)
**Author:** [@j.tissier](https://forum.sierrawireless.com/u/j.tissier)\ **Replies:** 7\ **Last updated:** [January 19, 2021, 3:05am UTC](https://forum.sierrawireless.com/t/how-to-extract-implement-the-configuration-of-a-gl8200/22442 "2021-01-19T03:05:25Z")
I am trying to configure a GL8200 modem to look like a working GL8200. Despite several tests and a similar configuration, it does not communicate. Do you know how to extract a configuration from one modem and inject it… --- ## [GL7500 PPP Connection issue](https://forum.sierrawireless.com/t/gl7500-ppp-connection-issue/22342)
**Author:** [@pcho](https://forum.sierrawireless.com/u/pcho)\ **Replies:** 5\ **Last updated:** [December 14, 2020, 9:26am UTC](https://forum.sierrawireless.com/t/gl7500-ppp-connection-issue/22342 "2020-12-14T09:26:42Z")
Hello, Any helps will be appreciated. Please see log below: Dec 9 23:45:47 raspberrypi chat\[4277\]: – got it Dec 9 23:45:47 raspberrypi chat\[4277\]: send (AT+CMEE=2^M) Dec 9 23:45:47 raspberrypi chat\[4277\]: expect… --- ## [3G fallback on GL7500](https://forum.sierrawireless.com/t/3g-fallback-on-gl7500/22299)
**Author:** [@pcho](https://forum.sierrawireless.com/u/pcho)\ **Replies:** 1\ **Last updated:** [December 4, 2020, 1:30am UTC](https://forum.sierrawireless.com/t/3g-fallback-on-gl7500/22299 "2020-12-04T01:30:51Z")
I guess that fallback to 3G from LTE is automatic. Can I control it through AT command? If so, can you inform me how? Regards, Phil Cho --- ## [AirLink GL6110 Windows 10 driver](https://forum.sierrawireless.com/t/airlink-gl6110-windows-10-driver/21510)
**Author:** [@clickndeploy](https://forum.sierrawireless.com/u/clickndeploy)\ **Replies:** 2\ **Last updated:** [September 14, 2020, 10:53am UTC](https://forum.sierrawireless.com/t/airlink-gl6110-windows-10-driver/21510 "2020-09-14T10:53:22Z")
May I know if there’s a USB driver for AirLink GL6110? Thanks. --- ## [Air link GL8200](https://forum.sierrawireless.com/t/air-link-gl8200/21237)
**Author:** [@roy.moshe1](https://forum.sierrawireless.com/u/roy.moshe1)\ **Replies:** 3\ **Last updated:** [August 19, 2020, 12:36pm UTC](https://forum.sierrawireless.com/t/air-link-gl8200/21237 "2020-08-19T12:36:18Z")
Hi, We tried to connect to the computer mistakenly using a crossed RS232 compatible for the Campbell Scientific CR1000. The modem is now unresponsive. Is there anything we can do? We tried contacting the company Sierr… --- ## [GL7600(HL7692), PPP stopped working after fw upgrade](https://forum.sierrawireless.com/t/gl7600-hl7692-ppp-stopped-working-after-fw-upgrade/17547)
**Author:** [@ldammen](https://forum.sierrawireless.com/u/ldammen)\ **Replies:** 2\ **Last updated:** [July 16, 2020, 9:51pm UTC](https://forum.sierrawireless.com/t/gl7600-hl7692-ppp-stopped-working-after-fw-upgrade/17547 "2020-07-16T21:51:00Z")
Hi. Had a working PPP communication over PPP, but after upgrade from 2.23 to 2.27 it stopped working. Tried tp roll back to old fw, but still not working. Any suggestions on what could be wrong. Have checked baudrate etc… --- ## [GL8200 Android/Linux pppd connection failure](https://forum.sierrawireless.com/t/gl8200-android-linux-pppd-connection-failure/19039)
**Author:** [@mihuilk19](https://forum.sierrawireless.com/u/mihuilk19)\ **Replies:** 0\ **Last updated:** [January 20, 2020, 8:09am UTC](https://forum.sierrawireless.com/t/gl8200-android-linux-pppd-connection-failure/19039 "2020-01-20T08:09:06Z")
We use the GL8200 in our devices a long time and everything was OK (serial numbers started with NC) but in the last revision (serial numbers started with 5E) the modem stops working with Android/Linux Point-to-Point Pro… --- ## [GL7500: AT+WMANTSEL=11 + AT&W0 = firmware corruption](https://forum.sierrawireless.com/t/gl7500-at-wmantsel-11-at-w0-firmware-corruption/18212)
**Author:** [@Bob1974](https://forum.sierrawireless.com/u/Bob1974)\ **Replies:** 5\ **Last updated:** [November 27, 2019, 6:52am UTC](https://forum.sierrawireless.com/t/gl7500-at-wmantsel-11-at-w0-firmware-corruption/18212 "2019-11-27T06:52:16Z")
I’m trying to configure the GL7500 to only use the primary antenna since we don’t have anything connected to the diversity antenna port. The manual says the setting is stored with the AT&W command, but if I issue that co… --- ## [GL7600 fails second HTTPS POST request using AT commands](https://forum.sierrawireless.com/t/gl7600-fails-second-https-post-request-using-at-commands/18302)
**Author:** [@c.laursen](https://forum.sierrawireless.com/u/c.laursen)\ **Replies:** 3\ **Last updated:** [November 18, 2019, 10:01am UTC](https://forum.sierrawireless.com/t/gl7600-fails-second-https-post-request-using-at-commands/18302 "2019-11-18T10:01:20Z")
Hello, (Posting GL7600 here, eventhough GL7600 datasheet refers to HL series) As the title states, I’m trying to execute two HTTPS POST requests right after each other using AT commands sent from a datalogger. The fir… --- ## [GL7x00 linux interface](https://forum.sierrawireless.com/t/gl7x00-linux-interface/17489)
**Author:** [@simonFotokite](https://forum.sierrawireless.com/u/simonFotokite)\ **Replies:** 1\ **Last updated:** [November 18, 2019, 6:56am UTC](https://forum.sierrawireless.com/t/gl7x00-linux-interface/17489 "2019-11-18T06:56:44Z")
Hello, I’m trying to a computer running ubuntu to the internet via a GL7600 (and later a GL7500) connected via microusb. The GL is recognized in lsusb, it creates interfaces wwan{0,1,2,3} in ip a and ModemManager can i… --- ## [GL7500 and Verizon](https://forum.sierrawireless.com/t/gl7500-and-verizon/17750)
**Author:** [@rod](https://forum.sierrawireless.com/u/rod)\ **Replies:** 1\ **Last updated:** [November 13, 2019, 2:59am UTC](https://forum.sierrawireless.com/t/gl7500-and-verizon/17750 "2019-11-13T02:59:25Z")
Has anyone had any success connecting the GL7500 to a Verizon network. I immediately get a registration denied (+CREG: 3) when I power up the modem. I’ve been in touch with Verizon support who told me it may be a modem p… --- ## [GL7500 Data modem setup](https://forum.sierrawireless.com/t/gl7500-data-modem-setup/16186)
**Author:** [@mascenzi](https://forum.sierrawireless.com/u/mascenzi)\ **Replies:** 2\ **Last updated:** [November 13, 2019, 2:58am UTC](https://forum.sierrawireless.com/t/gl7500-data-modem-setup/16186 "2019-11-13T02:58:39Z")
Hello, I’m new using these devices and I’m looking to do what I thought would be a simple embedded modem to connect to the internet. I’m using this device to replace an older USB cell modem from AT&T, which was connecte… --- ## [PDP mayhem, GL7500](https://forum.sierrawireless.com/t/pdp-mayhem-gl7500/17116)
**Author:** [@Bob1974](https://forum.sierrawireless.com/u/Bob1974)\ **Replies:** 2\ **Last updated:** [October 23, 2019, 10:17am UTC](https://forum.sierrawireless.com/t/pdp-mayhem-gl7500/17116 "2019-10-23T10:17:04Z")
Is there any pattern to setting up a working PDP context for whatever sim someone puts in these modems? It seems like sometimes PDP contexts are available to use, sometimes they’re not. A while back I switched our firm… --- ## [GL6110 extended message and 8 bit support](https://forum.sierrawireless.com/t/gl6110-extended-message-and-8-bit-support/17601)
**Author:** [@namirrebjd](https://forum.sierrawireless.com/u/namirrebjd)\ **Replies:** 0\ **Last updated:** [September 18, 2019, 7:19pm UTC](https://forum.sierrawireless.com/t/gl6110-extended-message-and-8-bit-support/17601 "2019-09-18T19:19:09Z")
Hi, I have a GL6110 which I have used to send and receive messages for a number of years with no issue, since about March I have been receiving extended messages from my network provider. Firstly it appears extended mes… [Next page](https://forum.sierrawireless.com/c/iot-gateways/gl-series/128.md?page=1)