Approved GSM Modems
This page lists the GSM modems approved for use with Alert.
Currently Distributed
GSM 4G Vocal Modem — Ref. GSM-VOC-IP

| Specification | Details |
|---|---|
| Interface | IP |
| SMS | Yes — via SMPP protocol |
| Voice calls | Yes — via SIP protocol |
| Networks | 2G, 3G, 4G |
| SIM cards | 1 × Standard (2FF) |
| Included | Power supply, antenna |
| Compatibility | Windows 7, 8, 10, 11 — Server 2008 R2, 2012, 2016, 2019, 2025 |
| Min. Alert version | 4.0 rev 2 build 82 |
note
SMS and voice features (SMPP/SIP) are only available on devices supplied by Micromedia International.
Approved — Not Distributed
Lantronix / Maestro M100 3G

| Specification | Details |
|---|---|
| Interface | Serial RS-232 (USB converter) |
| SMS | Yes |
| Voice calls | Yes (under certain conditions) |
| Networks | 2G, 3G — quad-band |
| SIM cards | 1 × Standard (2FF) |
| Compatibility | Windows XP, Vista, 7, 8 — Server 2003, 2008 |
Lantronix / Maestro M110

| Specification | Details |
|---|---|
| Interface | Serial RS-232 |
| SMS | Yes |
| Voice calls | No |
| Networks | 2G (EU), 3G (NA), 4G/LTE |
| Compatibility | Windows 7, 8, 10 — Server 2003, 2008 |
Sierra Wireless GL7600

| Specification | Details |
|---|---|
| Interface | Serial RS-232 |
| SMS | Yes |
| Voice calls | No |
| Networks | 2G (EU), 3G (NA), 4G/LTE |
| Compatibility | Windows 7, 8, 10 — Server 2003, 2008 |
Discontinued
The following modems are no longer distributed but remain approved for use with existing installations.
Maestro M100 2G

| Specification | Details |
|---|---|
| Interface | Serial RS-232 (no driver required) |
| SMS | Yes |
| Voice calls | No |
| Compatibility | Windows XP, Vista, 7, 8 — Server 2003, 2008 |
Sierra Wireless Fastrack XTend

| Specification | Details |
|---|---|
| Interface | Serial RS-232 (no driver required) |
| SMS | Yes |
| Voice calls | No |
| Compatibility | Windows XP, Vista, 7, 8, 10 — Server 2003, 2008, 2012 |
Teleorigin RB800Q
| Specification | Details |
|---|---|
| Interface | Serial RS-232 (no driver required) |
| SMS | Yes |
| Voice calls | No |
| Compatibility | Windows XP, Vista, 7, 8 — Server 2003, 2008 |
Multitech MTCBA-G2-U
| Specification | Details |
|---|---|
| Interface | USB (bus-powered) |
| SMS | Yes |
| Voice calls | No |
| Compatibility | Windows XP, Vista, 7 — Server 2003, 2008 |
| Incompatible | Windows 8 |
Multitech MTCBA-G-U-F4
| Specification | Details |
|---|---|
| Interface | USB (bus-powered) |
| SMS | Yes |
| Voice calls | No |
| Compatibility | Windows XP, Vista — Server 2003, 2008 |
| Incompatible | Windows 7, 8 |