Build modular GSM, WCDMA, and LTE access for SIP and IAX2 voice platforms with VoxStack chassis options that scale from 4 to 44 wireless channels.
GWP gateways connect GSM, WCDMA, and LTE mobile networks with SIP and IAX2 VoIP platforms through a modular chassis design that can grow by plug-in wireless modules.
Select VS-GWP1600 for 1U modular access up to 20 channels, or VS-GWP2120 when the project needs more module slots and up to 44 channels.
Use the GWP series when the wireless gateway project needs a serviceable chassis, module-level expansion, and the same calling and messaging system used across OpenVox wireless gateways.
Scale from 4 to 44 GSM, WCDMA, or LTE channels by selecting the chassis and plug-in module plan.
Connect wireless channels to SIP and IAX2 platforms with endpoint registration, trunk grouping, and routing rules.
Operate SMS, USSD, SMPP, SMS API, forwarding, quick reply, SMS to Email, and SMS remote control workflows.
Use hot-swap modules, Web GUI, SSH, logs, CDR, packet capture, backup, firmware update, and cloud management.
Plan the wireless access side, SIP/IAX2 voice integration, messaging workflows, and service operations as one deployment model.
Compare the chassis-level hardware differences first. Shared software rows are merged because VS-GWP1600 and VS-GWP2120 use the same wireless gateway system.
| Specification | VS-GWP1600 | VS-GWP2120 |
|---|---|---|
| Mobile Access | ||
| Plug-in modules | Up to 5 | Up to 11 |
| Wireless channels | 4-20 GSM/WCDMA/LTE channels | 4-44 GSM/WCDMA/LTE channels |
| Module service | Hot-swap SIM cards and GSM/WCDMA/LTE modules | |
| IP Voice Integration | ||
| IP voice side | SIP / IAX2 with SIP v2.0 RFC3261 compliance | |
| Platform compatibility | IMS/NGN, IPPBX, SIP servers, Asterisk, 3CX, FreeSWITCH, and BroadSoft | |
| Trunk management | SIP/IAX2 registration, trunk creation, and trunk grouping | |
| Routing control | Flexible routing rules between wireless channels and IP voice trunks | |
| DTMF modes | RFC2833, inband, and SIP INFO | |
| Voice codecs | G.711A/U, G.722, G.726, G.729A, and GSM | |
| Messaging And SIM Operations | ||
| SMS and USSD | SMSC, SMS, USSD, SMPP, SMS API, SMS to Email, forwarding, quick reply, and remote control | |
| SMS automation | Bulk transceiver, automatic resend, coding detection, HTTP to SMS, SMS to HTTP | |
| SIM controls | PIN identification, call limit, call time limit, lock SIM, SMS limit, CLIR, and carrier binding | |
| Management And Diagnostics | ||
| Local administration | Web GUI and SSH access | |
| Remote management | Configuration backup/upload, firmware update, logs, CDR, and OpenVox cloud management | |
| Diagnostics | TCP/SIP capture, ping, traceroute, status pages, and SIP/IAX logs | |
| Physical | ||
| Network | 2 x 10/100M WAN ports | |
| Dimensions | 434 x 330 x 44 mm | 434 x 330 x 88 mm |
| Weight | 4.8 kg | 6.5 kg |
| Power | 22 W | 50 W |
| Operating temperature | 0°C ~ 50°C | |
| Humidity range | 10% ~ 90% non-condensing | |
Use OpenVox product documents and support channels to validate chassis size, module plan, wireless channel count, SIP/IAX2 integration, messaging workflows, and remote operations.
Planning
Confirm whether the deployment needs the 1U VS-GWP1600 chassis or the higher-capacity 2U VS-GWP2120 chassis.
Documents
Review GWP documentation for module slots, channel range, SIP/IAX2 settings, SMS/USSD functions, and physical specifications.
Support
Use support resources for firmware, troubleshooting, cloud management, configuration backup, and maintenance workflows.
Sizing
Share channel count, module plan, SIP platform, SMS/USSD needs, site count, and quantity with OpenVox.
