Cellular access into SIP
Bridge GSM, WCDMA, LTE, or eSIM mobile voice channels into SIP and IAX2 voice platforms.
- Use mobile channels as voice trunks for IPPBX, SIP server, or softswitch environments.
- SWG-M20X through SWG-3032
- SWG-4016E/4032E eSIM

Bridge GSM, WCDMA, LTE, 4S SIM-capacity, and eSIM mobile access into SIP and IAX2 voice platforms with compact, rack-oriented, and high-channel SWG gateway options.
OpenVox SWG gateways bridge mobile networks into SIP and IAX2 systems for sites that need cellular voice trunks, SMS/USSD workflows, or eSIM-based mobile access.

Start with the mobile-channel range, then choose standard SIM, 4S high SIM capacity, or eSIM access for the deployment model.

2 or 4 mobile ports
Compact cellular access for small sites that need mobile voice, SMS, and USSD paths into SIP or IAX2.

8 mobile ports
Entry rack gateway for branch mobile trunks, SMS/USSD operation, and SIP/IAX2 voice integration.

16 or 32 mobile ports
Standard 16/32-channel SWG range for higher mobile call volume, routing control, and rack deployments.

64/128 SIM capacity or 16/32 eSIM channels
Use 4S or eSIM SWG families when SIM inventory, provisioning method, and remote operations are key project requirements.
Use the same gateway operating model across wireless access projects while choosing the SWG hardware that matches channel count and SIM strategy.
Bridge GSM, WCDMA, LTE, or eSIM mobile voice channels into SIP and IAX2 voice platforms.
Support SMS send, receive, forwarding, group send, SMS to email, remote control, and USSD operation paths.
Use PIN identification, SMS-limit, call-limit, and routing controls to support SIM-based gateway operations.
Use web access, SSH, configuration backup, firmware update, logs, CDR, packet capture, and cloud management.
Plan the mobile side, IP voice side, messaging workflows, and operations controls together before rollout.
Compare mobile channel count, SIM strategy, SIP/IAX2 integration, messaging operation, management, and hardware differences across OpenVox SWG gateways.
| Specification | SWG-M20X | SWG-3008 | SWG-3016 | SWG-3032 | SWG-3016/32-4S | SWG-4016E/4032E |
|---|---|---|---|---|---|---|
| Mobile Access | ||||||
| Mobile channels | 2 or 4 | 8 | 16 | 32 | 16 or 32 channels with 64 or 128 SIM capacity | 16 or 32 eSIM channels |
| Mobile access mode | GSM / WCDMA / LTE | GSM / LTE 4S | eSIM LTE family | |||
| Network interfaces | 2 | |||||
| IP Voice Integration | ||||||
| IP voice side | SIP / IAX2 with SIP v2.0 RFC3261 compliance | |||||
| Trunk management | SIP/IAX2 registration, trunk creation, and trunk grouping | |||||
| Routing control | Flexible routing rules between mobile channels and IP voice trunks | |||||
| DTMF modes | RFC2833, inband, and SIP INFO | |||||
| Voice codecs | G.711A/U, G.729, G.722, G.726, GSM; 4S documentation also lists G.723 | |||||
| Messaging And SIM Operations | ||||||
| SMS and USSD | SMS send/receive/group send, SMS to email, SMS forwarding, SMS remote control, and USSD | |||||
| SMS automation | Quick reply, automatic resend, SMS routing, and API-oriented messaging workflows | |||||
| SIM controls | PIN identification with SMS-limit and call-limit operation controls | |||||
| 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 system logs | |||||
| Physical | ||||||
| LAN / WAN | 1 LAN + 1 WAN | |||||
| Network ports | 2 network interfaces | |||||
| Deployment format | Compact desktop and rack-oriented SWG families | |||||
| Operating temperature | 0°C ~ 50°C | |||||
| Humidity range | 10% ~ 90% non-condensing | |||||
Use OpenVox product pages, technical documents, and support channels to validate channel count, mobile network mode, messaging workflows, and remote operations.
Download
Review each SWG model page for channel options, product images, resources, and configuration details.
Download
Use product documents to verify mobile access mode, SIP/IAX2 settings, messaging functions, and physical specifications.
Support
Use the support path for firmware, troubleshooting, cloud management guidance, and post-purchase maintenance material.
Planning
Share mobile channel count, SIM strategy, SIP platform, site count, quantity, and messaging requirements with OpenVox.
Tell OpenVox your mobile channel count, GSM/WCDMA/LTE or eSIM requirement, SIP platform, messaging workflow, site plan, and quantity. We will help confirm the right SWG model for your deployment.