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4G VoIP Gateway · 4 Configurations

4G VoIP Gateway Mobile Voice and SMS for SIP Networks

Choose 1, 8, 16 or 32 GSM/3G/4G channels with 1, 32, 64 or 128 SIM slots. Connect mobile voice and SMS to SIP, IP PBX and cloud voice platforms, with multi-SIM rotation and voice failover options.

Frequency bands, SIM slot count and feature support depend on the selected configuration and region.

4G gateway portfolio 4 configurations
1 Channel 1 SIM slot
8 Channels 32 SIM slots
16 Channels 64 SIM slots
32 Channels 128 SIM slots
Mobile voice · SMS · Failover 1–32 channels
1–32 Channels From a single mobile line to 32 voice channels.
1–128 SIM Slots Multi-SIM models provide four SIM slots per channel.
VoLTE & GSM/3G/4G Connect mobile networks to SIP voice infrastructure.
Voice, SMS & API Voice calls, SMS and HTTP API for application integration.
Gateway Configurations

Four capacity points for mobile-to-SIP projects

Match channel count to voice traffic and SIM slot count to the SIM rotation or SMS model used by the project.

1 channels 1 SIM slots
Single Line

1-Channel Gateway

Compact single-channel gateway for a small office, backup trunk or single mobile line.

  • 1 GSM/3G/4G channel
  • 1 SIM slot
  • SIP and VoLTE voice
8 channels 32 SIM slots
Multi-SIM

8-Channel Gateway

Eight channels with four SIM slots per channel for small call-termination or SMS projects.

  • 8 GSM/3G/4G channels
  • 32 hot-swappable SIM slots
  • 4 SIMs per channel
16 channels 64 SIM slots
Multi-SIM

16-Channel Gateway

Sixteen channels and 64 SIM slots for growing call centers and multi-site offices.

  • 16 GSM/3G/4G channels
  • 64 hot-swappable SIM slots
  • 4 SIMs per channel
32 channels 128 SIM slots
High Density

32-Channel Gateway

Thirty-two channels and 128 SIM slots for high-volume voice and SMS.

  • 32 GSM/3G/4G channels
  • 128 hot-swappable SIM slots
  • 4 SIMs per channel
Compare Configurations

Channels and SIM slots at a glance

The 8, 16 and 32-channel configurations use four SIM slots per channel; the 1-channel configuration uses one SIM slot.

Configuration Channels SIM slots SIMs / channel Best for
1-Channel111Single line or backup trunk
8-Channel8324Small call termination or SMS
16-Channel16644Growing call center or multi-site
32-Channel321284High-volume voice or SMS

SIM slot count and multi-SIM capability vary by configuration. Confirm frequency bands, operator certification and feature support for the destination market before ordering.

Common Capabilities

Voice, SMS and SIM management in one gateway

The portfolio is designed for mobile-to-SIP voice, SMS services and backup trunk applications. Exact features depend on the model.

Mobile accessGSM / WCDMA / LTE; VoLTE voice on supported models
Voice codecsG.711A/U, G.723.1, G.729AB; echo cancellation; DTMF RFC2833 / SIP INFO
SIPSIP v2.0, SIP trunk and trunk group, port and port group routing
SMSSMS/USSD, SMS to Email, Email to SMS, HTTP API; SMPP on supported models
SIM handling4 SIM slots per channel on multi-SIM models; front-panel hot-swappable SIM slots
Number controlCaller/called number manipulation, white/black list, auto CLIP
ManagementWeb UI, HTTPS/HTTP, CDR, syslog, firmware upgrade, auto provisioning
SecuritySignaling and RTP encryption, HTTPS, IP white/black list

This is a portfolio summary. Frequency bands, SIM capacity, SMS API options and regulatory certification must be confirmed for the selected model and destination market.

Deployment Scenarios

Mobile connectivity where landlines are limited

Use 4G gateways as primary voice trunks, backup routes or SMS infrastructure for distributed sites.

SME / Branch

Mobile Voice for IP PBX

Connect mobile lines to an IP PBX or cloud voice platform for offices, shops and sites with limited fixed-line access.

Fit: 1 or 8-channel configurations for small sites and backup trunks.

Multi-Site

Mobile Trunking & Failover

Use GSM/3G/4G as a primary or backup voice path between sites, with SIP routing and number manipulation.

Fit: 8 or 16-channel configurations for multi-site organizations and continuity planning.

Service Provider

Call Termination & SMS

Support call termination, call centers and bulk SMS applications with multi-SIM rotation and API access.

Fit: 16 or 32-channel configurations for higher voice and SMS volume.

Plan Your 4G Gateway Deployment

Choose the channel and SIM capacity that fits the traffic

Tell us about the mobile operator, voice volume, SIM rotation model and SIP platform. We will help size the right configuration.

Discuss your 4G gateway requirements

Share your project scope and we will respond with a tailored plan.

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