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Modernize your business telephony by bridging traditional PSTN lines with IP-based communication networks. DG Tech's VoIP gateway services cover gateway selection, SIP trunk configuration, QoS tuning, and failover setup—enabling clear voice quality, reduced inter-office calling costs, and seamless integration with IP PBX and call center platforms.
We work with enterprises migrating from legacy EPABX systems, BPOs scaling outbound operations, and branch offices needing centralized dial plans. Our engineers configure FXO, FXS, and GSM gateways to match your call volume, redundancy requirements, and existing network architecture.
Post-deployment, DG Tech provides monitoring, troubleshooting, and capacity planning so your voice infrastructure remains stable as call patterns and headcount evolve.
Key Features
- Gateway sizing for FXO, FXS, GSM, and SIP channels
- SIP trunk registration with Indian telecom providers
- QoS and VLAN configuration for voice priority
- Failover routing between primary and backup trunks
- Integration with Asterisk, FreePBX, and commercial IP PBX
- Call quality monitoring and codec optimization
Key Benefits
- Lower long-distance and inter-branch calling costs
- Unified dial plans across offices and remote workers
- Flexible scaling by adding channels without rewiring
- Improved disaster recovery with SIP trunk redundancy
- Foundation for call center and IVR expansion
- Expert support reducing voice downtime and misconfiguration
Scope of Work
Our engagement covers the following deliverables and activities for voip gateway services.
- Current telephony assessment and call volume analysis
- Gateway hardware procurement and rack installation
- SIP account provisioning with service provider
- IP PBX dial plan and outbound route configuration
- QoS policy implementation on switches and routers
- Test calls, fax pass-through, and CLI verification
- Documentation and ongoing monitoring setup
Technologies & Tools
We work with industry-standard platforms and equipment relevant to your environment.
Grandstream GXW SeriesDinstar GSM GatewayYeastar TG SeriesCisco ISR Voice GatewaysAsteriskFreePBX3CXSIP Trunks (Jio, Airtel, Tata)
Our Service Process
A structured workflow ensures consistent delivery, clear milestones, and measurable outcomes.
- 1
Telephony Audit
Existing lines, PBX type, call volumes, and pain points are documented to define gateway requirements.
- 2
Design & Procurement
Gateway model, channel count, and SIP provider are finalized. Hardware is procured and staged for configuration.
- 3
Configuration
SIP trunks, dial plans, codecs, and security settings are configured on gateway and IP PBX.
- 4
Network Optimization
QoS, bandwidth allocation, and firewall rules are applied to prioritize voice traffic.
- 5
Testing & Handover
Inbound, outbound, and failover scenarios are validated before production cutover and user notification.
Frequently Asked Questions
Common questions about our voip gateway services offering.
A VoIP gateway connects traditional phone lines (PSTN, GSM) to IP networks, allowing IP PBX systems and softphones to make and receive calls through standard telecom channels.
Ready to Get Started with VoIP Gateway Services?
Contact DG Tech Computers for a consultation. We will assess your requirements and propose a tailored solution with clear timelines and pricing.
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