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SIP Trunking

Elastic SIP trunks for PBX, softswitch, and dialer platforms with flexible channel capacity.

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Platform connectivity

Connect any PBX, softswitch, or dialer to carrier-grade voice.

SIP trunking bridges your on-premise or cloud telephony platform to DialSync's wholesale network. Whether you run Asterisk, FreeSWITCH, 3CX, or a proprietary softswitch, our engineers validate interoperability before production traffic flows.

Trunks are provisioned with clear channel limits, codec policies, and CLI presentation rules so your operations team knows exactly how calls will behave on the network.

  • Asterisk, FreeSWITCH, 3CX, and custom platforms
  • Concurrent channel scaling on demand
  • Inbound and outbound trunk profiles
  • SIP over UDP, TCP, or TLS

SIP Trunking at a glance

CodecsG.711, G.729
AuthIP or register
ChannelsElastic
FailoverAutomatic
Migration support

Move off PRI, legacy carriers, or fragmented trunk contracts.

Migrating to SIP reduces hardware costs and gives you the flexibility to burst capacity during campaign peaks. Our team runs parallel testing, cutover planning, and post-migration monitoring so your agents never sit idle.

Consolidate multiple carrier relationships into a single DialSync trunk with unified billing, CDRs, and support — simplifying your vendor management overnight.

  • PRI-to-SIP migration playbooks
  • Parallel test environment included
  • Cutover support during business hours
  • Post-migration quality review at 48 hours

SIP Trunking at a glance

Migration timeline1–2 weeks
Test periodIncluded
Cutover windowScheduled
SupportEngineer-led
Enterprise reliability

Built for contact centers that cannot afford dropped calls.

Every SIP trunk rides on the same carrier-grade routing infrastructure that powers our wholesale termination. Quality metrics are monitored per trunk, and failover paths activate automatically when upstream carriers degrade.

Pair your trunks with DIDs, toll-free numbers, and compliance services for a complete inbound/outbound voice stack from one provider.

  • 99.99% monthly uptime SLA
  • Real-time trunk health dashboards
  • Named technical account manager
  • 24/7 NOC incident response

SIP Trunking at a glance

SLA99.99%
NOC response< 15 min critical
Monitoring24/7 proactive
CDRsReal-time
Key benefits

Why teams choose DialSync for SIP Trunking

Elastic channels

Scale concurrent call capacity up or down without hardware changes or long lead times.

Codec flexibility

G.711, G.729, and wideband support with configurable DTMF relay modes.

IP authentication

Register-based or IP-auth trunks with dedicated credentials per environment.

Failover routing

Automatic reroute to backup carriers during upstream outages or quality events.

Usage reporting

Real-time channel utilization, ASR, and CDR exports from your client portal.

Overview

SIP trunking from DialSync connects your PBX, softswitch, or dialer platform to our carrier-grade voice network over standard SIP. Scale channel capacity up or down as your traffic profile changes — no hardware swaps required.

We support G.711, G.729, and wideband codecs with configurable DTMF modes, CLI presentation, and failover routing to keep calls flowing during upstream events. Trunks are provisioned with dedicated credentials, IP authentication, and real-time usage reporting.

Whether you are migrating from PRI, consolidating carriers, or launching a new contact center, our SIP trunking team handles provisioning, testing, and cutover support end to end.

Get a quote

Request pricing for SIP Trunking

Tell us about your traffic profile, destinations, and timeline. Our sales team typically responds with a tailored rate sheet within one business day.

Inquiring about: SIP Trunking

More services

Explore our other VoIP services

Wholesale VoIP TerminationUSA/UK/Canada DIDsToll-Free NumbersPredictive Dialer SolutionsAI AMD & Voice DetectionWhite Label VoIPCarrier-Grade RoutingBilling & Client PortalSTIR/SHAKEN Compliant TrafficCall Recording & MonitoringVICIdial Hosting & SupportFraud Protection & Compliance24/7 NOC Support

Ready to build your voice platform?

Wholesale termination, SIP trunking, DIDs, dialer hosting, and 24/7 NOC support — all from one carrier-grade provider.

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