ENTERPRISE SIP CONNECTIVITY & TRUNKING

Dedicated SIP Trunks Engineered for Scale, Redundancy & Zero Lock-In

Carrier-grade, high-concurrency SIP trunking connecting your PBX, SBC, or cloud contact center directly to Dial Edge's global Tier-1 telecom network. Uncapped channels, automated API provisioning, TLS/SRTP encryption, and sub-1.2s post-dial delay.

Uncapped Elastic Channels 99.999% SLA Uptime Dual-Homed Redundancy TLS & SRTP Encryption

99.999%

Carrier SLA Uptime

Redundant Core PoPs

< 15 Mins

Rapid Turnup

Instant API Provisioning

Unlimited

Elastic Channels

Zero Capacity Bottlenecks

< 1.2s

Post-Dial Delay

Ultra-Fast Call Setup

INFRASTRUCTURE EXCELLENCE

Why High-Volume Enterprises Rely on Dial Edge SIP Trunks

Engineered from the ground up to replace rigid legacy PRIs with carrier-grade, programmable SIP connectivity built on ultra-resilient fiber backbones.

Elastic Channel Concurrency

Scale seamlessly from 10 to 10,000+ simultaneous sessions on demand. No artificial channel throttling, no costly upgrade penalties.

Hardened Signaling & Media Encryption

Full SIP TLS signaling encryption and SRTP media payload support. Combined with strict IP ACL whitelisting and real-time fraud firewalls.

Multi-Region Geographic Redundancy

Active-active redundant SIP gateways deployed across strategic North American & European data centers with automated DNS SRV failover.

High-CPS Contact Center Ready

Engineered specifically for high call-setup velocity (high CPS), predictive dialer bursts, conversational AI agents, and campaign launches.

Universal Codec & Interop Standards

Native support for uncompressed G.711u/a, bandwidth-optimized G.729ab, and crystal-clear HD Opus wideband codecs across all IP-PBX platforms.

Real-Time CDRs & Webhook Telemetry

Automated REST API provisioning, instant CDR export, continuous MOS audio quality telemetry, and live traffic analytics on a single pane of glass.

UNIVERSAL INTEROPERABILITY

Zero Hardware Lock-In. Works With Any IP-PBX or SBC.

Dial Edge SIP Trunks adhere rigorously to IETF RFC 3261 standards. Whether you run an on-premises PBX, a private SBC cluster, or cloud unified communications, our trunks connect in minutes.

Open Source IP-PBX Certified 100%

Asterisk & FreePBX

IP ACL or SIP Registration

TLS & SRTP Supported

Cloud / On-Prem UC Certified 100%

3CX Phone System

IP ACL or Registration

TLS & SRTP Supported

Enterprise CallManager Certified 100%

Cisco UCM (CUCM)

Direct SIP Trunk / IP Whitelist

Encrypted SIP Signaling

Enterprise Contact Center Certified 100%

Avaya IP Office & Aura

IP ACL / Session Manager

TLS & SRTP Supported

Cloud Collaboration Certified 100%

Microsoft Teams Direct Routing

SBC Certified Interconnect

Mandatory TLS 1.2+ & SRTP

Carrier-Grade SBC / Softswitch Certified 100%

FreeSWITCH & Kamailio

High-CPS IP Authentication

Full Cryptographic Suite

High-Volume Predictive Dialers Certified 100%

Vicidial & Hosted Dialers

Direct Carrier IP Interconnect

Optimized G.711 / G.729

Cloud Contact Centers (CCaaS) Certified 100%

Genesys Cloud & Five9

Bilateral Cloud SIP Interconnect

Encrypted Cloud Trunking

Don’t see your equipment listed? Dial Edge supports all RFC 3261 SIP-compliant hardware and software. Talk to an integration engineer →

TELECOM ENGINEERING

Carrier-Grade Technical Specifications

Every SIP trunk is configured on our tier-1 session border controller clusters with transparent signaling parameters and ultra-low jitter routing.

Signaling ProtocolSIP v2.0 (IETF RFC 3261), SDP (RFC 4566)
AuthenticationStatic IP Whitelisting (ACL) or SIP Digest (User / Password)
Transport LayersUDP, TCP, and TLS 1.2 / TLS 1.3
Voice EncryptionSRTP (RFC 3711) with AES-128 & AES-256 cipher suites
Supported CodecsG.711u (PCMU), G.711a (PCMA), G.729a/b, Opus HD Wideband
DTMF TransmissionRFC 2833 / RFC 4733 Out-of-band & SIP INFO
Number FormattingStrict E.164 (+1NXXNXXXXXX) or 10-digit national format
Keepalive & HeartbeatIn-dialog SIP OPTIONS ping with sub-100ms response
Caller IdentityRFC 3325 (P-Asserted-Identity / Remote-Party-ID) & STIR/SHAKEN
Fax ProtocolT.38 Real-Time Fax Relay & G.711 Pass-Through fallback
Provisioning & ControlRESTful JSON API with Webhook event notifications
Network RedundancyDNS SRV Records (RFC 2782) + Dual Geographically Separated PoPs

FLEXIBLE DEPLOYMENT PROFILES

Built for Every Telephony Architecture

Choose the deployment profile engineered specifically for your traffic mix, concurrency requirements, and infrastructure goals.

Corporate Offices & Multi-Branch UCaaS

Enterprise PBX Trunk

Purpose-built to replace aging PRIs and provide reliable office telephony with E911 and zero channel limitations.

Included Capabilities

  • Unlimited simultaneous channel bursting
  • Free Local Number Portability (LNP)
  • Automated dual-location failover
  • E911 location mapping support
  • Cisco, Avaya, 3CX & Teams certified
  • 24/7 proactive NOC monitoring
Deploy PBX Trunk
Most Popular

Outbound Dialers & Predictive BPOs

High-Concurrency Contact Center Trunk

Engineered for high-CPS call bursts, predictive dialer clusters, and conversational AI agents requiring sub-second call setup.

Included Capabilities

  • Uncapped CPS (Calls Per Second) capacity
  • Sub-1.2s Post-Dial Delay (PDD)
  • Dynamic caller ID (CLI) rotation support
  • Direct Vicidial & FreeSWITCH routing
  • Real-time ASR & NER analytics dashboard
  • Aggressive per-minute volume decks
Configure Dialer Trunk

Telecom Aggregators & CPaaS Operators

Carrier & Wholesale Interconnect

Dedicated high-bandwidth SIP interconnects engineered for voice aggregators, ISPs, and communications service providers.

Included Capabilities

  • Bilateral Tier-1 carrier interconnects
  • Granular NPANXX / LRN margin billing
  • Private Equinix cross-connects available
  • STIR/SHAKEN Level-A digital signing
  • Dedicated technical account manager
  • Custom SLA with 15-minute NOC escalation
Request Carrier Interconnect

PROVEN APPLICATIONS

Target Use Cases & Enterprise Applications

Whether powering mission-critical financial call centers or modernizing distributed corporate voice, Dial Edge provides the stability your business demands.

01

PBX Modernization & PRI Replacement

Migrate legacy T1/PRI telecom circuits to elastic SIP trunks. Cut monthly telecom overhead by up to 60% while gaining unlimited scale and geographic mobility.

02

Disaster Recovery & Redundant Failover

Maintain zero-downtime voice operations. If your primary PBX or internet circuit experiences an outage, Dial Edge automatically reroutes inbound traffic to secondary IPs or cellular lines.

03

High-Volume Contact Centers & BPOs

Run thousands of simultaneous calls across distributed agent pools. Benefit from instant call setups, high answer rates, and pristine audio clarity that keeps agents productive.

04

Conversational AI & Voice Agent Bots

Power high-concurrency automated outbound and inbound AI voice assistants. Ultra-low latency and low jitter ensure natural conversational turns without awkward pauses.

RAPID DEPLOYMENT

From Request to Production in 4 Simple Steps

We eliminate bureaucratic telecom delays. Get dedicated SIP trunks running in hours, not weeks.

01

Configuration & Interconnect Setup

Provide your public PBX IP address and chosen authentication method (IP ACL or SIP credentials). Our NOC provisions your dedicated trunk endpoints.

02

Interoperability & Codec Testing

Execute live test calls with our telecom engineering team to verify audio codecs, DTMF signaling, caller ID presentation, and failover pathways.

03

DID Allocation & Number Porting

Provision fresh local or toll-free numbers from 120+ countries, or initiate seamless zero-downtime Local Number Portability (LNP) for your existing phone numbers.

04

Production Cutover & 24/7 Monitoring

Route production traffic with complete confidence. Backed by real-time MOS telemetry, automated fraud defense, and around-the-clock senior NOC support.

FREQUENTLY ASKED QUESTIONS

Everything You Need to Know About Dedicated SIP Trunks

Clear answers to common questions about interconnects, porting, codec support, and SLAs.

A Dedicated SIP Trunk is a virtual telecommunications circuit that connects your on-premise or cloud IP-PBX (such as Asterisk, FreePBX, 3CX, Cisco CUCM, or Microsoft Teams) directly to Dial Edge Telecom's carrier voice network over IP. It allows your organization to make and receive concurrent phone calls over the internet without needing traditional copper T1/PRI telephone lines.

Ready to upgrade your connectivity?

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