Global Voice Infrastructure for Calls, SIP, and Routing.
Build, scale, and optimize voice experiences worldwide. Reliable voice, SIP trunking, and programmable calling APIs.
Voice Infrastructure
Global Voice Products & Infrastructure
Voice product overview
VoIP Termination
Global outbound voice termination with direct carrier interconnects and transparent rate cards.
VoIP Origination
Inbound voice origination with local and toll-free numbers connected directly to your SIP endpoints.
SIP Trunking
Elastic concurrent calling channels with IP authentication, TLS/SRTP, and instant provisioning.
Call Forwarding
Intelligent multi-destination call forwarding with automated failover and hunt-group policies.
Voice Broadcasting
High-throughput automated outbound voice message delivery with instant disposition tracking.
Call Recording
Encrypted dual-channel audio recording with compliant cloud storage and REST API retrieval.
IVR Connectivity
Low-latency DTMF tone detection, dynamic speech prompts, and programmable routing trees.
Enterprise Voice
High-availability multi-region SIP infrastructure with dedicated SLA guarantees and custom routing.
Wholesale Carrier Voice
High-CPS wholesale voice routing with custom rate decks and dedicated NOC engineering.
Find Voice Rates & Coverage
Search live rates for inbound or outbound voice routes.
Popular Destinations
View all countriesDIDWire
SIP Interconnection & Route Architecture
Carrier-grade SIP trunking architecture with direct carrier SBC interconnects, geo-redundant routing, low PDD, and high concurrency.
SIP Interconnection & Route Architecture — Telecommunications Schematic
Verified Carrier InterconnectSIP Interconnection & Route Architecture
Carrier-grade routing with direct SBC interconnects, active-active geo-redundancy, and cryptographic attestation.
Commercial Flexibility
Commercial Pathways: Retail vs. Wholesale
Choose between instant self-serve rate discovery for modern business communications or bespoke high-capacity bilateral carrier interconnects
Retail & Business Communications
On-demand, pay-as-you-go global voice, messaging, and virtual numbers with zero contract lock-in and instant rate transparency.
What's Included
- Transparent Public Rates: Instant rate search across global destinations with sub-second lookups.
- No Sneaky Minimums: Top up only what you consume with exact per-second billing granularity.
- Developer Quickstart: Instant REST API token access, webhooks, Postman collections, and SDKs.
- Redundant Architecture & Support: High-availability geo-redundant routing with 24/7 technical desk access.
Carriers & High-Volume Wholesale
Bespoke LCR and CLI rate decks, massive CPS concurrency, direct bilateral cross-connects, and priority NOC engineering.
Enterprise & Carrier SLA
- Bespoke Bilateral Rate Cards: Tailored pricing tiers for high-volume call centers and aggregator traffic.
- Ultra-High Concurrency: Elastic SIP trunks engineered to scale call throughput dynamically without clipping.
- Direct Carrier Interconnects: Geo-redundant PoPs with STIR/SHAKEN Level-A attestation and CLI preservation.
- Dedicated Interconnect Engineer: 1-on-1 onboarding, custom SIP trunk tuning, and priority 24/7 NOC channel.
| Commercial Dimension | Retail & Business Path | Wholesale & Carrier Interconnect |
|---|---|---|
| Minimum Monthly Commitment | $0 / No Minimum | High Volume ($1k+ / Bespoke RFQ) |
| Call Attempt Rate (CPS) | Up to 25 CPS standard burst | Custom Scalable High CPS |
| Rate Discovery Format | Interactive Web & Public REST API | Bespoke CSV Rate Card / LCR Matrix |
| Billing Granularity | 1/1 Per-Second Billing | 1/1 or 6/6 Negotiated Bilateral Terms |
| STIR/SHAKEN Attestation | Full Level-A / Verified CLI | Full Level-A + Identity Headers / SIP Diversion |
| Support & NOC Escalation | 24/7 Support Desk & Documentation | Direct Telegram & Teams Priority NOC Channel |
DIDWire
Programmable Voice APIs & Code Samples
RESTful endpoints, real-time event webhooks, SDKs for Node, Python, and PHP, and global edge API gateways.
Developer experience
Build against documented APIs
Public discovery endpoints expose only approved data. Administrative and MCP writes remain permissioned and auditable.
curl -X POST "https://api.didwire.example/v1/messages" \
-H "Authorization: Bearer sk_live_..." \
-H "Content-Type: application/json" \
-d '{
"to": "+14155550199",
"channel": "sms",
"body": "Your DIDWire verification code is: 482901"
}'
# Response: 202 Accepted
{
"id": "msg_9f82d1c0",
"status": "queued",
"segments": 1
}Platform Trust
Global Low-Latency Infrastructure & SLA Proof
Geo-redundant interconnect PoPs with low PDD, automated failover, and high-availability carrier routing
Clean E.164 normalization, direct CLI retention, and low-latency routing across global telecom markets.
Self-serve web console alongside high-throughput REST, SMPP, and SIP API endpoints for developers.
Direct bilateral communication with telecom engineers for routing tickets, interconnect sizing, and rate questions.
Public real-time incident reports, latency metrics, and component health monitoring across all services.
DIDWire
Voice Guides, Developer Resources & Telecom Tools
Explore technical guides, codec comparison calculators, and developer resources for voice infrastructure.
Voice & SIP Guides
PBX, Asterisk & FreeSWITCH setup
Step-by-step interconnect configurations for SIP trunks, codec negotiation (G.711/G.729/Opus), and NAT traversal.
Voice Control API
Call origination, legs & events
Programmable voice APIs for automated dialing, conference bridging, call recording, and real-time SIP status webhooks.
Bandwidth & Codec Tools
VoIP bandwidth & CPS sizing
Calculate MOS score expectations, packet overhead per codec, CPS concurrency limits, and international dialing codes.
STIR/SHAKEN & Attestation
Caller-ID verification & KYC
Full Level-A attestation compliance, robocall mitigation database (RMD) registration, and legal caller-ID management.
Voice Telemetry & PoPs
Real-time network latency
Live interconnect telemetry across geo-redundant PoPs, low intra-region latency, and active NOC feeds.
Rate Cards & Decks
Downloadable wholesale decks
Access full CSV/Excel destination rate sheets, A-Z CLI termination decks, bilateral rate cards, and technical blueprints.
Connect to direct carrier voice origination and termination.
Low PDD, elastic concurrent channels, crystal-clear Opus/G.711 audio, and transparent per-minute rate cards with zero minimum commitments.
Transparent Commercial Rates
Browse transparent A-Z rate decks, local DID pricing, and SMS volume tiers with zero hidden commitments.
- Live country-by-country rate search
- Downloadable CSV rate decks
- Flexible prepaid or billed terms
Enterprise & High-Volume Interconnect
Custom CPS limits, bilateral carrier agreements, dedicated account management, and SLA contract guarantees.
- Custom committed CPS thresholds
- 24/7 dedicated NOC escalation desk
- STIR/SHAKEN Level-A token signing
Programmable CPaaS APIs
Integrate voice calling, SMS/RCS messaging, and DID provisioning into your software stack in minutes.
- RESTful endpoints & real-time webhooks
- Official Node, Python, Go, and PHP SDKs
- Instant sandbox test environment