Carrier-grade voice, built forany scale.
The voice infrastructure behind your calls matters as much as the calls themselves. Smart Carrier delivers carrier-grade SIP trunking, flexible BYOC transport, and network-level security — built for high availability and built to scale.
INFRASTRUCTURE
ONLINE
— Primary
— Carrier A
Three layers ofcarrier-grade voice
Smart Carrier voice infrastructure covers every layer of your calling stack — from the trunk that carries your traffic, to the intelligence that routes it, to the firewall that protects it.
SIP Trunking & Outbound Calling
Carrier-grade SIP trunking for inbound and outbound voice traffic. Designed for scalability, reliability, and compliance — powering high-volume contact centers and enterprise voice platforms.
- Inbound & outbound SIP at any scale
- Elastic channel capacity — scale up instantly
- Directly interconnect with major U.S. carriers
- Compliance-ready with STIR/SHAKEN attestation
SIP Transport (Bring Your Own Carrier)
Use Smart Carrier’s platform with your existing carrier relationships. SIP Transport lets you maintain carrier flexibility while layering in our compliance, intelligence, and routing services.
- Keep your existing carrier contracts and rates
- Apply SmartCarrier compliance and intelligence on top
- Route traffic across multiple carriers simultaneously
- No lock-in — switch or add carriers at any time
SIP Firewall & Load Balancer
Protect and scale your voice infrastructure. Our SIP Firewall and Load Balancer defend against fraud and attacks while ensuring high availability, redundancy, and optimal call routing.
- Block toll fraud, DoS, and spoofing attacks
- Intelligent load balancing across SIP endpoints
- Automatic failover with zero call interruption
- Custom firewall rules per trunk or campaign
Your carriers,smarter.
You’ve spent time building carrier relationships and negotiating rates. Smart Carrier’s SIP Transport lets you keep all of that — while adding the compliance intelligence, routing optimization, and security your platform needs to operate at carrier grade.
No obligation to move your voice traffic to SmartCarrier trunks
Compliance and number intelligence applied to your existing call flow
Route across multiple carriers with intelligent failover built in
Add or remove carriers at any time without platform changes
SIP Firewall and Load Balancer available as a layer on top of BYOC
Existing contracts, rates, and interconnects
PBX, UCaaS platform, or dialer
Run inline before every call attempt
LERG, LRN, carrier data applied per call
Optional — applied to your existing trunks
BYOC lets you layer SmartCarrier.io on top of your existing voice setup — no ripping and replacing required.
From setup tolive calls
Everything your voice stackneeds to perform
Elastic SIP Trunking
Scale concurrent call capacity up or down instantly — no provisioning delays, no channel limits baked into contracts. Pay for what you use when you need it.
Intelligent Load Balancing
Distribute call traffic across multiple SIP endpoints and carriers based on availability, cost, and performance — with automatic failover if any path degrades.
SIP Firewall & Fraud Prevention
Block toll fraud, SIP denial-of-service attacks, unauthorized registrations, and spoofed traffic before it reaches your infrastructure — in real time, at the network edge.
Multi-Carrier Routing
Route calls across multiple carriers simultaneously based on cost, quality, and destination — with least-cost routing and quality-based failover built into every call path.
STIR/SHAKEN Integration
Call authentication is built into the SIP infrastructure layer — every call is attested and verified before it leaves your network, protecting recipients and your brand reputation.
Real-Time Call Monitoring
Monitor call quality, latency, concurrent channels, and error rates in real time from the Smart Carrier portal. Set alerts and thresholds to catch issues before they impact calls.
Protect your network before threatsreach your calls
Voice infrastructure is an active target for fraud, toll abuse, and denial-of-service attacks. Smart Carrier’s SIP Firewall operates at the network edge — blocking threats before they consume resources, generate fraudulent charges, or degrade call quality.
Block toll fraud attempts before charges are incurred
Defend against SIP-based denial-of-service and flood attacks
Prevent unauthorized SIP registrations and endpoint spoofing
Custom firewall rules per carrier, trunk, or campaign
All blocked traffic logged for audit and forensic review
4,200 malformed INVITE requests/sec from 185.220.x.x
Primary path degraded — traffic rerouted to secondary
Unauthorized international call to premium-rate number
Unknown SIP endpoint attempting trunk registration
SLA-backed infrastructure uptime
Concurrent calls supported per deployment
Average SIP signaling latency
Built for every environmentthat runs on voice
Carriers & Service Providers
Interconnect with Smart Carrier SIP infrastructure to extend your network reach, add compliance intelligence to your call flows, and protect your network from fraud at the edge.
High-Volume Contact Centers
Power thousands of concurrent outbound calls with elastic SIP trunking, built-in compliance enforcement, and real-time monitoring — without worrying about infrastructure ceiling.
Enterprise Voice Platforms
Replace legacy PSTN connections with carrier-grade SIP trunking. Maintain existing carrier relationships with BYOC while adding security, compliance, and intelligent routing on top.
UCaaS & Hosted VoIP Providers
Use BYOC to integrate Smart Carrier intelligence into your hosted voice platform without replacing your carrier stack. Give your customers compliance and security without rebuilding your infrastructure.
Multi-Carrier Environments
Manage voice traffic across multiple carriers from a single control plane. Intelligent routing, cost optimization, and failover are handled automatically — with full visibility in the SmartCarrier portal.
Networks Under Fraud Pressure
If your network is experiencing toll fraud, SIP floods, or unauthorized traffic, Smart Carrier’s SIP Firewall can be deployed as a standalone protective layer with no changes to your existing setup.
Everything you need to know
Do I have to move my voice traffic to Smart Carrier platform?
No. With SIP Transport (BYOC), you keep your existing carrier relationships and route traffic through Smart Carrier to layer on compliance, intelligence, and security — without changing your carrier.
What kind of concurrent call volume can you support?
Smart Carrier SIP trunking supports tens of thousands of concurrent calls, inbound and outbound, per deployment, with elastic capacity that scales on demand. There are no hard channel caps — capacity grows with your traffic.
How does failover work if a carrier path goes down?
The Load Balancer monitors all active SIP paths continuously. If a path degrades or goes offline, traffic is automatically rerouted to a healthy path — with zero call interruption for in-progress calls.
What types of fraud does the SIP Firewall protect against?
The SIP Firewall defends against toll fraud, SIP denial-of-service attacks, SIP scanning, and spoofed traffic. Custom rules can be applied per trunk, carrier, or IP range.
How quickly can we get connected?
Most SIP trunking and BYOC setups are live within a few hours. Our engineering team works directly with your team to configure endpoints, test call paths, and validate compliance before you go live.
Infrastructure thatnever lets you down
Carrier-grade voice services built for reliability, scalability, and flexibility — with compliance and security baked in at every layer. Built for the teams that power high-volume calling environments.
Ready to build on carrier-grade voice?
Talk to our engineering team about connecting your platform to Smart Carrier voice infrastructure. SIP trunking, BYOC, and firewall setup typically goes live within hours.
