Wholesale U.S. Voice Termination, STIR/SHAKEN attested.
Premium tier-1 U.S. termination with A-level call attestation, intelligent Least-Cost Routing and 99.99% uptime — engineered to lift answer rates and keep your calls trusted on the destination network.
- A-level STIR/SHAKEN attestation included
- Listed in the FCC Robocall Mitigation Database
- All 50 states + Puerto Rico, USVI, Guam
U.S. Route Snapshot
Everything you need on a U.S. route, included.
From attestation to analytics, our standard U.S. wholesale offering is built to clear modern compliance and quality bars without add-ons or surprises.
STIR/SHAKEN — A-Level
Full A-level attestation where you have an established relationship with us and the calling number is verified.
FCC RMD Listed
DialSync is listed in the FCC Robocall Mitigation Database, satisfying downstream provider eligibility checks.
Coast-to-Coast Coverage
Termination across all 50 U.S. states plus Puerto Rico, U.S. Virgin Islands, Guam and Northern Mariana Islands.
Intelligent LCR
Multiple parallel routes per destination with automatic failover and quality-based routing decisions.
Real-Time CDRs
Stream CDRs in real time via SFTP, webhook or REST. Reconcile billing as calls complete, not the next morning.
Per-Second Billing
1-second billing by default. Transparent published rates per LATA/NPA, no minimum-bill-time surprises.
DTMF & Codec Support
RFC 2833, SIP INFO and in-band DTMF supported. G.711, G.729 and Opus codecs across the network.
TCPA-Aware Monitoring
Anomaly detection on calling patterns, abandoned rates and number reputation to flag risk before it scales.
24/7 NOC
Named technical account manager, 24/7 operations, and 15-minute critical-incident response.
Verified caller ID. Higher answer rates.
The FCC mandates STIR/SHAKEN call authentication for IP-originated voice traffic in the United States. Calls that aren't attested are increasingly down-rated, labeled as "Spam Likely", or blocked altogether by carriers and analytics services.
DialSync signs every eligible outbound U.S. call with the appropriate attestation level — and where we are the originating carrier with a verified customer and number, that's A-level.
- A-level on traffic from verified customer numbers
- B/C levels handled correctly for indirect or gateway traffic
- RMD-listed for downstream eligibility checks
- Documentation provided on request for your audits
Termination wherever your customers dial.
Comprehensive coverage across U.S. geographic numbers, mobile (wireless) and toll-free destinations.
Geographic & Mobile
Termination to U.S. geographic landline and mobile numbers across all NPA/NXXs. Wireless and wireline routes are differentiated with separate rate-decks.
Toll-Free Termination
Termination to U.S. toll-free numbers across all toll-free prefixes, with origin-based routing where required by the destination RespOrg.
Who uses our U.S. wholesale routes?
From contact centers running outbound campaigns to platforms reselling SIP — we serve teams that take quality and compliance seriously.
Contact Centers
Outbound and inbound campaigns that need clean CLI and high answer rates.
BPOs
Multi-client BPOs needing isolated trunks, granular billing and traceback support.
Resellers
SIP resellers and ITSPs reselling capacity downstream with their own branding.
SaaS Platforms
Telephony-enabled SaaS, CRMs and dialer platforms embedding voice into their product.
Get a tailored U.S. rate sheet
U.S. wholesale rates depend on your traffic mix, destination split, and committed volume. Send us your traffic profile and we'll send back routes, test credentials and a published rate-deck — usually within one business day.
- Custom rate-deck per traffic profile
- Per-second billing with no minimum bill-time
- Test credentials available before commitment
U.S. Wholesale FAQ
What attestation level will my traffic receive? +
Where you are an established DialSync customer and we have verified your right to use the calling number(s), traffic receives A-level attestation. Indirect or unverifiable traffic is signed at B or C as appropriate.
Are you listed in the FCC Robocall Mitigation Database? +
Yes. DialSync is listed in the FCC RMD with a current robocall mitigation plan on file. We can share our OCN and RMD filing details on request.
How fast can I be live? +
Once KYC is complete, most U.S. customers are provisioned and passing test calls within 24–48 hours. Production traffic typically follows within the same week.
How do you handle traceback requests? +
We respond to all ITG, FCC and law-enforcement traceback requests within 24 hours and act on findings under our Acceptable Use Policy. See our Robocall Mitigation Plan.
What capacity can you handle? +
Channel capacity scales on demand. We provision based on your declared peak concurrent channels, with headroom for bursts. Larger customers can run dedicated trunks.
Ready to test a U.S. route?
Send us your monthly volume estimate and target destinations. We'll reply with rates, test credentials and a path to production within one business day.