SIP Trunking

Service · SIP Trunking

Replace your PRI. Keep your PBX. Cut your bill.

SIP trunks that connect to your existing PBX. We deliver the carrier-grade SIP; you keep your investment in your phone system. No forklift required.

Get a migration plan   or call 866-304-4300

Founded 2001 · 99.999% uptime SLA

Triton Cloud PBX — sip-trunking
99.999%
Uptime SLA
150+
Countries DID
Since 2001
Northeast roots
3 offices
Worcester · Dublin · BVI
B2B only
No residential

Capabilities

What you get

Bring your PBX

Works with Mitel, Avaya, Cisco, FreePBX, Asterisk, 3CX, and any SIP-compliant PBX.

Scalable concurrent calls

Buy what you need. Add more in minutes. No PRI ports to install.

Redundant carriers

Failover across multiple upstream carriers. Survives single-carrier outages.

E.164 + LIDB

Outbound CNAM, LIDB-registered. Calls show your company name where supported.

STIR/SHAKEN

Signed calls per FCC mandate. Lower risk of being labeled spam-likely.

Geographic redundancy

Inbound DIDs route to your primary + secondary endpoint. Auto-failover.

Reliability with receipts

  • 99.999% uptime SLA with written credit schedule
  • Geographically redundant infrastructure
  • P1 response in 15 minutes; named engineer for migrations
  • Cutover scheduled outside business hours with documented rollback

Compliance posture

  • SRTP/TLS encryption standard, not upsold
  • Configurable call recording with 30-day to 7+ year retention
  • BAA and DPA templates available pre-sales
  • Audit log export on request

Frequently asked

Questions we get asked the most

Will SIP trunking work with our existing PBX?

If your PBX supports SIP (most made in the last 15 years do), yes. We provide the SBC if your PBX needs one, and we test interop before cutover.

How many concurrent calls can we have?

Trunks scale on demand. We size based on your busiest hour with 20% headroom. Common sizes: 4, 8, 16, 32, 64, 128 concurrent.

What about emergency calls and 911?

Full E911 support. We register each user location and route emergency calls correctly. Multi-site locations get per-site E911 records.

Can we keep our existing numbers?

Yes. Standard porting applies. We can also run hybrid for a transition period where some numbers stay on your old carrier while others port.

Do you offer per-minute or unlimited?

Both. Per-minute pricing is best for low-volume use; unlimited bundles are best for call centers and high-volume outbound. We will model both on your actual call records.

Want a written migration plan?

Send us what you have today. We will reply with timeline, pricing, and risk register within 4 business hours.

Get a migration plan

or call 866-304-4300