the flat-rate, white-labeled cloud SBC for MSPs

Zero-touch voice infrastructure, at a flat rate, under your brand.

VoipFlow is multi-tenant cloud infrastructure orchestration software for Microsoft Teams and Zoom Phone voice. Certificates renew themselves, SIP ALG stops mattering, and your clients never see our name.

the three ways voice breaks

You know these tickets. So do we.

WARN · DAY 89

The 90-day renewal trap

Every tenant certificate expires every 90 days. Miss one renewal and the entire office voice system goes dark at 3:00 AM — with an SLA breach in the morning.

WARN cert expires in 1 day (tenant: acme)
FAIL manual renewal not scheduled — 5 tenants pending
FAIL · T+32s

Calls drop at exactly 32 seconds

Home-router SIP ALG rewrites the signaling. The ACK never arrives, Timer H expires at 32s (64×T1, RFC 3261), and the SBC tears the call down. Every time.

INVITE → 200 OK → ACK …
ACK mangled by ALG — Timer H expiry: 32.0s
BYE ← call dropped
TAX · $2/SEAT

The per-seat voice tax

Incumbents charge $2/user/mo and start at a $1,000/mo minimum. On small accounts that per-seat tax eats roughly 40% of your margin before you invoice anyone.

$2.00 × 200 seats = $400/mo — gone
incumbent floor: $1,000/mo minimum
flat alternative: $399/mo total

the mechanism

Three steps. Then it's quiet.

Onboard a tenant partition

Each client gets an isolated tenant partition — unlimited on every plan — under your brand, not ours. L2 technicians are productive in about 15 minutes.

Point your carrier at it (BYOC)

Your customer brings their own licensed carrier. VoipFlow is the software orchestration layer — we are not a carrier and we don't route PSTN minutes.

Certificates and ALG, handled

Let's Encrypt wildcard certificates issue, renew, and bind themselves in about 12 seconds. Signaling runs on port 5062, bypassing residential SIP ALG rewriting entirely. Proxy-media fallback is budgeted for 20% of traffic.

See how it works in depth

flat-rate pricing

Stop paying the per-seat voice tax.

$399/mo for 50 concurrent sessions (~500 seats). $799/mo for 150 concurrent sessions (~1,500 seats) with HA failover and HIPAA BAA. No minimums, no per-seat math, no "Contact us for pricing."

$400/mo back on a 200-seat deployment — that's the per-seat tax you stop paying, every month, on one client.

See flat pricing

margin math — 200-seat client
per-seat: 200 seats × $2.00/user/mo
= $400/mo of your margin, gone
voipflow: flat $399/mo, 50–150 concurrent
= $400/mo back on this client alone

free tools — the trust engine

No forms. No sales follow-up.

Three working tools, zero signup. They exist because we'd rather earn the 2:00 AM ticket than chase it.

free tool

SIP ALG Port Scanner

Scans a remote worker's router for SIP ALG interference from our edge — the same probe we run in production.

PS>
Invoke-VoipFlowALGScan -Target 'remote-worker-ip'
NO SIGNUPNO FORMSNO SALES FOLLOW-UP

Open tool

free tool

pcap-to-ladder

Drag a Wireshark capture stream in, get a color-coded SIP ladder diagram out. Isolates 32-second drops in seconds.

PS>
Invoke-VoipFlowLadder -Pcap .\capture.pcapng
NO SIGNUPNO FORMSNO SALES FOLLOW-UP

Open tool

free tool

Let's Encrypt Auto-Formatter

Formats and bundles ACME certificates for legacy SBC import — anynode, AudioCodes, Ribbon.

PS>
Invoke-VoipFlowFormat -CertDir .\acme\
NO SIGNUPNO FORMSNO SALES FOLLOW-UP

Open tool

compliance & security

Factual list. No badge theater.

  • Kari's Law notifications and RAY BAUM'S PIDF-LO pass-through — supported; emergency call delivery stays with your carrier
  • TLS 1.2+ and SRTP on every signaling and media path
  • EU data pinning for EU-tenant workloads
  • IP ACLs and toll-fraud controls on every tenant partition
  • HA failover on Growth — 150 concurrent sessions

Read the trust page

edge nodes — latency per region5 NODES OK
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