Deciding to switch is the hard part; the switch itself is mostly choreography. This guide covers the parts specific to leaving Vonage, then the universal order that keeps any provider change boring. For the side-by-side numbers first, see Cannon VoIP vs. Vonage.
What leaving Vonage involves
Vonage's advertised rates are promotional and tied to annual terms, so confirm your term end, the notice window, and any early termination fee before scheduling. Add-on subscriptions (recording, queues) cancel with the account.
If you rented phones, they go back; owned standard SIP phones mostly carry over. Pull invoices showing the regulatory/E911 fee lines: they make the before-and-after comparison satisfying.
The safe switching order (same for everyone)
- Inventory every number you own, including fax, toll-free, and forgotten tracking numbers. Unported numbers die with the old account.
- Pull a current bill or customer service record; porting paperwork must match it exactly.
- Export everything you want to keep: recordings, voicemails, contacts, reports.
- Get the new system fully built and tested before any port date. Ours ships preconfigured and we run the cutover with you.
- Cancel the old service only after every number has ported. Never first.
What the move to Cannon VoIP looks like
Numbers port for $15 per line; most move the next business day with about two minutes of downtime, and scheduled multi-line ports get a firm date. About 85% of standard SIP desk phones carry over as-is; anything new ships preconfigured overnight from our office next to DFW Airport. Service is $34 per extension, month to month, with texting, transcription, queues, and CRM integrations included, so the feature mapping usually ends with a shorter bill and a longer feature list. The whole vendor-neutral version of this process lives in our switching checklist.
The technical side of the cutover
Rented handsets return to Vonage; owned standard SIP models mostly reprovision after a factory reset. Check each model against our list, and export recordings while the account is live.
Phones and provisioning. The short version: we handle it. New Cannon Certified phones ship preconfigured and set themselves up the moment they're plugged in, which is the path we recommend, because it's the one with zero surprises on cutover day. If you'd rather keep compatible phones you already own, we support that too: our team wipes the old provider's settings and loads ours during onboarding, so nobody at your office is digging through phone menus or provisioning servers.
Network. Two settings decide most call-quality outcomes on day one: disable SIP ALG on the router (the classic cause of one-way audio), and confirm QoS prioritizes voice. If desk phones are PoE-powered, sanity-check the switch's power budget before adding units. Our plug-and-play appliance ($148) handles the network side automatically and gives our support team a secure path in for troubleshooting.
Numbers, texting, and caller ID. Porting moves the numbers; three registrations move with them. E911 dispatchable addresses are registered per extension during setup (the law requires it). Business texting re-registers under 10DLC when numbers change carriers, which we handle, but plan for a short texting settling period on port day. And CNAM plus attestation re-establish on our side, where every call signs at full attestation; if callers ever saw "Spam Likely" on your old service, this is typically where that ends.
Call flows and integrations. Menus, queues, schedules, and voicemail boxes are rebuilt on our side during onboarding, from your existing flow or an improved one, and greetings auto-record (custom human-recorded audio should be exported with everything else). CRM integrations reconnect with a fresh OAuth sign-in per platform, and fax moves to T.38 or cloud eFax rather than hoping analog tones survive.
Contract terms change and yours may differ: treat your actual agreement as the source of truth, and bring it to us if you want a second pair of eyes on the exit math, including when the honest answer is to ride out your term first.
Ready to leave Vonage?
Bring your bill and your term date; we'll map the exit honestly and handle the port.
Plan my switch