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SIP trunking that never drops a call.

Multiple carriers, automatic failover, and real-time channel monitoring. Your PBX stays connected to the outside world even when one carrier has a bad day.

  • Multi-carrier redundancy with automatic failover under 2 seconds
  • Local, long-distance, international numbers from a single trunk
  • Number porting handled with your current provider, no business interruption
  • Pay for channels you use, not per-seat licenses that scale with headcount
Home/ Services/ Voice & Communications/ Cloud SIP Trunk Services

SIP trunking without the single-carrier gamble, or the per-seat markup.

SIP trunking replaces old-school PRI and analog lines with internet-delivered voice channels. In theory, every provider sells the same thing. In practice, carriers go down, voice quality drifts, international rates vary by thousands of percent, and the "unlimited" plans you were quoted at signup turn out to have fair-use clauses that trigger on exactly the month you need them not to.

We design SIP trunk deployments the way large telecom teams do: multiple carriers running in parallel, with intelligent routing deciding on a per-call basis which trunk to use. If Bell goes down in your region, Rogers picks up the call before the ring finishes. If an international destination is five cents cheaper on Telus tonight, calls to that destination route through Telus automatically.

Platform-agnostic. We trunk into FreePBX, Asterisk, 3CX, Issabel, Vicidial, Twilio, MS Teams Phone, Zoom Phone, and legacy PBXs via SIP gateway. Your choice of carrier is independent of your choice of platform, and both are independent of your choice of hardware. No bundle, no lock-in.

What's included

Fourteen capabilities, engineered for continuity.

Every feature below is implemented, documented, and monitored during delivery. Nothing is left as "we'll turn that on later" or hidden behind an upgrade tier.

Trunk provisioning & connectivity

The core SIP service: channels, numbers, routing, and the physical connection into your PBX or calling platform.

SIP trunk provisioning
Business number connectivity
International SIP trunking
Local and geographic numbers
DID number integration
Inbound and outbound calling

Routing & redundancy

Multi-carrier failover, multi-location routing, and the intelligent logic that keeps calls connected when a carrier has a bad day.

Multi-location connectivity
SIP failover configuration
PBX integration
Intelligent call routing
Least-cost routing
Number porting assistance

Security & monitoring

SIP security hardening, capacity planning, and real-time trunk monitoring with alerts for anomalies before they become incidents.

SIP security configuration
Bandwidth and capacity planning
Real-time monitoring
Fraud detection and prevention
Troubleshooting and MOS scoring
Monthly usage reporting
Who it's for

Four kinds of businesses that need this.

These are the scenarios where multi-carrier SIP trunking pays for itself inside the first quarter. If none sound like your situation, say so and we'll tell you honestly whether SIP is the right starting point.

Carrier escape

You're trapped on an incumbent contract

Your current carrier has you on a multi-year commitment at rates that haven't been competitive since 2019, and the quote to add a new location is quietly obscene. Multi-carrier SIP breaks the dependency: you port numbers in phases, keep the old service running until the new trunks are verified, and your monthly bill drops by a meaningful fraction without a single dropped call.

Outage recovery

You've had a bad outage recently

An incumbent carrier went down for six hours last quarter and you lost deals during the window. Multi-carrier SIP with automatic failover means that scenario never happens again: the moment Carrier A stops answering health checks, Carrier B is already carrying the call. Your customers never notice.

Rapid growth

You're adding channels faster than you can plan

Your team doubled this year, call volume tripled, and your current trunk capacity is maxed out during business hours. SIP channels scale on demand: we add 50 channels this week, 100 next quarter, and you only pay for what you actually use. No more "we need to call the carrier to upgrade" lead times.

International operations

You call outside Canada regularly

Your sales team calls the US, your support team calls India, your logistics team calls Mexico. On a single-carrier contract, international rates are either flat (and expensive) or variable (and surprising). Multi-carrier SIP with least-cost routing picks the cheapest carrier per destination per call, and gives you a monthly report showing exactly where the savings came from.

What drives the quote

SIP pricing is simpler than carriers make it sound.

No per-seat licensing, no mystery add-ons. Your monthly cost is a function of four variables we scope together on the first call.

Concurrent channels

How many calls your business handles simultaneously at peak. Not users, not extensions, just concurrent calls.

Phone numbers (DIDs)

How many inbound numbers you need. Local, toll-free, or international. Porting from your current carrier is included.

Call destinations

Where your calls go. Canadian long-distance, US, international zones. Rates vary by destination; we show you the rate card.

Monthly minutes

Expected call volume. Metered, bundled, or unlimited depending on what makes sense for your profile. No fair-use surprises.

How we deliver

Four phases, zero business interruption.

The riskiest part of any SIP migration is the cutover. We design engagements so your old service runs in parallel with the new one until every number is verified working on both.

PHASE 01

Audit

Days 1-3

We review your current carrier contract, call volume, number inventory, and PBX configuration. Deliverable is a side-by-side cost and capability comparison, not a sales deck.

PHASE 02

Provision

Days 4-10

Carrier accounts set up, channels provisioned, DIDs allocated, PBX integration configured and tested. Your old service continues running untouched.

PHASE 03

Port

Days 11-18

Number porting executed in planned batches, typically grouped by department or location. Each batch verified working on new trunks before moving to the next.

PHASE 04

Monitor

Ongoing

Real-time monitoring with alerts for carrier anomalies, monthly usage reports, quarterly cost reviews. Standing team on 24/7 incident response.

Carriers & platforms

Any carrier, any PBX, any platform.

Carrier-agnostic by design. Platform-agnostic by design. If you already have a carrier you like, we work with them. If you want us to pick, we recommend based on your traffic profile.

Carriers we trunk with

Bell Canada Rogers Business Telus VoIP.ms Vonage Twilio Flowroute Bandwidth.com Thinktel Fibernetics

PBX & calling platforms

FreePBX Asterisk 3CX Issabel Vicidial MS Teams Phone Zoom Phone Avaya Cisco UC Custom gateway
Common questions

What buyers ask before they port.

Direct answers to the six questions we hear in nearly every SIP conversation.

How quickly can we get a SIP trunk live?
A new SIP trunk with no number porting can go live in 48 to 72 hours. If you need to port existing numbers from your current carrier, add one to three weeks for the port window, which is governed by the current carrier, not us. We time cutovers for off-hours and run old and new in parallel until the port is verified.
What happens when a carrier has an outage?
On a multi-carrier trunk with failover configured, outages are invisible to your users. Our monitoring health-checks each carrier every few seconds. When one stops responding, calls automatically route through the next available carrier in under two seconds. Users mid-call stay connected because the trunk itself hasn't dropped; new calls just use a different path.
Will number porting break anything?
If done carelessly, yes. If done correctly, no. We schedule porting in batches grouped by business function (not alphabetically) so if one batch has issues, your sales team or support team can keep working on the batch that already succeeded. The old carrier keeps delivering calls to ported numbers for up to 48 hours after cutover, giving us a verification window before you're committed.
Can we keep our current carrier for some numbers and switch others?
Yes, and this is often the right starting point. We can SIP trunk only your new numbers while leaving existing ones on your current carrier until contract renewal. Multi-carrier architecture is agnostic to which trunk any particular number lives on, and the migration can run over months or years rather than all at once.
How is pricing structured?
Monthly fees have two components. First, a flat trunk fee covering channel capacity and DID allocation. Second, call minutes which pass through at carrier rates with no markup. You see exactly what each carrier charges and exactly what you pay us. International calling is quoted per destination zone, and the rate card is yours to see before you sign.
What stops someone from committing SIP fraud on our trunk?
SIP fraud is a real risk, usually attempted via compromised extensions or weak passwords. We harden every trunk with IP restrictions, rate limits, destination allowlists, and anomaly detection that alerts the on-call engineer within minutes of unusual traffic. Most fraud attempts die in the first few seconds because the trunk refuses the outbound call before it leaves your network.
Start with a conversation

Tell us who your current carrier is.

Thirty minutes with a practitioner, not a sales rep. We'll compare your current contract against a multi-carrier SIP design and show you honestly what you'd save, what you'd gain in reliability, and what the switchover would cost.