Skip to content
(816) 366-8848 Call Daz Communications Compare my options

SIP trunking for businesses in Kansas City, St. Joseph and nationwide.

SIP Trunking for Business

Keep the phone system you have. Replace the expensive lines behind it.

If your business runs its own phone system, on site or in your data center, SIP trunks replace the PRI circuits and copper lines that connect it to the outside world. You keep your numbers and your system, and usually pay less for more capacity. We compare SIP providers and handle the cutover.

  • Works with your current phone system
  • Your numbers moved for you
  • Free comparison, no obligation

Prefer to talk? Call (816) 366-8848 or send a text.

Compare SIP trunking for your phone system

Three quick steps. About a minute.

What do you need help with?

Pick all that apply.

Tell us about your location

Availability and pricing depend on your address.

How many locations?

When do you need this?

Where should we send your options?

An advisor follows up personally. No spam, ever.

Best way to reach you
Add a note (optional)

Free and no obligation. We never sell your information.

Request received.

Thanks. We usually respond within one business hour.

Want options even faster? Text a photo of a recent bill to (816) 366-8848.

Text a bill photo Call now

The short answer

What is SIP trunking?

SIP trunking connects a business phone system to the public phone network over an internet or private data connection instead of PRI circuits or copper lines. Each trunk carries calls as data, so you can add call capacity without new circuits, move numbers between sites and route calls elsewhere when a site goes down. It fits businesses that want to keep their own phone system, call center platform or Microsoft Teams Direct Routing setup.

Updated October 25, 2026 by the Daz Communications team

Replaces
PRI circuits and copper phone lines
Keeps
Your phone system and your numbers
Capacity
Add call paths without new circuits
Best for
On site phone systems, Teams Direct Routing, call centers

What we compare

Two SIP quotes with the same price per channel can be very different services.

  • Compatibility

    Certified or tested with your phone system or session border controller, so the cutover is not an experiment.

  • Pricing model

    Per channel, unlimited or metered calling, and what long distance, toll free and international cost.

  • Failover

    Calls rerouted to another site, a cell phone or a second carrier when your connection or system is down.

  • 911 and location

    Direct 911 dialing and a dispatchable location for every site and floor, as federal rules require.

  • The connection underneath

    Enough upload, quality of service and a backup path, or a private connection from the same provider.

  • Number porting

    Every number, including fax and alarm lines, moved on a schedule with no gap in service.

Compare SIP trunking for your phone system Free comparison. No obligation.

When SIP trunking makes sense

Your situation Good fit for SIP trunks? Why
Recent on site phone system on PRI or copper lines Yes Keep the system, cut the line costs, gain failover
Microsoft Teams with Direct Routing Yes SIP trunks are how Direct Routing connects to the phone network
Call center platform you run yourself Yes Add channels for busy seasons without new circuits
Old phone system that is out of support Maybe A cloud phone system may cost less than keeping it alive
Small office with a few lines Usually not A cloud phone system is simpler

Copper is going away

Many PRIs and business phone lines still run on copper. In January 2026, the FCC approved AT&T’s application to discontinue copper-based service at wire centers in 18 states, Missouri and Kansas among them, starting as early as November 2026, and AT&T plans to retire most of its copper outside California by the end of 2029. Moving to SIP on your own schedule beats moving on the phone company’s.

Get the details right

  • Connection. Each call needs steady upload bandwidth. Put voice on a connection with quality of service, or a private line from the SIP provider, and keep a backup. See dedicated internet access and backup internet.
  • 911. Federal rules require direct 911 dialing, an alert to someone on site and a dispatchable location for every site.
  • Alarm, fax and elevator lines. These often need a separate plan. See POTS line replacement.
  • Testing. Inbound, outbound, transfers, voicemail, fax, 911 and failover are tested before the old lines are canceled.

Sources

From options to installed, with one point of contact.

  1. Tell us what matters

    Share your locations, budget, current services and what isn't working. The form above or a short call is enough.

  2. Compare side by side

    We pull options from providers that actually serve your address and lay them out in plain English: speed, price, term and fine print.

  3. We handle the rest

    We coordinate ordering, installation and number transfers, then stay your point of contact after go-live.

SIP trunks compared with the lines they replace General comparison. Pricing and features vary by provider and term.
Item PRI circuit SIP trunks What it means
Call capacity 23 calls per circuit Any number of channels Pay for what you use
Adding capacity Order another circuit Change the channel count Days, not weeks
Outage handling Calls fail with the circuit Calls reroute automatically Fewer missed calls
Numbers Tied to the circuit location Can move between sites More flexibility
Connection Dedicated phone circuit Internet or private data line Upload speed matters

SIP trunking questions

Straight answers. If yours is not here, call or text us.

Do we have to replace our phone system to use SIP trunks?

No. That is the point of SIP trunking. If your phone system supports SIP, or with a session border controller in front of it, you keep the system and replace only the lines behind it.

Is SIP trunking reliable enough for a call center?

Yes, with the right setup: a connection with enough upload and quality of service, a backup path, and failover rules that send calls somewhere useful when a site goes down. Many contact centers run on SIP trunks.

What happens to our PRI when we switch?

We schedule the SIP trunks, move your numbers, test inbound and outbound calls and 911, then cancel the PRI after the cutover is confirmed, so there is no gap.

Can SIP trunks work with Microsoft Teams?

Yes. Teams Direct Routing uses SIP trunks connected through a certified session border controller. It is one of the main options we compare on our Teams Phone page.

Should we move to a cloud phone system instead?

Sometimes. If your phone system is old or out of support, a cloud phone system can cost less overall. If it is recent and working well, SIP trunks let you keep it. We will compare both honestly.

SIP trunking in Kansas City, St. Joseph and nationwide

We work with businesses across the Kansas City metro, St. Joseph and northwest Missouri, and with multi-site companies nationwide. Quotes, porting and cutovers are handled by phone and email, and we meet on site when it helps.

Daz Communications 2739 Mitchell Ave, Suite 205C Saint Joseph, MO 64507 (816) 366-8848 info@dazcomm.com
Based in St. Joseph and Kansas City, serving Missouri, Kansas and businesses nationwideSt. JosephKansas CityMissouri and KansasNationwide

Related services from Daz Communications

Keep your phone system. Cut the cost of the lines behind it.

Free comparison of SIP providers, with your numbers moved and 911 tested.

Compare SIP providers Or call (816) 366-8848, or text us

What you get

  • SIP providers tested with your phone system
  • Failover and 911 set up right
  • Your numbers moved with no gap
  • We stay involved after cutover
Call Text Get my comparison