Still running PRIs
Your carrier is charging legacy prices and the hardware may be out of support. Moving to SIP can make sense—but only when the PBX, SBC, and network are ready.
Independent voice infrastructure consulting
We design voice networks. Most people selling trunks can’t.
Carriers sell a circuit and leave the hard part to you—the session border controller, bandwidth, QoS, porting, and cutover. We do that part, then find the carrier that fits.
CCIE / CCNP collaboration expertiseAWS architectureIndependent carrier guidance
Engineering beyond the circuit
What most providers won’t do for you
A carrier’s job ends when the circuit lights up. Ours ends when calls are clean, the old system is off, and your team can operate the new environment.
- Session border controller configurationRibbon, AudioCodes, Cisco CUBE, and Oracle. SIP profiles, transcoding, topology hiding, and failover.
- Bandwidth and QoS designConcurrent call sizing, codec selection, DSCP marking end to end, and WAN-edge policy review.
- Number porting coordinationLOA preparation, CSR validation, port-out issue resolution, and scheduled cutover windows.
- Carrier selection without a house brandMultiple providers compared side by side, with the technical and commercial tradeoffs documented.
- Cutover and post-install supportLive migration assistance, routing validation, failover testing, and issue triage after launch.
Start with the situation
Which of these is you?
Most voice decisions start with one of four situations. We’ll help define the realistic options, including the option to stay where you are.
Contract ends within six months
This is the time to review rates, redundancy, porting risk, and architecture before an auto-renewal takes away your leverage.
Moving to Teams or another cloud platform
The platform is only one decision. Direct Routing, session border controllers, emergency calling, and number migration need their own plan.
Building or replacing a contact center
Amazon Connect and CCaaS platforms have different economics and integration requirements. The right path depends on your agents, workflows, and call flows.
A complete voice strategy
Three ways to work together
Carrier sourcing is only one part of the job. The harder part is making the environment work reliably before, during, and after migration.
Selection and procurement
Requirements, multi-carrier quoting, rate comparison, contract review, and order management through installation.
Design and implementation
Readiness assessment, voice network design, SBC build, QoS policy, testing, and cutover execution.
Ongoing support
Moves, adds, changes, call-quality investigation, and carrier escalation when your team needs experienced help.
Migration runbook
How a voice migration actually runs
Every engagement follows an ordered sequence. You’ll know what is complete, what is at risk, and what comes next.
- 01Discovery
Current bills, circuit inventory, PBX or UC platform, DID count, concurrent call peaks, and contract dates.
- 02Readiness assessment
Bandwidth headroom, WAN topology, firewall and NAT behavior, SBC requirements, and known risks.
- 03Carrier selection
Qualified provider options compared against your current environment, with the tradeoffs written down.
- 04Design and build
SBC configuration, trunk provisioning, dial plan, QoS policy, failover paths, and emergency calling.
- 05Porting
LOAs, CSRs, migration sequencing, confirmed dates, and a rollback plan.
- 06Cutover
A scheduled window, acceptance tests, a bridge plan, and live engineering support.
- 07Stabilization
Call-quality monitoring and resolution of issues discovered after production traffic begins.
Independent by design
The network comes before the carrier.
siptrunks.net is an independent voice infrastructure practice. We design the technical environment first, then help compare the carriers, UCaaS platforms, Teams voice options, or contact-center systems that fit it.
That means looking across the carrier, LAN/WAN, firewall, PBX, SBC, endpoint, emergency-calling, security, and application layers—not treating each one as somebody else’s problem.
Talk to an engineer
Tell us what you’re working with.
The more context you share, the more useful the first conversation can be. You don’t need a finished RFP—start with what is changing.