Carrier-grade voice over IP. Geo-redundant, PBX-agnostic, IPv6-ready. Sub-second failover. 99.999% voice-core uptime SLA-backed.
SIP Trunking · Geo-redundant · Sub-second failover

Carrier-class voice.
Delivered over IP.

Copper is being retired. Traditional voice circuits are getting harder to provision, more expensive to maintain, and slower to repair when something breaks. Hybrid workforces need voice that follows the user, across offices, home, mobile, video. SIP is the bridge: carrier-grade voice over IP, integrated with the PBX you already have. CyberNet’s SIP is geo-redundant, PBX-agnostic, IPv6-ready, with sub-second failover.

What It Is

Software companies sell SIP.
Carriers engineer voice.

SIP Trunking is voice service delivered as a managed IP service to your existing PBX, on-prem or hosted. We engineer the voice path, operate the carrier-grade voice core, and integrate with the PBX configuration your team already runs.

Migrate off PRI/T1

Phased migration off legacy PRI on your timeline. Co-existence during transition. PBX configurations carry over with minimal disruption to user behavior.

Hybrid workforce voice

Voice that follows the user across offices, home, mobile, and video. SIP integration with the UC platform you already deploy, Teams, Webex, Zoom, on-prem PBX.

High-volume operations

Call centers, customer service operations, healthcare phone systems. Volume-priced trunking with the QoS posture and SLA support these operations require.

Common Deployments

Three SIP deployments,
to help you locate your own.

01 / PBX Replacement

Single-site SIP migration

Existing on-prem PBX integrated with SIP trunks. Cutover engineered for minimal disruption. Failover paths in place from day one.

For single-site operations migrating off PRI/T1.
02 / Multi-Site SIP

Centralized SIP for distributed sites

Centralized SIP trunking aggregating call traffic from many sites. Branch offices share the trunk pool. SLA-backed performance per call.

For multi-site enterprises with central PBX.
03 / High-Volume SIP

Call-center grade trunking

High-volume SIP trunking sized for call-center traffic. Concurrent call capacity, recording integration, queue management. Engineered for sustained throughput.

For call centers and high-volume voice operations.
Why CyberNet

A voice service
engineered by people who’ve been doing voice.

PBX-agnostic by design

SIP integrates with whatever PBX you’re running, on-prem traditional, hosted, hybrid, UCaaS. Tested across vendors. No required hardware replacement.

Geo-redundant voice core

Voice core engineered for 99.999% uptime with geo-redundant SBCs. Sub-second failover when a primary path fails. Documented in the SLA.

Quality visibility in Mission Control

Every trunk, every call, every quality metric, visible in Mission Control. MOS scores, call detail records, failover events all queryable.

Common questions

Common questions

Will SIP work with my existing PBX?

Yes. The service is PBX-agnostic by design.

What happens if a voice node fails?

A geo-redundant voice core takes over, with sub-second failover.

What uptime does voice carry?

A 99.999% voice-core uptime SLA, contractually penalized when missed.

How is CyberNet different from other carriers?

CyberNet is an engineering-led, licensed CLEC since 1995 that owns its network, 150,000+ on-net buildings and 700+ cell towers. You work directly with the engineers who design and run your service, with no level-1 layer between you and the person who can fix the problem.

What uptime does CyberNet commit to?

A 99.999% core-uptime SLA, contractually penalized when missed.

How quickly will I hear back?

Within one business day.

How do I check coverage at my address?

Submit your address through the technology configurator and we’ll check coverage at each site.

What is Mission Control?

Mission Control is the operations platform every CyberNet customer lives inside, five workspaces: Orders, Marketplace, Ops Center, Billing, and Helpdesk. See Mission Control.

SIP Build

Ready to migrate or modernize voice?
Start with the call profile.

Tell us your call volume, PBX environment, and migration timeline, and we’ll come back with a SIP architecture engineered to your existing setup. Response within one business day.