VoIP
Vonage
Business communications and voice API provider used for hosted trunking alongside existing PBX estates or application-driven calling.

Capabilities
What we implement
- SIP trunk and PBX interconnection
- Number management and porting
- Voice API integration
- Redundant route configuration
Security
How it is hardened
- Authenticated trunk registration
- Encrypted signalling where supported
- Outbound destination restrictions
Architecture
Vonage voice integration
Hosted trunking or API voice connected to an existing PBX estate, with numbering and routing designed before migration.
01 · Provider
SIP trunkingNumbers & portingVoice APIsTrunk capacity and number inventory agreed against measured concurrency.
02 · Authentication
Registration or IP authEncrypted signallingCredential policyCredentials rotated on staff change and stored outside the PBX configuration exports.
03 · PBX
Trunk configurationInbound routingOutbound classesExisting dial plan preserved where it still matches how the business works.
04 · Controls
Destination limitsSpend alertsCall reportingOutbound restrictions enforced on the PBX and again at the carrier.
FAQ
Vonage questions we are asked
- Can we keep our PBX and change only the carrier?
- Yes. Carrier replacement is usually the lowest-risk change: trunks are built in parallel, tested, then traffic is moved route by route.
- How long does porting take?
- It depends on the losing carrier and country. The plan assumes weeks, not days, and keeps the old service live until the port completes.
- What about redundancy?
- A second carrier on a lower-priority route, tested by deliberately failing the primary rather than assuming it works.
Related
Other voip platforms
Vonage is referenced to describe engineering capability. All trademarks and product names are the property of their respective owners; no partnership or endorsement is implied.
Ready to scope the work?
Share your environment and objectives. You will get an engineering response covering scope, approach and considerations.