Voice infrastructure
built around real call flows.
A call center routes calls differently from a logistics dispatcher. A B2B sales team uses local numbers differently from an e-commerce support desk. VoipTower configures DID numbers, SIP trunking, call routing, and PBX/CRM integration around your industry — not a template.
Four industries we know in detail
Each industry page covers the typical setup, common problems, and the routing pattern that actually works in daily operations.
International Call Centers
SIP trunking, DID numbers by country and campaign, queue routing, PBX integration, failover paths for inbound and outbound traffic.
VoIP for Call Centers →B2B Sales Teams
Outbound calls with local caller ID, callback routing to the right SDR or AE, CRM-connected workflows for SaaS and outsourcing teams.
VoIP for B2B Sales →E-commerce Companies
Local support numbers, order and delivery routing, returns and refund flows, helpdesk-connected workflows for online stores and marketplaces.
VoIP for E-commerce →Logistics & Dispatch
Dispatch lines, driver support routing, branch and warehouse numbers, failover for time-sensitive operational calls.
VoIP for Logistics →The same five services. Configured per industry.
Every industry uses the same VoipTower service catalog. The difference is how those services are wired together for your call flow.
DID Numbers
Local, national, mobile, toll-free across 25+ countries.
Learn more →SIP Trunking
Inbound and outbound SIP connectivity for any PBX or dialer.
Learn more →VoIP Call Routing
Country, team, campaign, business-hours, failover routing.
Learn more →PBX & CRM Integration
3CX, Asterisk, FreePBX, HubSpot, Pipedrive, Bitrix24, custom.
Learn more →Business Telephony
End-to-end managed setup — DID, SIP, routing, integration, onboarding, support.
Learn more →Tell us what you're building.
Call center, sales team, e-commerce, logistics — or something else. Share the call flow you need, we'll review and propose a setup within 24 hours.