Connect your PBX, CRM,
numbers, and routing — managed.
Your phone system and CRM should work together, not in parallel. VoipTower connects 3CX, Asterisk, FreePBX, HubSpot, Pipedrive, Bitrix24, and custom systems to managed VoIP infrastructure with DID numbers, SIP trunking, and call routing. Integration is configured by engineering during onboarding — included with traffic, no separate setup fees, no partner kickbacks.
Your phone system and CRM should work together.
Most companies have both — a PBX for calls, a CRM for customer data. They just don't talk to each other. Sales calls don't show in pipeline. Support agents don't see the right record. Routing isn't linked to teams, campaigns, or workflows.
What goes wrong without integration
Missed call context. Manual call logging. Poor customer visibility. Unclear callback ownership. Calls routed to the wrong team. CRM records not connected to phone activity. PBX setup that doesn't match sales or support workflows. No clear connection between DID numbers, SIP trunking, and routing.
What VoipTower does instead
Connects voice infrastructure with the systems your team already uses. Aligns PBX, CRM, DID numbers, SIP trunking, and call routing so calls are easier to manage. No partner commissions from vendors. No forced platform switch. Integration is part of the service.
What is PBX & CRM integration?
PBX and CRM integration means connecting your business phone system with your customer management system. The PBX handles calls. The CRM stores customer, lead, sales, or support data. When they work together, your team manages calls with context — who's calling, why, and what should happen next.
In a VoIP setup, integration often combines with SIP trunking, DID numbers, and call routing. The full chain: DID number → SIP trunk → routing → PBX → CRM → support.
PBX integration
3CX, Asterisk, FreePBX, IP PBX, and most SIP-capable systems. Calls routed into extensions, queues, IVR menus, departments, business hours rules.
CRM phone integration
HubSpot, Pipedrive, Bitrix24, and custom CRM systems. Call history, customer records, sales activity, support tickets connected to live voice.
SIP trunking + PBX
SIP trunks register with your PBX, carry inbound and outbound calls, support failover. The bridge between DID numbers and your phone system.
DID number + CRM workflows
Each DID gets a clear purpose tied to a CRM workflow — sales, support, country, campaign, department.
How VoipTower delivers managed integration.
Integration is not a checkbox. It's configuration, testing, and ongoing changes — done by engineering, not handed over as docs.
PBX connection
SIP trunk registers with your PBX. Codec, transport, authentication, and failover configured to match your environment.
CRM-connected workflows
Calls connected to customer records, sales pipelines, support tickets, callback tasks, and campaign tracking — depending on your CRM and PBX integration options.
DID number routing
Each DID number gets a clear destination — sales queue, support team, country routing, campaign tracking, dispatch line.
Inbound and outbound routing
Routing logic on top of integration — by country, business hours, language, department, campaign, agent group, or failover destination.
International setup
Local DID numbers, country routing, multi-region SIP trunks, and CRM workflows aligned across markets.
Testing, launch, ongoing changes
End-to-end tests before launch. Onboarding within 24 hours. Routing and integration changes after launch — included with traffic.
PBX & CRM integration in real operations.
Different industries integrate differently. Call centers connect to queues and campaigns. Sales teams connect to pipelines. E-commerce to support workflows. Logistics to dispatch and driver records.
Integration for call centers
Inbound calls linked to customer records. Campaign numbers connected to CRM workflows. Routing by country, language, or team. DID numbers connected to queues. Call tracking by campaign or market. Callback routing.
VoIP for call centersIntegration for B2B sales
Outbound calls from CRM. Inbound callbacks to the right rep. Local DID numbers per market. Call tracking by campaign. Routing by country or sales region. SIP trunk to sales phone system. Visibility for managers and reps.
VoIP for sales teamsIntegration for e-commerce
Customer calls linked to support records. Routing by country or store. Order support lines. Returns and refund support. Local DID numbers for markets. Support routing by language. Backup routing during busy periods.
VoIP for e-commerceIntegration for logistics
Dispatch calls routed by region. Driver support lines. Customer callback numbers. Branch or warehouse routing. Emergency routing. Call records connected to customer or delivery context. Backup routing.
VoIP for logisticsHow an integrated call actually flows.
From a customer dial to your team answering — with full context — in five steps.
- The customer dials a DID number. Local German number, UK number, Canadian number — whichever makes them comfortable calling.
- The call enters VoipTower's managed routing. Routing rules apply — country, business hours, department, language, campaign, agent group.
- The SIP trunk delivers the call to your PBX. PBX picks up the call and routes it inside your business — extension, queue, IVR menu, department.
- The CRM workflow activates. Customer record is matched, history surfaced, deal context shown, support ticket auto-created if configured.
- Your team answers — with context. Agent sees who's calling, what's happening, and what should happen next. No "let me find your file" pause.
Supported systems.
VoipTower integrates with the systems most B2B teams already use. No forced platform replacement.
PBX systems
3CX — IP PBX with full SIP trunk support, queues, IVR, extensions.
Asterisk — open-source PBX, fully customizable, common in call centers.
FreePBX — Asterisk-based UI for simpler administration.
IP PBX — most SIP-capable systems with standard registration.
CRM systems
HubSpot — sales, marketing, and support workflows with call activity tracking.
Pipedrive — sales-first CRM with call-to-deal connection.
Bitrix24 — full business suite popular in EU and CIS markets.
Custom CRM — VoipTower works with what you have.
Dialer platforms
Outbound dialer integration via SIP trunk for B2B sales, call center campaigns, and outbound support operations.
Contact center platforms
Connections to dedicated contact center software where SIP trunking and DID-based routing replace traditional carrier setups.
Why integration from VoipTower.
Six reasons businesses choose managed integration instead of "here's a SIP credential, good luck with the PBX."
Better customer context
Calls connected to CRM workflows. Sales, support, and operations teams respond faster with full context.
Less manual work
No manual call logging. No searching for customer records after the call starts. Cleaner handling.
Better routing for teams
Integration plus routing — by country, number, team, department, campaign, business hours, or backup rules.
Use your existing systems
3CX, Asterisk, FreePBX, HubSpot, Pipedrive, Bitrix24, custom. We connect; we don't replace.
International teams supported
Multi-country DID numbers, SIP trunks, and routing aligned in one managed setup.
Changes after launch — included
Teams grow. Campaigns change. Countries are added. CRM workflows evolve. Routing and integration changes — included with traffic.
Integration across 25+ countries.
VoipTower delivers managed PBX and CRM integration across all priority markets:
🇩🇪 Germany
PBX integration with local German DIDs and CRM workflows.
Germany coverage🇬🇧 United Kingdom
UK DIDs and routing into 3CX, Asterisk, FreePBX, HubSpot, Pipedrive.
UK coverage🇫🇷 France
French DIDs connected to PBX queues and CRM-driven workflows.
France coverage🇨🇦 Canada
Canadian DIDs into IP PBX and CRM for cross-border B2B teams.
Canada coverage🇵🇱 Poland
Polish DIDs with Bitrix24, 3CX, and Asterisk integrations.
Poland coverage🇨🇿 Czech Republic
Czech DIDs and PBX/CRM connections for regional B2B operations.
Czech Republic coverage🇿🇦 South Africa
South African DIDs into PBX and CRM workflows.
South Africa coverage🇦🇷 Argentina
Argentine DIDs connected to CRM-aware call routing and PBX systems.
Argentina coverageFrequently asked questions about PBX & CRM integration.
Direct answers to common questions about phone system integration, CRM workflows, and VoIP infrastructure.
What is PBX and CRM integration for business VoIP?
How does PBX integration work with SIP trunking?
Can DID numbers be connected to a PBX and CRM?
How does CRM integration help with VoIP calls?
Do I need SIP trunking for PBX integration?
How does call routing work with PBX and CRM integration?
Can VoIP be integrated with my existing CRM?
Is PBX and CRM integration useful for call centers?
Is PBX and CRM integration useful for sales teams?
Can PBX and CRM integration support international calls?
What is the difference between VoIP integration and UCaaS?
Can VoipTower help if we already have a PBX?
Connect your PBX, CRM, and VoIP infrastructure.
Tell us what PBX and CRM you use, which countries you call, and how your calls should be routed. We'll connect — within 24 hours.