SIP Trunk AI Voice Agents — Bring Your Own Carrier, Keep Your Infrastructure | PulsyAI
Connect your SIP trunk to AI voice agents with PulsyAI. Static IP, Registration, or Registrar mode. Keep your numbers, keep your carrier, keep your rates — run AI voice over your SIP trunk and deploy an AI receptionist over SIP without replacing anything. BYOC. 3 SIP modes. Number import. IVR and DTMF. White-label included. SOC 2 Type II. GDPR Ready. HIPAA Ready. 99.9% Uptime SLA. Encrypted in transit and at rest.
How SIP Trunk Works with PulsyAI
From your carrier to AI resolution — one clean call path over the telephony you already run. Your Carrier or PBX connects through a SIP Trunk Connection using Static IP, Registration, or Registrar — whichever mode your gateway requires. The call enters the PulsyAI AI Engine which includes LLM, TTS, STT, and IVR — the full voice AI stack in real time. The AI Voice Agent handles the call for receptionist, booking, lead qualification, or outbound — answered instantly 24/7. The call resolves through either a warm handoff transfer to human using Dial or SIP REFER into your existing agent queues, or an automated call completion with booking confirmed, lead qualified, and SMS and email follow-up sent.
Enterprise-Grade SIP Trunk Configuration
Not a workaround. Real SIP trunking for AI calling — enterprise-grade telephony integration with the carrier infrastructure you already pay for.
BYOC — Bring Your Own Carrier
PulsyAI is the bring-your-own-carrier AI platform: keep your existing carrier contracts, billing, and SLAs while BYOC voice AI connects to your provider — no forced migration, no new telephony vendor, no middleman markup. Your rates, your infrastructure, your control.
Three SIP Connection Modes
Static IP: Add your SIP gateway by domain or IP address for fixed setups. Registration: Dynamic authentication with name, gateway, username, and password. Registrar/SIP Client: Connect as a SIP client to your hosted PBX or cloud provider. Each mode supports both inbound destination forwarding and outbound gateway configuration.
Import Your Existing Numbers
Import phone numbers to the AI platform from Twilio, Telnyx, or your own SIP carrier and assign them directly to AI assistants. Your clients keep the numbers they already publish and advertise. Full number continuity.
Inbound and Outbound Support
SIP trunk supports both directions natively. Route inbound calls to AI agents and place outbound AI calls over your SIP trunk through your existing carrier. Not inbound-only — full bidirectional SIP.
Enterprise-Grade Transfers
Transfer live calls the way your PBX expects — full interoperability with existing call routing, IVR trees, and agent queues. Choose your transfer strategy per trunk: Dial is the default for new SIP trunks, Refer uses SIP REFER for direct media renegotiation. Provider routing changes take a few minutes to apply. Not just call completion — real PBX AI integration with SIP REFER AI transfer support.
Multi-Trunk Management
PulsyAI is a multi-trunk AI voice platform — manage multiple SIP trunks from one configuration panel. Different carriers for different clients, regions, or use cases, all from a single dashboard. Ideal for resellers and multi-client deployments.
Provider Routing and Gateway
Configure your provider routing with inbound destination forwarding — route all inbound calls to PulsyAI's SIP destination automatically. Set up your outbound gateway with A record support for explicit gateway configuration. Full control over how calls enter and leave the platform.
SIP Trunk Management Panel
View and manage all your configured SIP trunks from a dedicated panel. See trunk name, gateway domain or IP, connection type (Static IP, Registrar), transfer strategy (Dial, Refer), and status — all in one place. Add, edit, or delete trunks without support tickets.
How to Connect Your SIP Trunk to PulsyAI
Five steps from carrier credentials to live AI voice agents — self-serve, no support tickets, no professional services.
Step 1 — Configure Provider Routing
Forward all inbound calls to PulsyAI's SIP destination endpoint. Add the SIP gateway using the domain or IP address your provider requires.
Step 2 — Add Your SIP Trunk Credentials
Choose your trunk type — Static IP or Registrar. Enter your trunk name, gateway address, and authentication details if using Registrar mode.
Step 3 — Set Your Outbound Gateway
Add your outbound SIP gateway domain or IP with A record support. This controls how AI agents make outbound calls through your carrier.
Step 4 — Choose Transfer Strategy
Select Dial (default) or Refer per trunk. Dial initiates new calls for transfers. Refer uses SIP REFER for PBX-native transfer handling.
Step 5 — Test and Go Live
Provider routing changes take a few minutes to apply. Once active, your AI agents handle calls through your SIP trunk immediately.
Built-In IVR with DTMF Keypad Input
Your callers interact with AI agents using their keypad — no custom telephony logic required. PulsyAI includes native IVR with DTMF tone recognition — IVR DTMF AI voice built directly into the platform. Callers press keys to navigate menus, route to departments, confirm appointments, enter account numbers, and interact with AI agents — all over your SIP trunk. No additional telephony layer, no third-party IVR vendor, no custom build. Menu navigation: Press 1 for sales, 2 for support — standard IVR menus. Keypad input collection: Account numbers and confirmations entered by keypress. SIP-native: Works natively over your SIP trunk connection. Hybrid calls: Combine AI conversation with DTMF input in the same call. Zero extra vendors: No additional telephony layer or IVR vendor needed.
Who Connects via SIP Trunk?
VOIP Providers
You already own the telephony stack. Connect PulsyAI via SIP, white-label the platform, and sell AI voice agents to your existing client base. No infrastructure changes needed.
MSPs and Telecom Resellers
Your clients already use your voice service. Add AI agents as an upsell — receptionist, booking, lead qualification — all running on your SIP trunk under your brand.
Enterprise IT
You run an on-premise or cloud PBX. Connect PulsyAI to handle overflow, after-hours, and automated call flows without replacing your existing telephony investment.
Contact Centers
Augment your contact center with AI agents that handle Tier 1 calls, qualify leads, and book appointments — connected directly to your existing SIP infrastructure.
SIP Trunk Plus White-Label Plus Multi-Tier — Only on PulsyAI
No other platform combines SIP trunk integration with full white-label and multi-tier reselling. PulsyAI is the only SIP trunk white label platform where you can connect your own SIP trunk, white-label the entire platform under your brand, AND resell to partners who each get their own dedicated instance with their own SIP trunk, domain, and Stripe billing. It is the complete package for telecom channel programs. Your SIP Trunk: Connect your carrier. Your rates, your numbers, your infrastructure. Your White-Label: Your domain, logo, colors. Clients never see PulsyAI. From $99 per month. Your Partner Network: Each partner gets their own dedicated instance with their own SIP trunk. Enterprise plan with custom pricing.
No SIP Trunk? No Problem.
Managed vs SIP trunk telephony — you choose. Use PulsyAI's managed telephony with Twilio or Telnyx, buy numbers directly in the platform, and start calling in minutes. You can always migrate to your own SIP trunk later. Important: Numbers purchased inside PulsyAI are inbound-only. Outbound calling requires imported Twilio, Telnyx, or SIP numbers.
Trusted by Teams Worldwide
Real results from real customers running PulsyAI in production. FonePBX is a telecom provider whose clients get modern telecom infrastructure combined with an intelligent AI receptionist. Bellamy Stratton Group is a recruitment agency that saves close to 2 hours per day automating sourcing and pre-screening with PulsyAI. Bureau de Crédit uses PulsyAI to answer every call professionally, collect necessary information, and schedule consultations. Ring-Ring VA uses PulsyAI AI to handle routine inbound questions just as well as their team. Contencia uses PulsyAI to handle initial debt collection calls professionally and in full compliance, saving 15-20 hours per week. GuineaSea has not missed a single opportunity since using PulsyAI. BlackSea Worldwide transformed their ROI with PulsyAI's speed-to-lead solution. CallGenius reports that the Quebec French accent is flawless and callers cannot tell they are speaking with AI. Aisha Keita increased her booking rate significantly with PulsyAI acting like a full-time assistant 24/7. Real results from real customers running PulsyAI in production.
SIP Trunk FAQ
What SIP trunk modes does PulsyAI support?
Three modes: Static IP trunking for fixed gateway setups, Registration trunking for dynamic authentication, and Registrar/SIP client mode for hosted PBX environments.
Can I bring my own carrier (BYOC)?
Yes. Keep your existing carrier contracts, billing, and SLAs. PulsyAI connects to your provider with zero forced migration. Your rates, your infrastructure.
Can I import my existing phone numbers?
Yes. Import numbers from Twilio, Telnyx, or your own SIP carrier and assign them to AI assistants. Your clients keep the numbers they already publish.
Does SIP trunk support both inbound and outbound?
Yes. Full bidirectional SIP — route inbound calls to AI agents and make outbound AI calls through your existing carrier. Not inbound-only.
What transfer strategies are supported?
Dial and SIP REFER. Transfer live calls the way your PBX expects — full interoperability with existing call routing and agent queues.
How do I configure provider routing for SIP trunk?
In PulsyAI's SIP Configuration panel, set your inbound destination to forward all calls to PulsyAI's SIP endpoint. For outbound, add your SIP gateway by domain or IP address. Provider routing changes take a few minutes to apply.
What is the difference between Dial and Refer transfer strategies?
Dial is the default — PulsyAI initiates a new call to the transfer target. Refer uses SIP REFER to redirect the call at the SIP level, allowing direct media renegotiation between the caller and transfer target. Choose per trunk based on your PBX requirements.
Does PulsyAI support outbound gateway with A record?
Yes. Add your outbound SIP gateway by domain or IP address with A record support. This is only valid for the outbound gateway and gives you explicit control over outbound call routing.
Does PulsyAI support IVR and DTMF?
Yes. Built-in IVR with DTMF keypad input collection. Callers navigate menus, confirm information, and enter account numbers by pressing keys — all over your SIP trunk.
Can I manage multiple SIP trunks?
Yes. Manage multiple trunks from one panel — different carriers for different clients, regions, or use cases.
Can I combine SIP trunk with white-label?
Yes. PulsyAI is the only platform where you connect your own SIP trunk AND white-label the entire platform under your brand. Your carrier, your brand, your pricing.
Can my partners each have their own SIP trunk?
Yes. With Multi-Tier White-Label on the Enterprise plan, each partner gets their own dedicated instance and can configure their own SIP trunk independently.
What if I don't have a SIP trunk?
Use PulsyAI's managed telephony with Twilio or Telnyx. Buy numbers in the platform and start calling immediately. Migrate to your own SIP trunk anytime.
Connect Your SIP Trunk. Launch AI Voice Today.
BYOC. White-label. Multi-tier. The only SIP-ready AI voice platform built for telecom. Contact sales or see all features. 3 SIP modes. BYOC. IVR and DTMF. White-label included. Multi-tier available. PulsyAI is a trademark of PulsyAI. Twilio, Telnyx, and all other company and product names mentioned on this page are trademarks or registered trademarks of their respective owners. Their mention does not imply any affiliation with or endorsement by them.