Your call center platform is already running. What you need is reliable, scalable voice connectivity and a provider that can grow with you.
Hosted SIP trunking is a cloud-based voice connectivity service that replaces traditional phone lines with internet-based connections, letting your call center send and receive calls through your existing infrastructure. We manage the underlying network for you.
With MMDSmart, your system connects to a hosted SIP trunk capable of handling your inbound and outbound voice traffic at whatever volume your operation requires.
SIP trunking for call centers differs from off-the-shelf call center software. It provides the connectivity layer your custom-built platform needs to place and receive calls, while leaving the rest of your architecture exactly as you designed it.
-
-Route inbound and outbound calls through hosted SIP channels
-Connect to any SIP-compatible PBX, dialer, or custom call center system
Connect it to hosted SIP trunking that can grow with you
What is SIP trunking for call centers?
SIP trunking for call centers is a cloud-based service that replaces physical phone lines with internet-based voice connections. It provides the connectivity layer your call center system needs to place and receive calls without requiring on-premise telecom hardware.
Do I need to replace my existing call center software to use SIP trunking?
No. Hosted SIP trunking connects to any SIP-compatible system, including custom-built dialers, PBX platforms, and proprietary call center infrastructure. Your existing architecture stays in place.
How many concurrent calls can a SIP trunk handle?
With hosted SIP trunking, the number of concurrent call channels scales dynamically based on your active volume. You can provision additional capacity on demand rather than pre-purchasing a fixed number of lines.
What is the difference between hosted SIP trunking and a traditional PRI line?
A PRI line is a physical circuit with a fixed number of channels that requires on-site hardware and long provisioning lead times. Hosted SIP trunking is a virtual connection delivered over your existing internet infrastructure, with flexible capacity and no hardware to manage.
Can SIP trunking support international call centers?
Yes. With MMDSmart, you can provision local DID numbers in multiple countries and route inbound calls to your existing system, so customers reach a local number while your team handles calls from one platform.
Is call recording available with hosted SIP trunking?
Yes. Call recording is available as an add-on to your SIP trunking connection through MMDSmart. You can enable recording on existing calls without changes to your core call center infrastructure.
What uptime can I expect from hosted SIP trunking?
MMDSmart maintains 99.999% uptime reliability. Voice connectivity is infrastructure, and infrastructure availability is treated as non-negotiable.
How quickly can I get SIP trunking set up?
Because MMDSmart is a hosted service, there is no hardware to install. Once your configuration is confirmed, you can begin routing calls through your existing system in a matter of days rather than weeks.
Hosted SIP trunking is a cloud-based voice connectivity service that connects a business’s existing call center infrastructure to the public telephone network over the internet, replacing physical phone lines with virtual channels that scale dynamically with call volume. Unlike full call center software suites, a hosted SIP trunking service provides the connectivity layer only — leaving the customer’s own platform, routing logic, and agent tools intact.
| Capability | What it does | Applies to |
| Hosted SIP Connectivity | Routes inbound and outbound voice calls through virtual channels over internet infrastructure, replacing physical phone lines | Any SIP-compatible PBX, dialer, or custom call center platform |
| DID Number Provisioning | Allocates local and international Direct Inward Dialing (DID) numbers on demand, without waiting on traditional telecom provisioning | Inbound call routing, multi-market call centers |
| Real-Time Call Detail Records | Generates per-call data including duration, origination, and volume, accessible via dashboard or API | Call analytics, operational reporting, CRM integration |
| Dynamic Channel Scaling | Adjusts the number of concurrent call channels based on active volume, without pre-purchased fixed-line capacity | High-volume outbound campaigns, variable-demand contact centers |
| Call Recording | Records inbound and outbound calls for compliance, quality assurance, and post-call review | Any SIP trunking connection |
| AI Sentiment Analysis | Applies AI analysis to call recordings to classify call outcomes, detect escalation patterns, and surface agent coaching signals | Post-call review, quality assurance, workforce management |
| API Integration | Custom call center platforms, operational reporting systems |
