Metaswitch Perimeta SBC Support

Whether you’re running Perimeta from its Microsoft era or through Alianza today, we provide the hands-on support your SBC needs.

Built for Metaswitch Operators

Expert Support for Complex Perimeta Deployments

With ECG, you get direct access to Perimeta experts who solve problems quickly and design for long-term success.

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Deployment That Matches Your Architecture

We support Perimeta in cloud, on-prem, and virtualized models to ensure it aligns with your SBC strategy, scaling with SIMPL deployments and SIMon.
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Advanced SIP & RTP Troubleshooting

From codec mismatches to one-way audio, we identify and resolve SIP and RTP issues fast and without the guesswork.

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Custom Rules, Filters, & Behavior Scripts

Need advanced session behavior? We help you implement custom message rules and manipulate SIP headers to fit your environment.

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Disaster Recovery & Business Continuity

We ensure your Perimeta SBCs are ready to reroute traffic and recover quickly in the event of outages or link failures.
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Integration with Other Metaswitch Components

We support the full stack – not just Perimeta – so your CFS, EAS, and SAS are aligned with SBC policies and operations.
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Hands-On Support From Real Experts

You won’t get canned responses. You’ll work with engineers who know Metaswitch inside and out and can act immediately.
Tough SBC Problems? We’ve Seen Them All

Eliminating the Roadblocks in Your Metaswitch Stack

You don’t need Tier 1 support; you need engineers who’ve solved Perimeta issues in production. That’s where we come in.

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Unexpected Call Failures

Intermittent SIP errors, failed registrations, or dropped calls? We dig into SIP traces and message rules to find the root cause fast.
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Slow or Risky Upgrades

Perimeta version upgrades shouldn’t feel like a gamble. We help you plan, test, and execute with minimal disruption.
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Geo-Redundancy That Doesn’t Work

Having multiple SBC nodes doesn’t guarantee uptime. We troubleshoot HA failover and ensure traffic still routes correctly under failure.
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SBC Security Gaps

From weak TLS configurations to missing ACLs, we close the holes that put your network and your customers at risk.
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Limited Visibility Into SBC Behavior

Not sure how Perimeta is handling sessions? We help interpret logs, metrics, and trace data so you can see what’s really happening.
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Delayed Response From Vendors

When you need answers now, we act. No waiting for ticket escalations – we solve problems directly and immediately.

OUR CLIENTS

Trusted by Industry Leaders

Join other organizations that enjoy expert engineering support with ECG.

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WHY CHOOSE ECG

Your Metaswitch Perimeta Experts

We’ve supported Perimeta deployments at scale, in production, and under pressure.

ECG has spent years working with Metaswitch Perimeta in demanding, multi-site environments, from Tier 2 carriers to national voice providers. We understand the nuances of message manipulation, geo-redundancy, security hardening, and SIP interop because we’ve handled those issues directly. Whether you’re planning an upgrade, troubleshooting RTP loss, or optimizing SBC throughput, our team brings real Perimeta experience – not guesswork.

Success Stories From Our Clients

ECG's broad scope of clients means they know what's happening before we do. We stay competitive with ECG as our guide.

Mark Hayes

VP of Voice Engineering | Momentum Telecom

I'm happy to say I've partnered with ECG at a number of service providers. You guys have been an outstanding engineering and operations partner for my teams.

Tom Faherty

VP | Databank

ECG is definitely the right team for our network!

Nicole Rodriguez

AVP Switching and Wireless Data Engineering | Centennial of Puerto Rico

ECG delivers exceptional quality and service via their software products and consulting services. Speaking as someone with direct large scale enterprise delivery with their team, my personal experience has been universally positive.

Joe Pfiefer

Assistant Director | U.S. Department of Justice

GET STARTED WITH ECG TODAY

Book Your 30-Minute Connect Call

Get in touch with ECG for products and services that support your crucial voice infrastructure needs. 

Experience the ECG Advantage

Whether you’re a service provider, enterprise, or government agency, your voice infrastructure is in good hands with ECG.

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Proven Expertise

Our team has decades of proven experience building and supporting voice networks.

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Powerful Partnerships

Our strategic alliances are designed to help deliver customer-centric, total solutions to our clients.

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Elevated Network Design

We draw from experience with dozens of service providers to create straightforward, manageable designs.

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Comprehensive Support

Our team will assist in your technical projects, support your goals, automate processes, and train your team.

How We Help

Solving Real Problems Inside Metaswitch Perimeta Systems

Whether you need integration, triage, or ongoing support, our team knows what works and what breaks.

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Perimeta Configuration and Optimization

We help you configure, customize, and fine-tune your Perimeta SBC for peak performance and long-term stability.

  • Build and validate security and routing policies to ensure your Perimeta SBC is configured for peak efficiency.
  • Tune routing logic, NAT handling, and codec selection for optimal call flows.
  • Align Perimeta configuration with SIP trunking, STIR/SHAKEN, and regulatory needs.

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Interoperability and Integration

Getting Perimeta to play nicely with the rest of your network isn’t always straightforward. We make it work.

  • Resolve interop issues with major vendors, like BroadWorks, Ribbon, Microsoft Teams, & more.
  • Normalize SIP headers and SDP behavior across carriers and PBXs.
  • Integrate Perimeta with analytics, policy servers, and cloud-based platforms.
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Troubleshooting and High Availability

When things break – or need to scale – we bring deep knowledge of Perimeta’s architecture and real-time behavior.

  • Trace SIP and RTP paths to identify media, registration, or routing issues.
  • Support geo-redundant deployments and HA failover configurations.
  • Perform emergency diagnostics and recovery in live production environments.
Frequently Asked Questions

Common Metaswitch Perimeta Questions, Answered

Get answers to the most common Metaswitch and Perimeta SBC questions from engineering and operations teams.

Perimeta is the Session Border Controller (SBC) component within the Metaswitch solution stack. It handles SIP signaling and media traffic at network edges, acting as a security gateway, protocol normalizer, and traffic controller. It’s often deployed alongside Metaswitch's CFS (Call Feature Server) and other core voice elements to support VoIP, IMS, and interconnection with other carriers or enterprise networks.

Metaswitch Perimeta uses a session-based licensing model, meaning licenses are allocated based on concurrent SIP sessions – typically one license per active call leg. Licenses can be grouped across HA pairs or geo-redundant nodes, depending on your deployment. Licensing includes optional modules like SIP header manipulation or IPv6 support, which can be enabled as needed.

Perimeta is built around a distributed control and data plane architecture, making it highly scalable and cloud-friendly. Compared to monolithic SBCs, Perimeta offers more flexibility in virtualized and containerized environments, and it's tightly integrated with the broader Metaswitch ecosystem.
Engineers often encounter issues with NAT traversal, RTP timeouts, SIP header mismatches, or policy logic bugs. Perimeta logs and trace tools (e.g., show diagnostics, trace call, and the Policy Editor) are essential for identifying whether problems lie in the policy rules, licensing, DNS resolution, or media path handling. ECG frequently supports clients with troubleshooting call setup failures, one-way audio, and HA failover behavior.
Yes – Perimeta can run in AWS, Azure, or other public cloud environments, and it supports both VM-based and container-based deployments. It can also be deployed in hybrid models where some components remain on-premise (e.g., media gateways or core routing) while others, like Perimeta control functions, are moved to the cloud. Proper configuration of security groups, NAT, and DNS is critical in these setups.
Perimeta’s Message Manipulation Framework (MMF) is a powerful tool for achieving SIP interoperability between mismatched systems. In real-world deployments, different vendors or carriers might use slightly different SIP header conventions, methods, or information elements. The MMF lets you inspect and modify SIP messages on the fly to “normalize” these differences.
Yes, the Perimeta SBC supports codec transcoding and provides flexible codec negotiation. Being a software-based, cloud-native SBC, Perimeta can perform media processing tasks that include transcoding between different audio codecs when necessary.
Microsoft Teams Direct Routing allows organizations (or service providers) to connect Microsoft’s cloud PBX (Teams) to the PSTN via an SBC. Perimeta SBC is certified for Direct Routing, meaning it has been tested to work with Teams. Following the standard configuration with Microsoft, Perimeta can be a gateway to any voice service provider platform – such as CFS, BroadWorks, or NetSapiens.
To configure a SIP trunk on a Perimeta SBC, you need to establish the SBC as the intermediary between your internal network (e.g., a PBX or softswitch) and the service provider’s SIP trunk. This involves setting up signaling adjacencies and media realms on the SBC for each side, and defining routing policies. 

Ready to Experience the ECG Difference?

Get in touch for products that support your crucial voice infrastructure needs.