Recent Wins: Solved complex SIP/RTP routing errors | Ensured 100% A2P SMS compliance | Advanced custom device provisioning
Adrian Cunanan
B2B Tech Support & Escalations

VoIP Technical Support Engineer &
UCaaS Specialist

I help enterprise clients maintain seamless communication by configuring complex VoIP systems, troubleshooting SIP/RTP networks, and handling intricate Custom Device Configurations.

VoIP Service Pricing

Simple pricing to start quickly. You can choose one-time troubleshooting or weekly technical coverage.

One-Time

SIP Incident Fix

$149 one-time

  • One focused issue review (call quality or routing)
  • Root-cause notes and practical next steps
  • Fast turnaround support window
Request Incident Help

Most Chosen

VoIP Stability Sprint

$349 per week

  • SIP/RTP troubleshooting and escalation handling
  • Provisioning and UCaaS operations support
  • Weekly issue summary and action priorities
Book Stability Sprint

Project-Based

A2P Compliance Setup

$249 one-time

  • A2P 10DLC registration review
  • Delivery-block troubleshooting support
  • Compliance-focused recommendations
Request Compliance Help

Common Ticket Resolutions

As a hands-on Technical Support Engineer, my primary focus is fixing real-time client issues. Here are the core technical tickets I resolve daily.

Call Quality Triage

Diagnosing one-way audio, jitter, latency, and dropped calls by analyzing SIP traces, RTP streams, and QoS network settings.

High-Level Skill

Custom Device Provisioning

Guiding B2B clients through complex manual, zero-touch, and custom SIP settings for hardphones (Yealink, Polycom, Cisco) and softphones (3CX, Zoiper).

SMS Compliance & Routing

Assisting enterprise accounts with TCR (The Campaign Registry) requirements to resolve A2P SMS carrier blocks.

My Daily Execution Stack

  • Network Diagnostics: Reading SIP traces, analyzing RTP streams, monitoring QoS, and fixing jitter/latency.
  • UCaaS Administration: Configuring IVR, Call Queues, and PBX architecture.
  • Device Provisioning: Complex manual & auto-provisioning for Yealink, Polycom, 3CX, & Zoiper.
  • Compliance: Handling TCR registrations and A2P 10DLC regulations.
  • B2B Escalations: Managing high-level carrier issues and ticket flow.

I Solve The Technical Problems.
You Scale The Business.

As a Technical Support Engineer, I don't just read off a script. I dive into the backend, read the network traces, and find the root cause of communication failures.

Whether it's deploying a new PBX setup for an enterprise client or untangling complex A2P SMS compliance blocks,

I handle the technical heavy lifting so your clients stay connected.

Expert Custom Provisioning RingCentral / Dialpad 3CX PBX System SIP/RTP Diagnostics Yealink / Polycom Configs

Systems & Architecture Stack

I don't just troubleshoot systems; I build the workflows, integrations, and SOPs that connect them together for seamless operations.

VoIP & Voice Ops

  • RingCentral, Dialpad, 3CX
  • CallHippo Implementation
  • PBX & IVR Architecture
  • SIP/RTP Trace Diagnostics

CRM & CX Workflows

  • Gorgias Setup
  • Reamaze Optimization
  • Workflow Documentation
  • SOPs & KB Drafting

Risk & Fraud Defense

  • Disputifier (Ethoca/RDR)
  • Shopify Risk Analysis
  • PCI Compliance
  • Chargeback Reversals

E-commerce Ops

  • Shopify Admin Ops
  • CheckoutChamp Flows
  • Seal Subscriptions
  • Team KPI Tracking

Experience

Current VoIP Role

Technical Support Engineer

Mar 2026 - Present

BryteCall LLC

  • Cloud PBX Administration: Support multi-tenant business voice environments, including users, numbers, call flows, ring groups, queues, voicemail, and voice applications.
  • SIP & RTP Troubleshooting: Investigate call routing, registration, one-way audio, call quality, NAT, firewall, and carrier-related issues using logs and packet-level evidence.
  • Endpoint Provisioning: Configure, provision, and troubleshoot Yealink, Poly, Grandstream, Cisco, and other SIP devices across varied customer networks.
  • Escalations & Compliance: Handle number porting, carrier coordination, call recording, SMS delivery, and A2P 10DLC registration requirements.
Previous Role

VoIP Technical Support Engineer

Jan 2025 - Feb 2026

RingCentral

  • UCaaS & PBX Management: Handling complex call routing, auto attendants, ring groups, and IVR configurations for enterprise clients.
  • SIP & Network Troubleshooting: Diagnosing call quality issues (jitter, latency, one-way audio), analyzing SIP traces & RTP streams, and resolving network-related VoIP problems (DNS, NAT, QoS).
  • Core StrengthDevice Provisioning: Executed complex manual and auto-provisioning of SIP endpoints. Navigated intricate network and firewall settings to customize Yealink, Polycom, Cisco, Avaya, Mitel, and 3CX softphones.
  • Escalations & Compliance: Managing carrier-level escalations, number porting, and ensuring A2P SMS compliance via TCR.

Operations Setup & Systems Specialist

2025

Confidential E-commerce Brands (Contract Roles)

Concurrent project-based roles showcasing systems architecture and platform integrations.

  • Infrastructure Setup: Built complete operational CRM packages (Gorgias, Reamaze) and mapped complex technical email flows via CheckoutChamp.
  • Telecom Implementation: Configured and managed cloud PBX systems including Dialpad, 3CX, and CallHippo to launch dedicated voice support channels for high-volume stores, establishing complex call routing and IVR flows.
  • Technical Risk Management: Deployed RDR/Ethoca API firewalls via Disputifier and configured manual payment capture systems to prevent fraudulent transactions.
  • Process Engineering: Authored workflow documentation and standard operating procedures (SOPs) for support teams.

Let's Secure Your Communications

I am ready to bring my VoIP and systems expertise to your team. Whether you need an escalation handler, an implementation specialist, or a technical ops manager, let's connect.

Prefer to email directly? adriancunananjune@gmail.com

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