VoIP & SIP Consulting

Sometimes you do not need a new system, you need someone who can read a SIP trace and tell you what is actually wrong. I take on diagnostic work: one-way audio, registration failures, call quality complaints, and carrier disputes where you need evidence rather than opinions.

What's included

• Packet-level SIP and RTP analysis (sngrep, tcpdump, Wireshark)
• Root-cause diagnosis for one-way audio, dropped and failed calls
• Call quality investigation: jitter, packet loss, codec issues
• Firewall, NAT and SIP ALG configuration review
• Security audit — toll fraud exposure and hardening
• Capacity and bandwidth planning
• Written findings you can take to your carrier or ISP
• Second opinion on a vendor proposal or stalled project

Problems this solves

• Intermittent call failures nobody has been able to reproduce
• Carrier and IT each insisting the problem is the other side
• Call quality complaints without a clear cause
• Concern about toll fraud or an insecure PBX exposed to the internet

How we work

1. 1
   Talk

   Tell me the problem or the goal. No charge, no obligation.

2. 2
   Scope

   You get a clear plan, a fixed price, and a realistic timeline.

3. 3
   Build

   I implement and test it, keeping you updated as it progresses.

4. 4
   Handover

   Working system, documentation, and support after go-live.

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