Carrier Engineering Tools & VoIP Network Calculators
Free interactive telecommunications engineering tools for network architects and operations desks.
VoIP MOS & PDD Latency Estimator
Calculate audio fidelity (MOS 1.0 to 4.5) based on codec bitrate, jitter buffer, and one-way delay.
E.164 Dial Code & STIR/SHAKEN Validator
Verify international prefix compliance, country destination routing, and cryptographic caller attestation.
SMPP SMS PDU Segment Calculator
Estimate GSM 7-bit vs UCS-2 character limits, UDH header bytes, and concatenated messaging cost.