Voice Network Tools
Calculators and reference tools for sizing, troubleshooting, and planning SIP trunk and VoIP deployments.
VoIP Bandwidth Calculator
Estimate the bandwidth your VoIP traffic requires based on codec, packetization interval, concurrent calls, and transport overhead.
SIP Trunk Sizing Calculator
Size your SIP trunk channels from busy-hour call volume or headcount using Erlang B. Includes sensitivity analysis and bandwidth estimates.
SIP Response Code Decoder
Look up any SIP response code to see what it means, what typically causes it, and where to start troubleshooting.
STIR/SHAKEN PASSporT Decoder
Paste a SIP Identity header or PASSporT token to check its attestation, claims and certificate URL against the SHAKEN profile.
Robocall & Caller-ID Enforcement Tracker
Track the FCC removals, blocking orders and caller ID authentication rules that affect your traffic, each linked to its primary source.
SBC Routing Configuration Library
Copy and adapt ProSBC routing configurations in Ruby, from least-cost routing and carrier failover to toll-fraud limits and STIR/SHAKEN attestation.