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Professional-grade calculator for dimensioning voice traffic capacity across IP networks, including precise protocol overhead analysis for trunking and tunneling.
VoIP bandwidth calculators multiply concurrent calls by per-call IP rate for G.711/G.729 (including RTP/UDP/IP overhead) so WAN and QoS classes match real packet sizes, not raw codec bitrates.
This calculator applies the formula [Total Bandwidth = Packet Size / Packetization Interval] while accounting for standard protocol overheads. It calculates the resulting bits per second (bps) and packets per second (pps) for both directions.
Built on 3GPP Technical Specifications, ensuring accuracy for production deployments and security audits.
Calculations specifically designed to identify protocol vulnerabilities and signaling misconfigurations.
Aligned with IETF RFC 3550 (RTP) and industry-standard G.7xx codec specifications. Supports fixed and variable bitrate (VBR) estimation logic.
Edge-V8 Isolate
Technical Audit
< 50ms (Global)
Secured by Auth0
50 concurrent G.711 calls at ~87 kbps ≈ 4.35 Mbps media. Add ~10–20% for RTCP/signaling/headroom → provision ≈5.2 Mbps in the voice QoS class.
Does not model silence suppression savings, stereo, or video. Header sizes differ for IPv6 and Ethernet FCS — treat results as L3 planning unless you include L2.
Payload is 64 kbps. With 20 ms packets, RTP/UDP/IPv4 headers typically push on-wire rates near ~87 kbps per call (more with Ethernet/VLAN or IPv6). Use the calculator for exact packetization timers.
G.729 payload is 8 kbps; with the same headers at 20 ms, on-wire rates often land near ~40 kbps/call. Savings are large on WAN links but require codec support end-to-end.
Yes for media. Also reserve capacity for SIP signaling, RTCP, and asymmetric peaks. QoS LLQ should match the engineered voice class, not the best-effort total.
Calculate required SIP trunks based on traffic parameters and quality requirements.
Dimension P-CSCF, S-CSCF, and I-CSCF nodes for VoLTE/VoNR networks based on BHCA and concurrent sessions.
Classic tool for determining circuit requirements with zero queuing.
Deep-Dive Into Carrier VoIP & IMS Architectures
Understand the core call flow mechanics. Learn SIP signaling optimization, IMS dimensioning standards, and media transport encryption directly on TelcoSec Academy.
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