Telecom Calculators
30 free telecom calculators in Networking. The first 2 have a full write-up: the method, a worked example and questions specific to that calculator.
- Erlang BCalculate call blocking probability and required trunk lines using the Erlang B formula.
- Voice Codec BandwidthCalculate bandwidth consumption per call for common VoIP codecs including overhead.
- 5G NR Capacity CalculatorWork out 5G NR cell capacity from bandwidth, spectral efficiency, MIMO layers, control overhead and the TDD split.
- Backhaul Bandwidth CalculatorDimension cell-site backhaul from peak cell rates, statistical multiplexing gain, growth and protection overhead.
- Busy Hour TrafficCalculate busy hour call traffic in Erlangs from call volume and duration.
- Call BlockingCalculate the probability of call blocking for a given number of trunks and traffic load.
- Call CapacityCalculate maximum simultaneous call capacity for a given trunk or bandwidth allocation.
- Call Setup Delay CalculatorAdd up signalling hops, processing time and radio setup to get post-dial delay and check it against the ITU target.
- Carrier-Grade NAT Capacity CalculatorWork out subscribers per public IPv4 address, total port-block demand and how many public addresses a CGNAT pool needs.
- Charging Session CalculatorEstimate online charging TPS, daily CDR volume and mediation storage for a subscriber base.
- Diameter CapacityCalculate Diameter signaling transaction capacity for a given link and message rate.
- eNodeB Capacity CalculatorSize an eNodeB: sector throughput, connected users, S1 transport requirement and RRC connection load.
- Erlang CCalculate call center agent staffing and wait probability using the Erlang C formula.
- gNodeB Capacity CalculatorSize a 5G gNodeB across its cells: air-interface capacity, N3 midhaul transport and supported connected devices.
- GTP Tunnel CalculatorSize GTP-U transport for a bearer population, including encapsulation overhead and packet-per-second load.
- IMS Session CalculatorEstimate concurrent IMS sessions, SIP transaction rate and the number of CSCF nodes a subscriber base needs.
- ISP Bandwidth Oversubscription CalculatorCheck an access node's contention ratio: sold capacity versus uplink, busy-hour demand and the throughput each subscriber really gets.
- LTE Cell Capacity CalculatorEstimate LTE cell and site throughput from channel bandwidth, spectral efficiency and MIMO layers.
- MEC Capacity CalculatorSize multi-access edge compute: offloaded traffic, edge server count and the round-trip latency saved versus the central core.
- PCRF Capacity CalculatorSize PCRF/PCF policy nodes from subscriber count, sessions per subscriber and Gx transaction rate with N+1 redundancy.
- RTP Bandwidth CalculatorCompute true on-the-wire RTP bandwidth per call including RTP, UDP, IP and layer-2 framing overhead.
- SIP ChannelCalculate the number of concurrent SIP channels supported by available bandwidth.
- SIP Trunk Capacity CalculatorSize a SIP trunk from busy-hour call attempts and hold time: Erlangs, concurrent channels and the bandwidth they consume.
- SMS CapacityCalculate SMS throughput capacity for a messaging gateway or SMPP connection.
- SS7 Link CapacityCalculate signaling capacity of an SS7 link based on link speed and message size.
- Subscriber Capacity CalculatorWork out how many subscribers a cluster of core nodes supports, with redundancy reserved and headroom against today's load.
- Subscriber Growth Forecast CalculatorProject subscriber numbers with compound growth and churn, and see when the forecast crosses your platform's capacity.
- Telecom Network Health Score CalculatorScore a mobile network out of 100 from accessibility, retainability, call success rate, latency and congestion KPIs.
- VoLTE Capacity CalculatorSize VoLTE load: Erlangs, concurrent QCI-1 bearers, busy-hour call attempts and the bearer bandwidth required.
- VoWiFi Capacity CalculatorFind how many VoWiFi calls an access point can carry from its PHY rate and airtime efficiency, and how many APs a site needs.