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Professional signaling tool for mapping Circuit Identification Codes (CICs) to physical trunks and signaling points to ensure consistent call setup across SS7 networks.
ISUP CIC range calculators map trunk-group size to Circuit Identification Code blocks so both exchanges provision the same bearer identities.
The calculator takes the base CIC provided by the network design and increments it based on the number of voice circuits in the trunk group. It validates the resulting range against the 12-bit or 14-bit ISUP CIC protocol limits.
Built on 3GPP Technical Specifications, ensuring accuracy for production deployments and security audits.
Calculations specifically designed to identify protocol vulnerabilities and signaling misconfigurations.
Based on ITU-T Q.763 standards for ISDN User Part formats. Helps prevent 'single-way audio' or 'circuit busy' errors caused by CIC misalignment between adjacent signaling nodes.
Edge-V8 Isolate
Technical Audit
< 50ms (Global)
Secured by Auth0
A 30-circuit group starting at CIC 100 occupies 100–129. Documenting that range prevents the peer from assigning 120–149 to another group.
National CIC numbering conventions may add constraints beyond simple arithmetic.
A Circuit Identification Code labels a bearer circuit within a trunk group between exchanges. CIC ranges must be unique and agreed on both ends.
Allocate a contiguous block sized to engineered channels, document start/end CICs, and keep spare for growth without overlapping peer ranges.
Native SIP uses call-ids/sessions, not CICs. CIC planning remains for TDM/ISUP and some SIP-I interworking cases.
Convert between ITU, ANSI, and other SS7 point code formats.
Interactive signaling flow generator for GTPv1/GTPv2 control plane procedures.
Optimize roaming costs and steering efficacy using Signaling and OTA methods.
Decode Advanced 5G & LTE Signaling Protocols
Bring the theory to life. Access visual call flows, 3GPP standards walkthroughs, and GTP-U tunnel optimization training designed for core network architects.
SSO Link: Academy Node 0x93FF