SS7 Point Code Calculator
Convert between different SS7 point code formats used in telecommunications networks worldwide. This tool supports ITU, ANSI, Japan, and China formats.
3-8-3 bit format (14 bits total)
8-8-8 bit format (24 bits total)
Example: 3-8-3
Format Information
ITU (International)
Used internationally according to ITU-T standards
3-8-3 bit format (14 bits total)
ANSI (North America)
Used in North America and some other regions
8-8-8 bit format (24 bits total)
Signaling System No. 7 (SS7) is a set of telephony signaling protocols developed in 1975, which is used to set up and tear down most of the world's public switched telephone network (PSTN) telephone calls. It also performs number translation, local number portability, prepaid billing, short message service (SMS), and other mass market services.
Point codes are numerical addresses used in SS7 networks to identify specific nodes. Different regions use different point code formats:
- ITU (International): 3-8-3 bit format (14 bits total)
- ANSI (North America): 8-8-8 bit format (24 bits total)
- Japan: 5-4-7 bit format (16 bits total)
- China: 8-8-8 bit format (similar to ANSI but with different network/cluster/member meanings)
This calculator helps convert between these different formats, which is crucial for network engineers and telecom professionals working with international SS7 networks.
Point Code Structure
Point codes typically follow a hierarchical structure with three components:
- Network Identifier: Identifies a specific network
- Cluster Identifier: Identifies a group of signaling points within a network
- Member Identifier: Identifies a specific signaling point within a cluster
These components are represented in different bit lengths depending on the format, but they all serve the same purpose of uniquely identifying network elements in the SS7 ecosystem.
- Network planning and design across international boundaries
- Troubleshooting signaling issues between networks using different formats
- Documentation and mapping of interconnections between operators
- Security analysis and penetration testing of SS7 networks
- Migration projects between different signaling standards
- Point codes can be represented in decimal or dotted decimal notation
- When converting between formats with different bit lengths, some precision may be lost
- The calculator handles the bit-level conversion between different formats
- For ITU format, the standard representation is Network-Cluster-Member (e.g., 2-182-1)
- For ANSI format, the standard representation is Network-Cluster-Member (e.g., 245-16-3)
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