Guides
load sharing with point code pairs and SLS masking techniquesIn Signaling System No. 7 networks, the Signal Transfer Point handles millions of messages per second across interconnected carriers. When a pair of STPs is…
MTP2 Link State Control: FISU Interleaving and Error RatesSignalling System No. 7 remains a workhorse across Australian carrier networks, even as the National Broadband Network reshapes the access layer. Inside…
Analyzing SS7 call traces with TShark: a field-by-field walkthroughMany engineers in Australia still work on PSTN interconnects running alongside the NBN, particularly across regional New South Wales and Queensland where…
The role of TCAP transaction IDs in multi-leg roaming scenariosRoaming signalling rarely follows a single straight path. A handset may register with a visited network, query its home network for subscriber data, contact an…
Number Portability Through Signaling Relay Function and INAPAustralia's mobile market thrives on choice. Subscribers regularly switch between Telstra, Optus, Vodafone, and TPG without losing the personal or business…
MAP Update Location with an AuC: A Step-by-Step Signaling WalkthroughThe Mobile Application Part (MAP) Update Location procedure is one of the most fundamental transactions in GSM and UMTS networks. It allows the network to keep…
T1 and E1 physical interfaces for SS7 signaling networksSS7 links have carried call setup messages across carrier networks for decades, and at the physical layer the choice between T1 and E1 remains a quiet but…
ISUP CGB/CGU and Interface Management in Trunk Group MaintenanceOperating a national voice network across Australia means juggling thousands of circuits between Tandem switches in Sydney, Melbourne, Brisbane, and Perth.…
Building a Home SS7 Lab with Asterisk and SigTrans LibrariesAustralia's telecom sector has long punched above its weight. From the copper and microwave links stitching Perth to Sydney together, to today's IP-based…
SS7 Network Topology: Interconnected STPs and Signal RoutesSignaling System No. 7 (SS7) defines the invisible backbone of global telephony, routing call setup, SMS delivery and number portability between carriers. The…
