SS7

Billing of roaming and the future of TAP

When two companies do business, there is generally a monthly invoice and a specification of the goods sold. Roaming has always been different – we have had Transfer Accounting Protocol (“TAP”). For those of you who don’t know, TAP is a container format for the of Call Detail Records (CDRs) …

SS7 fraud

In telecom networks carrying circuit switched traffic, there is the need for a layer of control signalling. This is where SS7 comes in. Signalling System #7 is a packet switched protocol, much like IP, that can carry signalling messages between telecommunication core nodes. ISUP for connectivity – Example: “The subscriber in my …