CAMEL and protocol design
Today I want to share the pain of running a production 3GPP TCAP/MAP/CAP system and network protocol design in general. The excellent Free Software ASN1/TCAP/MAP/CAP stack (which is made possible by the Pharo live programming environment) I helped creating is in heavy production usage (powering standard off-the-shelf components like a SGSN, an AuC or non-standard components to enable new business cases) and sees roaming traffic from a lot of networks. From time to time something odd comes up. In TCAP/MAP/CAP messages but also…