ce7a98206a
Only when busy, the channel has callref. This is required for audio routing. During setup, the callref assigned to transaction and kept there until release to/from upper layer.
This software implements base station protocol of classic mobile phones. With radio transmitter and receiver connected to one sound card and a headset connected to another sound card, it is possible to make and receive calls to and from mobile phone. Currently supported networks: * A-Netz * B-Netz (ATF-1) * C-Netz * NMT 450 (Nordic Mobile Telephone) * AMPS (Advanced Mobile Phone System) USE AT YOUR OWN RISK! Acknowledgements: Carsten Wollesen for donating Telefunken 4015 B-Netz phone back in the 90's. Klaus Adler for helping me to retrieve complete NMT specification and donating a BSA44 (magnetic card C-Netz hackable phone) back in the 90's. Andy Zauner for providing signaling specification of C-Netz back in the 90's. Hans Wigger for providing valuable informations about A-Netz and B-Netz and helping me to get an A-Netz phone. Stephan Hessberger for his work on oebl.de, that provides valuable informations about A-Netz, B-Netz and C-Netz. Friedhelm Hillebrand for providing complete specification of the mobile phone of C-Netz. Mikko Ristila for providing newer NMT specs (with DMS/SMS specifications). Dieter and Mark for prividing AMPS specifications and tester recordings to verify and debug AMPS support.