Harald Welte
45b407ad25
A new function trau_recv_lchan() is used to link a channel to a call reference of a transaction. (Transactions are used in later patches.) TRAU frames will then be forwarded to the application with the given call reference (in later patches). Also the application can send TRAU frames by using trau_send_lchan(). A new list is introduced in trau_mux.c. (upqueue_entry) All subslots that must be sent to application are listed here. Received TRAU frames are written in the upqueue of application interface, if a call reference is found in the upqueue-list. If an entry is found the ss_entry list, the TRAU frames are bridged as before. The frames have a message type (msg_type), a call reference (callref) and a trau frame (data). The length of trau frame is defined by the content of the c-bits inside the frame. There is no support for ip.access yet, as they don't use the traditional TRAU frame format. Harald must add this in order to use application interface with ip-access. The bridging with ip-access works as before. (Andreas Eversberg) |
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README
About OpenBSC ============= OpenBSC is a minimalistic implementation of the GSM Network, with particular emphasis on the functionality typically provided by the BSC, MSC, HLR, VLR. Its only current interface is a mISDN based E1 interface utilizing the A-bis protocol between BSC and BTS. In other words, you can connect an existing GSM Base Transceiver Station (BTS) through E1 to OpenBSC. So far, it has only been tested with the Siemens microBTS BS-11. Test reports with other BTS are appreciated! This project is still in its early days, and there are lots of areas where it doesn't behave as per GSM spec. December 29, 2008 Harald Welte <laforge@gnumonks.org>