diff options
| -rw-r--r-- | main/udptl.c | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/main/udptl.c b/main/udptl.c index 42bf7af5a..39c047183 100644 --- a/main/udptl.c +++ b/main/udptl.c @@ -8,13 +8,44 @@ * * Steve Underwood <steveu@coppice.org> * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * * This program is free software, distributed under the terms of - * the GNU General Public License + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. * * A license has been granted to Digium (via disclaimer) for the use of * this code. */ +/*! + * \file + * + * \brief UDPTL support for T.38 faxing + * + * + * \author Mark Spencer <markster@digium.com>, Steve Underwood <steveu@coppice.org> + * + * \page T38fax_udptl T38 fax passhtrough :: UDPTL + * + * Asterisk supports T.38 fax passthrough. Asterisk will not be a client, server + * or any form of gateway. Currently fax passthrough is only implemented in the + * SIP channel for strict SIP to SIP calls. If you are using chan_local or chan_agent + * as a proxy channel, T.38 passthrough will not work. + * + * UDPTL is handled very much like RTP. It can be reinvited to go directly between + * the endpoints, without involving Asterisk in the media stream. + * + * \b References: + * - chan_sip.c + * - udptl.c + */ + + #include "asterisk.h" ASTERISK_FILE_VERSION(__FILE__, "$Revision$") @@ -57,8 +88,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$") static int udptlstart; static int udptlend; -static int udptldebug; /* Are we debugging? */ -static struct sockaddr_in udptldebugaddr; /* Debug packets to/from this host */ +static int udptldebug; /*!< Are we debugging? */ +static struct sockaddr_in udptldebugaddr; /*!< Debug packets to/from this host */ #ifdef SO_NO_CHECK static int nochecksums; #endif @@ -87,6 +118,7 @@ typedef struct { int fec_entries; } udptl_fec_rx_buffer_t; +/*! \brief Structure for an UDPTL session */ struct ast_udptl { int fd; char resp; |