Hi all, I have followed this wiki page to intall gsmopen module http://wiki.freeswitch.org/wiki/GSMopen#Linux Installed following prerequisites packages # yum -y install alsa-lib-devel alsa-utils I downloaded gsmlib-1.10-12ubuntu1 and patched, compiled it no error. #cd /#/usr/local/src/freeswitch-1.0.7/src/mod/endpoints/mod_gsmopen/gsmlib/gsmlib-1.10-patched-12ubuntu1 #make clean #make install Nokia-3208c connected with USB. Use minicom,I can dialout from GSM. When I load mod_gsmopen, following error message. What's wrong? freeswitch@localhost.localdomain> load mod_gsmopen 2011-05-26 15:27:45.465196 [INFO] mod_enum.c:808 ENUM Reloaded 2011-05-26 15:27:45.465196 [INFO] switch_time.c:954 Timezone reloaded 530 definitions 2011-05-26 15:27:45.503006 [WARNING] mod_gsmopen.cpp:1860 rev [(nil)|37 ][WARNINGA 1860 ][interface1][-1, 0, 0] STARTING interface_id=1 2011-05-26 15:27:51.507876 [ERR] gsmopen_protocol.cpp:696 rev [(nil)|37 ][ERRORA 696 ][interface1][-1, 0, 0] no response to AT 2011-05-26 15:27:51.507876 [ERR] mod_gsmopen.cpp:1907 rev [(nil)|37 ][ERRORA 1907 ][interface1][-1, 0, 0] gsmopen_serial_config failed, let's try again 2011-05-26 15:27:55.629412 [ERR] gsmopen_protocol.cpp:696 rev [(nil)|37 ][ERRORA 696 ][interface1][-1, 0, 0] no response to AT 2011-05-26 15:27:55.629412 [ERR] mod_gsmopen.cpp:1913 rev [(nil)|37 ][ERRORA 1913 ][interface1][-1, 0, 0] 1: gsmopen_serial_config failed, let's try again 2011-05-26 15:27:57.854725 [ERR] gsmopen_protocol.cpp:2285 rev [(nil)|37 ][ERRORA 2285 ][interface1][-1, 0, 0] Error RE-sending (carriage return): 10 -1 (Invalid or incomplete multibyte or wide character) 2011-05-26 15:27:57.854725 [ERR] gsmopen_protocol.cpp:2364 rev [(nil)|37 ][ERRORA 2364 ][interface1][-1, 0, 0] Error sending data... (Invalid or incomplete multibyte or wide character) 2011-05-26 15:27:57.854725 [ERR] gsmopen_protocol.cpp:696 rev [(nil)|37 ][ERRORA 696 ][interface1][-1, 0, 0] no response to AT 2011-05-26 15:27:57.854725 [ERR] mod_gsmopen.cpp:1913 rev [(nil)|37 ][ERRORA 1913 ][interface1][-1, 0, 0] 2: gsmopen_serial_config failed, let's try again 2011-05-26 15:28:00.621621 [ERR] gsmopen_protocol.cpp:2259 rev [(nil)|37 ][ERRORA 2259 ][interface1][-1, 0, 0] Error RE-sending (A): 10 -1 (Invalid or incomplete multibyte or wide character) 2011-05-26 15:28:00.621621 [ERR] gsmopen_protocol.cpp:2364 rev [(nil)|37 ][ERRORA 2364 ][interface1][-1, 0, 0] Error sending data... (Invalid or incomplete multibyte or wide character) 2011-05-26 15:28:00.621621 [ERR] gsmopen_protocol.cpp:696 rev [(nil)|37 ][ERRORA 696 ][interface1][-1, 0, 0] no response to AT 2011-05-26 15:28:00.621621 [ERR] mod_gsmopen.cpp:1913 rev [(nil)|37 ][ERRORA 1913 ][interface1][-1, 0, 0] 3: gsmopen_serial_config failed, let's try again ........................ freeswitch@localhost.localdomain> 2011-05-26 15:28:05.063925 [ERR] mod_gsmopen.cpp:1917 rev [(nil)|37 ][ERRORA 1917 ][interface1][-1, 0, 0] STARTING interface_id=1 FAILED 2011-05-26 15:28:05.063925 [ERR] mod_gsmopen.cpp:3146 rev [(nil)|37 ][ERRORA 3146 ][interface1][-1, 0, 0] ALARM on interface interface1: 2011-05-26 15:28:05.063925 [CONSOLE] switch_loadable_module.c:946 Successfully Loaded [mod_gsmopen] 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:145 Adding Endpoint 'gsmopen' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:274 Adding API Function 'gsm' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:274 Adding API Function 'gsmopen' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:274 Adding API Function 'gsmopen_boost_audio' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:274 Adding API Function 'gsmopen_dump' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:274 Adding API Function 'gsmopen_sendsms' 2011-05-26 15:28:05.063925 [NOTICE] switch_loadable_module.c:379 Adding Chat interface 'SMS' Thank you Tang du -- View this message in context: http://freeswitch-users.2379917.n2.nabble.com/Error-load-mod-gsmopen-tp64062... Sent from the freeswitch-users mailing list archive at Nabble.com.