I have one more question: 6. Our installation of FreeSWITCH :

FreeSWITCH Version 1.0.rc4 (exported) Started.

after :

load mod_openzap ... 2008-08-28 10:39:28 [DEBUG] zap_isdn.c:783 zap_isdn_configure_span() opening d-channel #0 1:16 2008-08-28 10:39:28 [DEBUG] zap_isdn.c:783 zap_isdn_configure_span() opening d-channel #0 2:16 2008-08-28 10:39:28 [CONSOLE] switch_loadable_module.c:749 switch_loadable_module_load_file() Successfully Loaded [mod_openzap] ... oz list API CALL [oz(list)] output: +OK span: 1 type: isdn chan_count: 31 dialplan: XML context: public dial_regex: fail_dial_regex: hold_music: analog_options none +OK span: 2 type: isdn chan_count: 31 dialplan: XML context: public dial_regex: fail_dial_regex: hold_music: analog_options none

On the console such messages are deduced from time to time (1 per minute or even rare): 2008-08-28 10:54:10 [WARNING] zap_zt.c:636 zt_next_event() Unhandled event 8 2008-08-28 10:54:10 [DEBUG] zap_isdn.c:591 process_event() EVENT [INVALID][1:16] STATE [DOWN] - in nessage Unhandled event mostly 8, occasionally 6 or 7 FreeSWITCH Version 1.0.trunk (9235) works on other side of E1channel:

FreeSWITCH Version 1.0.trunk (9235) Started.

and there are no such messages on this side. Thus PRI signalization is correctly transfered on span E1. What does it mean ???