[Asterisk-Users] IAX or IAX2 ?

[Stefan-Michael. Guenther (in-put GbR)]

Hi,

I have read the wiki entries on IAX(2), but I'm afraid, it still have some 
questions:

I have a working connection between two Asterisk-Servers (Asterisk 
1.0.7-BRIstuffed-0.2.0-RC7k on Debian 3.1) via IAX. 
Does this connection work with IAX or IAX2? 

When I try to load chan_iax2.so, I get the error message

chan_iax2.so]Oct 11 10:09:52 WARNING[2288]: loader.c:258 
ast_load_resource: /usr/lib/asterisk/modules/chan_iax2.so: undefined symbol: 
ast_check_signature
Oct 11 10:09:52 WARNING[2288]: loader.c:391 load_modules: Loading module 
chan_iax2.so failed!

[modules.conf]
	[modules]
	autoload=yes

	noload => pbx_gtkconsole.so
	noload => pbx_kdeconsole.so
	noload => app_intercom.so
	noload => chan_modem.so
	noload => chan_modem_aopen.so
	noload => chan_modem_i4l.so
	noload => chan_modem_bestdata.so
	noload => chan_alsa.so
	noload => chan_oss.so
	noload => rate_engine.so
	nolo	ad => chan_zap.so

	load => res_features.so
	load => res_musiconhold.so
	load => chan_capi.so
	load => chan_sip.so
	load => chan_iax2.so

	[global]
	chan_capi.so=yes

Does Asterisk automatically use IAX, but IAX2 only when it is loaded via 
modules.conf?

Google doesn't return a lot of entries for "undefined symbol: 
ast_check_signature"

Thanks for any hint,

Stefan