On my PC there is some problem with audio device, the system cannot detect it.
As a result Asterisk cannot load the module chan_celliax.so. Here is the output that I get during Asterisk start up.
ALSA lib confmisc.c:769:(parse_card) cannot find card ''
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_concat returned error: No such device
ALSA lib confmisc.c:1251:(snd_func_refer) error evaluating name
ALSA lib conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such device
ALSA lib conf.c:3982:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default:0
Nov 8 12:42:55 ERROR[6507]: chan_celliax.c:4249 alsa_open_dev: $Revision: 650 $[b7b888c0][ERROR 4249 ][nicephone ][-1, 0, 0, 0] snd_pcm_open failed with error 'No such device' on device 'default:0', if you are using a plughw:n device please change it to be a default:n device (so to allow it to be shared with other concurrent programs), or maybe you are using an ALSA voicemodem and slmodemd is running?
Nov 8 12:42:55 ERROR[6507]: chan_celliax.c:3893 alsa_init: $Revision: 650 $[b7b888c0][ERROR 3893 ][nicephone ][-1, 0, 0, 0] Failed opening ALSA capture device: default:0
Nov 8 12:42:55 ERROR[6507]: chan_celliax.c:3258 mkif: $Revision: 650 $[b7b888c0][ERROR 3258 ][nicephone ][-1, 0, 0, 0] Failed initializing sound device
Nov 8 12:42:55 ERROR[6507]: chan_celliax.c:2595 load_module: $Revision: 650 $[b7b888c0][ERROR 2595 ][none ][-1,-1,-1,-1] Unable to create channel Celliax from celliax.conf category '[nicephone]'
Nov 8 12:42:55 WARNING[6507]: loader.c:415 __load_resource: chan_celliax.so: load_module failed, returning -1
Nov 8 12:42:55 NOTICE[6507]: chan_celliax.c:2754 unload_module: $Revision: 650 $[b7b888c0][NOTICE 2754 ][none ][-1,-1,-1,-1] Unloaded Celliax Module
Nov 8 12:42:55 WARNING[6507]: loader.c:555 load_modules: Loading module chan_celliax.so failed!
Is there any possibility to use Celliax in this case without sound device?
no audio no celliax
no, there is no possibility to use celliax without audio device