Wich codec i've to enable to receive fax via app_rxfax?

Asterisk Asterisk Support
1

It seems i’ve to enable some modules i don’t know:

== Starting Modem[i4l]/ttyI0 at isdn-inbound,650795239,1 failed so falling back to exten ‘s’
– Executing Answer(“Modem[i4l]/ttyI0”, “”) in new stack
– Executing Wait(“Modem[i4l]/ttyI0”, “2”) in new stack
– Executing SetVar(“Modem[i4l]/ttyI0”, “FAXFILE=/var/spool/asterisk/fax/fax_823933998_20060116-123237.tif”) in new stack
– Executing RxFAX(“Modem[i4l]/ttyI0”, “/var/spool/asterisk/fax/fax_823933998_20060116-123237.tif”) in new stack
Jan 16 12:32:51 NOTICE[10391]: channel.c:1757 ast_set_read_format: Unable to find a path from slin to unknown
Jan 16 12:32:51 WARNING[10391]: app_rxfax.c:309 rxfax_exec: Unable to restore read format on 'Modem[i4l]/ttyI0’
Jan 16 12:32:51 NOTICE[10391]: channel.c:1724 ast_set_write_format: Unable to find a path from unknown to slin
Jan 16 12:32:51 WARNING[10391]: app_rxfax.c:315 rxfax_exec: Unable to restore write format on ‘Modem[i4l]/ttyI0’
== Spawn extension (isdn-inbound, s, 4) exited non-zero on ‘Modem[i4l]/ttyI0’
– Hungup ‘Modem[i4l]/ttyI0’

2

[quote=“agx”]It seems i’ve to enable some modules i don’t know:

== Starting Modem[i4l]/ttyI0 at isdn-inbound,650795239,1 failed so falling back to exten ‘s’
– Executing Answer(“Modem[i4l]/ttyI0”, “”) in new stack
– Executing Wait(“Modem[i4l]/ttyI0”, “2”) in new stack
– Executing SetVar(“Modem[i4l]/ttyI0”, “FAXFILE=/var/spool/asterisk/fax/fax_823933998_20060116-123237.tif”) in new stack
– Executing RxFAX(“Modem[i4l]/ttyI0”, “/var/spool/asterisk/fax/fax_823933998_20060116-123237.tif”) in new stack
Jan 16 12:32:51 NOTICE[10391]: channel.c:1757 ast_set_read_format: Unable to find a path from slin to unknown
Jan 16 12:32:51 WARNING[10391]: app_rxfax.c:309 rxfax_exec: Unable to restore read format on 'Modem[i4l]/ttyI0’
Jan 16 12:32:51 NOTICE[10391]: channel.c:1724 ast_set_write_format: Unable to find a path from unknown to slin
Jan 16 12:32:51 WARNING[10391]: app_rxfax.c:315 rxfax_exec: Unable to restore write format on ‘Modem[i4l]/ttyI0’
== Spawn extension (isdn-inbound, s, 4) exited non-zero on ‘Modem[i4l]/ttyI0’
– Hungup ‘Modem[i4l]/ttyI0’[/quote]

You are receiving fax at ISDN line, right? It is ulaw or alaw codec. So you have enable one of those codecs.