Thanks for your help. I just tried Idefisk and got the same error. No sounds after typing in 4321#.
-- Executing Answer("SIP/soft-081ac848", "") in new stack
-- Executing AGI("SIP/soft-081ac848", "agi-record_prompts.agi") in new stack
-- Launched AGI Script /var/lib/asterisk/agi-bin/agi-record_prompts.agi
== Spawn extension (default, 8168, 2) exited non-zero on 'SIP/soft-081ac848'
-- Executing DeadAGI("SIP/soft-081ac848", "agi://127.0.0.1:4577/call_log") in new stack
-- AGI Script
agi://127.0.0.1:4577/call_log completed, returning 0
-- Executing DeadAGI("SIP/soft-081ac848", "agi://127.0.0.1:4577/VD_hangup--HVcauses--PRI-----NODEBUG-----0---------------") in new stack
-- AGI Script
agi://127.0.0.1:4577/VD_hangup--HVcause ... ---------- completed, returning 0