J'ai un peu avancé dans dahdi-channels.conf


group=0,11
pridialplan=unknown
priindication=outofband
prilocaldialplan=dynamic
context=from-pabx
switchtype = euroisdn
signalling = bri_net

immediate=no
overlapdial=yes

channel => 1-2

J'avais les lignes immediate et overlapdial aprés channel, il semble que ce soit important

Ca ne marche pas encore, mais ça évolue

Code:
Console verbose was OFF and is now 4.
    -- Accepting overlap call from '5560xxxxx' to '<unspecified>' on channel 0/2, span 1
    -- Starting simple switch on 'DAHDI/i1/5560xxxxx-2'
    -- Executing [0@from-pabx:1] Dial("DAHDI/i1/5560xxxxx-2", "") in new stack
[2017-06-13 21:33:38] WARNING[8391][C-00000001]: app_dial.c:2125 dial_exec_full: Dial requires an argument (technology/resource)
  == Spawn extension (from-pabx, 0, 1) exited non-zero on 'DAHDI/i1/5560xxxxx-2'
    -- Hungup 'DAHDI/i1/5560xxxxx-2'