extensions.conf: exten => s,n,Dial(SIP/205,6,r)
asterisk's output (does work fine):
-- Executing Dial("Zap/6-1", "SIP/205|6|r") in new stack
-- Called 205
-- SIP/205-bb77 is ringing
-- Nobody picked up in 6000 ms
-- Hungup 'Zap/6-1'
extensions.conf: exten => s,n,Dial(Zap/G1/${s_phone},6,r)
asterisk's output (doesn't work as it should):
-- Executing Dial("Zap/6-1", "Zap/G1/07966016252|6|r") in new stack
-- Called G1/07966016252
-- Zap/7-1 answered Zap/6-1
-- Attempting native bridge of Zap/6-1 and Zap/7-1
-- Hungup 'Zap/7-1'
== Spawn extension (shq-ip-s-a-h, s, 4) exited non-zero on 'Zap/6-1'
-- Hungup 'Zap/6-1'