I’ve upgraded to to asterisk 11.25.1 (from 1.8). My local asterisk is showing it is registered with remote asterisk (same version), But when I try to make a call I get:

iax2 show registry Host dnsmgr Username Perceived Refresh State
192.168.142.1:4569 N home_serve 192.168.142.7:4569
60 Registered

1 IAX2 registrations.
— Accepted AUTHENTICATED TBD call from 10.0.0.108
— Accepting DIAL from 10.0.0.108, formats = (ulaw)
— Executing [4@internal:1] Dial(“IAX2/iaxy-322-3730”,
“IAX2/home_server:546987@192.168.141.1/4,30,rw”) in new stack
— Called IAX2/home_server:xxxxx@192.168.141.1/4
— Call accepted by 192.168.141.1 (format ulaw)
— Format for call is (ulaw)
— IAX2/192.168.141.1:4569-83 answered IAX2/iaxy-322-3730
— Channel ‘IAX2/192.168.141.1:4569-83’ unable to transfer
— Channel ‘IAX2/192.168.141.1:4569-83’ unable to transfer
— Hungup ‘IAX2/192.168.141.1:4569-83’
== Spawn extension (internal, 4, 1) exited non-zero on ‘IAX2/iaxy-322-3730’
— Hungup ‘IAX2/iaxy-322-3730’

Is there something wrong with my dial plan:
exten => 4,1,Dial(IAX2/home_server:xxxxxx@${clinic_server}/${EXTEN},30,rw)