[ Context 'prov-is' created by 'pbx_config' ]
  'h.' =>           1. NoOp(Cause keys: ${HANGUPCAUSE_KEYS()})    [pbx_config]
                    2. Return()                                   [pbx_config]
  't' =>            1. Log(ERROR,Call from ${CALLERID(num)} to ${CDR(dialed)} via IS timed out for ${CHANNEL(peername)}) [pbx_config]
                    2. Return()                                   [pbx_config]
  '_X.' =>          1. Verbose(1,Passing call on to IS, CID=${CALLERID(num)}, DID=${EXTEN}) [pbx_config]
-- snip -- stuff I may not share --
                    7. Set(CHANNEL(hangup_handler_push)=prov-hangup,s,1) [pbx_config]
                    8. Dial(SIP/IS/${EXTEN},${dialtimeout},${dialopts}) [pbx_config]
                    9. NoOp(Cause keys: ${HANGUPCAUSE_KEYS()})    [pbx_config]
                    10. Return()                                  [pbx_config]

[ Context 'prov-hangup' created by 'pbx_config' ]
  's' =>            1. Set(HANGUPCAUSE_STRING=${HANGUPCAUSE_KEYS()}) [pbx_config]
                    2. NoOP(Cause keys: ${HANGUPCAUSE_STRING})    [pbx_config]
                    3. Return()                                   [pbx_config]

[ Context 'uls-from-trunk' created by 'pbx_config' ]
  '_[+0-9]!' =>     1. NoCDR()                                    [pbx_config]
-- snip --
     [godial]       9. Dial(Local/${EXTEN}@uls-place-call/n)      [pbx_config]
                    10. NoOp(Cause keys: ${HANGUPCAUSE_KEYS()})   [pbx_config]
                    11. Hangup()                                  [pbx_config]