Спасибо за помощь, решил все путем через extensions_override_freepbx.conf :
exten =>recordcheck,n,MixMonitor(${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME}.${MON_FMT},abi(LOCAL_MIXMON_ID)${MIXMON_BEEP},${MIXMON_POST})
Заменил abi на ai (просто удалил символ b)
Результатом буыл:

exten => recordcheck,n,MixMonitor(${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME}.${MON_FMT},ai(LOCAL_MIXMON_ID)${MIXMON_BEEP},${MIXMON_POST})

2.)
var\www\html\admin\modules\callrecording\functions.inc.php
Find string

$ext->add($context, $exten, ‘’, new ext_mixmonitor(’${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME}.${MON_FMT}’,‘abi(LOCAL_MIXMON_ID)${MIXMON_BEEP}’,’${MIXMON_POST}’));

Весь готовый контекст :
[sub-record-check]
include => sub-record-check-custom
exten => s,1,GotoIf($[${LEN(${FROMEXTEN})}]?initialized)
exten => s,n,Set(__REC_STATUS=INITIALIZED)
exten => s,n,Set(NOW=${EPOCH})
exten => s,n,Set(__DAY=${STRFTIME(${NOW},,%d)})
exten => s,n,Set(__MONTH=${STRFTIME(${NOW},,%m)})
exten => s,n,Set(__YEAR=${STRFTIME(${NOW},,%Y)})
exten => s,n,Set(__TIMESTR=${YEAR}${MONTH}${DAY}-${STRFTIME(${NOW},,%H%M%S)})
exten => s,n,Set(__FROMEXTEN=${IF($[${LEN(${AMPUSER})}]?${AMPUSER}:${IF($[${LEN(${REALCALLERIDNUM})}]?${REALCALLERIDNUM}:unknown)})})
exten => s,n,Set(__MON_FMT=${IF($["${MIXMON_FORMAT}"="wav49"]?WAV:${MIXMON_FORMAT})})
exten => s,n(initialized),Noop(Recordings initialized)
exten => s,n,ExecIf($[!${LEN(${ARG3})}]?Set(ARG3=dontcare))
exten => s,n,Set(REC_POLICY_MODE_SAVE=${REC_POLICY_MODE})
exten => s,n,ExecIf($["${BLINDTRANSFER}${ATTENDEDTRANSFER}" != ""]?Set(REC_STATUS=NO))
exten => s,n(next),GotoIf($[${LEN(${ARG1})}]?checkaction)
exten => s,n(recorderror),Playback(something-terribly-wrong,error)
exten => s,n,Hangup
exten => s,n(checkaction),GotoIf($[${DIALPLAN_EXISTS(sub-record-check,${ARG1})}]?sub-record-check,${ARG1},1)
exten => s,n,Noop(Generic ${ARG1} Recording Check - ${FROMEXTEN} ${ARG2})
exten => s,n,Gosub(recordcheck,1(${ARG3},${ARG1},${ARG2}))
exten => s,n,Return()

exten => recordcheck,1,Noop(Starting recording check against ${ARG1})
exten => recordcheck,n,Goto(${ARG1})
exten => recordcheck,n(dontcare),Return()
exten => recordcheck,n(always),Noop(Detected legacy "always" entry. Mapping to "force")
exten => recordcheck,n(force),Set(__REC_POLICY_MODE=FORCE)
exten => recordcheck,n,GotoIf($["${REC_STATUS}"!="RECORDING"]?startrec)
exten => recordcheck,n,Return()
exten => recordcheck,n(delayed),Noop(Detected legacy "delayed" entry. Mapping to "yes")
exten => recordcheck,n(yes),ExecIf($["${REC_POLICY_MODE}" = "NEVER" | "${REC_POLICY_MODE}" = "NO" | "${REC_STATUS}" = "RECORDING"]?Return())
exten => recordcheck,n,Set(__REC_POLICY_MODE=YES)
exten => recordcheck,n,Goto(startrec)
exten => recordcheck,n(no),Set(__REC_POLICY_MODE=NO)
exten => recordcheck,n,Return()
exten => recordcheck,n(never),Set(__REC_POLICY_MODE=NEVER)
exten => recordcheck,n,Goto(stoprec)
exten => recordcheck,n(startrec),Noop(Starting recording: ${ARG2}, ${ARG3})
exten => recordcheck,n,Set(__CALLFILENAME=${ARG2}-${ARG3}-${FROMEXTEN}-${TIMESTR}-${UNIQUEID})
exten => recordcheck,n,MixMonitor(${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME}.${MON_FMT},abi(LOCAL_MIXMON_ID)${MIXMON_BEEP},${MIXMON_POST})
exten => recordcheck,n,Set(__MIXMON_ID=${LOCAL_MIXMON_ID})
exten => recordcheck,n,Set(__RECORD_ID=${CHANNEL(name)})
exten => recordcheck,n,Set(__REC_STATUS=RECORDING)
exten => recordcheck,n,Set(CDR(recordingfile)=${CALLFILENAME}.${MON_FMT})
exten => recordcheck,n,Return()
exten => recordcheck,n(stoprec),Noop(Stopping recording: ${ARG2}, ${ARG3})
exten => recordcheck,n,Set(__REC_STATUS=STOPPED)
exten => recordcheck,n,System(${AMPBIN}/stoprecording.php "${CHANNEL(name)}")
exten => recordcheck,n,Return()
exten => out,1,Noop(Outbound Recording Check from ${FROMEXTEN} to ${ARG2})
exten => out,n,Set(RECMODE=${DB(AMPUSER/${FROMEXTEN}/recording/out/external)})
exten => out,n,ExecIf($[!${LEN(${RECMODE})} | "${RECMODE}" = "dontcare"]?Goto(routewins))
exten => out,n,ExecIf($["${ARG3}" = "never" | "${ARG3}" = "force"]?Goto(routewins))
exten => out,n(extenwins),Gosub(recordcheck,1(${RECMODE},out,${ARG2}))
exten => out,n,Return()
exten => out,n(routewins),Gosub(recordcheck,1(${ARG3},out,${ARG2}))
exten => out,n,Return()

exten => in,1,Noop(Inbound Recording Check to ${ARG2})
exten => in,n,Set(FROMEXTEN=unknown)
exten => in,n,ExecIf($[${LEN(${CALLERID(num)})}]?Set(FROMEXTEN=${CALLERID(num)}))
exten => in,n,Gosub(recordcheck,1(${ARG3},in,${ARG2}))
exten => in,n,Return()

exten => exten,1,Noop(Exten Recording Check between ${FROMEXTEN} and ${ARG2})
exten => exten,n,Set(CALLTYPE=${IF($[${LEN(${FROM_DID})}]?external:internal)})
exten => exten,n,ExecIf(${LEN(${CALLTYPE_OVERRIDE})}?Set(CALLTYPE=${CALLTYPE_OVERRIDE}))
exten => exten,n,Set(CALLEE=${DB(AMPUSER/${ARG2}/recording/in/${CALLTYPE})})
exten => exten,n,ExecIf($[!${LEN(${CALLEE})}]?Set(CALLEE=dontcare))
exten => exten,n,GotoIf($["${CALLTYPE}"="external"]?callee)
exten => exten,n,GotoIf($["${CALLEE}"="dontcare"]?caller)
exten => exten,n,ExecIf($[${LEN(${DB(AMPUSER/${FROMEXTEN}/recording/priority)})}]?Set(CALLER_PRI=${DB(AMPUSER/${FROMEXTEN}/recording/priority)}):Set(CALLER_PRI=0))
exten => exten,n,ExecIf($[${LEN(${DB(AMPUSER/${ARG2}/recording/priority)})}]?Set(CALLEE_PRI=${DB(AMPUSER/${ARG2}/recording/priority)}):Set(CALLEE_PRI=0))
exten => exten,n,GotoIf($["${CALLER_PRI}"="${CALLEE_PRI}"]?${REC_POLICY}:${IF($[${CALLER_PRI}>${CALLEE_PRI}]?caller:callee)})
exten => exten,n(callee),Gosub(recordcheck,1(${CALLEE},${CALLTYPE},${ARG2}))
exten => exten,n,Return()
exten => exten,n(caller),Set(RECMODE=${DB(AMPUSER/${FROMEXTEN}/recording/out/internal)})
exten => exten,n,ExecIf($[!${LEN(${RECMODE})}]?Set(RECMODE=dontcare))
exten => exten,n,ExecIf($["${RECMODE}"="dontcare"]?Set(RECMODE=${CALLEE}))
exten => exten,n,Gosub(recordcheck,1(${RECMODE},${CALLTYPE},${ARG2}))
exten => exten,n,Return()
exten => conf,1,Noop(Conference Recording Check ${FROMEXTEN} to ${ARG2})
exten => conf,n,Gosub(recconf,1(${ARG2},${ARG2},${ARG3}))
exten => conf,n,Return()

exten => page,1,Noop(Paging Recording Check ${FROMEXTEN} to ${ARG2})
exten => page,n,GosubIf($["${REC_POLICY_MODE}"="always"]?recconf,1(${ARG2},${FROMEXTEN},${ARG3}))
exten => page,n,Return()

exten => recconf,1,Noop(Setting up recording: ${ARG1}, ${ARG2}, ${ARG3})
exten => recconf,n,Set(__CALLFILENAME=${IF($[${CONFBRIDGE_INFO(parties,${ARG2})}]?${DB(RECCONF/${ARG2})}:${ARG1}-${ARG2}-${ARG3}-${TIMESTR}-${UNIQUEID})})
exten => recconf,n,ExecIf($[!${CONFBRIDGE_INFO(parties,${ARG2})}]?Set(DB(RECCONF/${ARG2})=${CALLFILENAME}))
exten => recconf,n,Set(CONFBRIDGE(bridge,record_file)=${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME}.${MON_FMT})
exten => recconf,n,ExecIf($["${ARG3}"!="always"]?Return())
exten => recconf,n,Set(CONFBRIDGE(bridge,record_conference)=yes)
exten => recconf,n,Set(__REC_STATUS=RECORDING)
exten => recconf,n,Set(CDR(recordingfile)=${IF($[${CONFBRIDGE_INFO(parties,${ARG2})}]?${CALLFILENAME}.${MON_FMT}:${CALLFILENAME}.${MON_FMT})})
exten => recconf,n,Noop(${MIXMONITOR_FILENAME})
exten => recconf,n,Set(CHANNEL(hangup_handler_push)=sub-record-hh-check,s,1)
exten => recconf,n,Return()

exten => recq,1,Noop(Setting up recording: ${ARG1}, ${ARG2}, ${ARG3})
exten => recq,n,Set(MONITOR_FILENAME=${MIXMON_DIR}${YEAR}/${MONTH}/${DAY}/${CALLFILENAME})
exten => recq,n,MixMonitor(${MONITOR_FILENAME}.${MON_FMT},${MONITOR_OPTIONS}${MIXMON_BEEP},${MIXMON_POST})
exten => recq,n,Set(__REC_STATUS=RECORDING)
exten => recq,n,Set(CDR(recordingfile)=${CALLFILENAME}.${MON_FMT})
exten => recq,n,Return()

exten => parking,1,Noop(User ${ARG2} picked up a parked call)
exten => parking,n,Set(USER=${ARG2})
exten => parking,n,ExecIf($[!${LEN(${ARG2})}]?Set(USER=unknown))
exten => parking,n,Set(RECMODE=${DB(AMPUSER/${ARG2}/recording/out/internal)})
exten => parking,n,ExecIf($[!${LEN(${RECMODE})}]?Set(RECMODE=dontcare))
exten => parking,n,Gosub(recordcheck,1(${RECMODE},parked,${USER}))
exten => parking,n,Return()

;--== end of [sub-record-check] ==--;