I trying to use ooma with asterisk for my home setup, so I have 2 lines assigned to the same number forwarded through FXO gateways into asterisk. Outbound calls seem to work fine, but on inbound I have issue - both lines ring at the same time so on my IP phone I see multiple inbound calls from the same number. What is the simplest way to make that 2 incoming look like 1 call?
I tried to use DEVICE_STATE() function:
[from-ooma1]
exten => s, 1, GotoIf($["${DEVICE_STATE(SIP/ooma2)}"="RINGING"]?hang)
same => n, Goto(incoming,s,1)
same => n(hang),Hangup()
[from-ooma2]
exten => s, 1, GotoIf($["${DEVICE_STATE(SIP/ooma1)}"="RINGING"]?hang)
same => n, Goto(incoming,s,1)
same => n(hang),Hangup()
so on ring on one line if another one is already ringing to drop it. Unfortunately this does not work, as DEVICE_STATE has only 2 states NOT_INUSE and INUSE (or I do not know how to make it to report RINGING state), and I cannot drop on "IN_USE" state.
Note: my subject maybe misleading, to clarify - I need to prevent two lines ringing at the same time, but when first line answered and still in use, second one should allows to pass incoming call.
You can count calls to any single entity by using function GROUP
[macro-stdvoip]
; ${ARG1} - full dial string
; Return ${DIALSTATUS} = CHANUNAVAIL if ${VOIPMAX} exceeded
exten => s,1,Set(GROUP()=trunkgroup1) ;Set Group
exten => s,2,GotoIf($[${GROUP_COUNT(trunkgroup1)} > ${VOIPMAX}]?103) ;Exceeded?
exten => s,3,Dial(${ARG1}) ;dial it
exten => s,103,SetVar(DIALSTATUS=CHANUNAVAIL) ;deny call