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In case of multiple Trunk that have to work in failover style, you need some more advanced setup.
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SIP trunks within a failover group are ordered by name: this same order is used to route calls. If the first SIP trunks is not available, the next one in the ordered list is used.
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Following configuration involves remote console commands to be run as root and it can easily damage your
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[trunk-failover]
exten => _[+0-9]X.,1,Verbose(Failover group)
same => n,Set(PREV_CHAN=${canale})
same => n(__trunk_ffefd2c02f46993e),Verbose(Trying to dial using trunk "Trunk 10" __trunk_ffefd2c02f46993e)
same => n,Set(NETWORKSTATUS=${SIPPEER(__trunk_ffefd2c02f46993e,status)})
same => n,Gotoif($["${NETWORKSTATUS}"="UNREACHABLE"]?__trunk_616683993964bc16:)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=__trunk_ffefd2c02f46993e)
same => n,Dial(SIP/__trunk_ffefd2c02f46993e/${EXTEN})
same => n,Hangup()
same => n(__trunk_616683993964bc16),Verbose(Trying to dial using trunk "Trunk 11" __trunk_616683993964bc16)
same => n,Set(NETWORKSTATUS=${SIPPEER(__trunk_616683993964bc16,status)})
same => n,Gotoif($["${NETWORKSTATUS}"="UNREACHABLE"]?__trunk_d346973491bc1df3:)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=__trunk_616683993964bc16)
same => n,Dial(SIP/__trunk_616683993964bc16/${EXTEN})
same => n,Hangup()
same => n(last),Verbose(No trunk reachable)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=FAILOVER_FAILED)
same => n,Hangup()
[trunk-failover-2]
exten => _[+0-9]X.,1,Verbose(Failover group)
same => n,Set(PREV_CHAN=${canale})
same => n(__trunk_d346973491bc1df3),Verbose(Trying to dial using trunk "Trunk 12" __trunk_d346973491bc1df3)
same => n,Set(NETWORKSTATUS=${SIPPEER(__trunk_d346973491bc1df3,status)})
same => n,Gotoif($["${NETWORKSTATUS}"="UNREACHABLE"]?__trunk_6fd24f043acea450:)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=__trunk_d346973491bc1df3)
same => n,Dial(SIP/__trunk_d346973491bc1df3/${EXTEN})
same => n,Hangup()
same => n(__trunk_6fd24f043acea450),Verbose(Trying to dial using trunk "Trunk 13" __trunk_6fd24f043acea450)
same => n,Set(NETWORKSTATUS=${SIPPEER(__trunk_6fd24f043acea450,status)})
same => n,Gotoif($["${NETWORKSTATUS}"="UNREACHABLE"]?__trunk_27f415d6fb6346c0:)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=__trunk_6fd24f043acea450)
same => n,Dial(SIP/__trunk_6fd24f043acea450/${EXTEN})
same => n,Hangup()
same => n(last),Verbose(No trunk reachable)
same => n,Set(SHARED(Sip_Trunk,${PREV_CHAN})=FAILOVER_FAILED)
same => n,Hangup() |
You can notice that we have one block two blocks of code for each configured Trunkfailover group. In this case we are using 4 Trunks named:
- FAILOVER GROUP 1
- Trunk 10
- Trunk 11
- FAILOVER GROUP 2
- Trunk 12
- Trunk 13
You have to copy page content and keep it somewhere handy.
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Once you filled in the proper values, just press Create button to add your new Dialling Rule.
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Please be aware that if you need an exact match for a dialed number, then you have to write the number itself trailed by the ! character. E.G: to match number 123456 and just it, you need to write it into "Prefix" textbox as follows: 123456! |
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In case you need one rule as a subset of a more generic one, then you must write down the prefix of the more generic one trailed by an X . E.G: we have one prefix 071 to route calls by one trunk trunk_1, but we need the prefix 0715 to be routed by another trunk named trunk_02 . Then we need to set one first dialing rule for trunk_1 using prefix 071X and a second one for trunk_2 using prefix 0715 .
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