Multi Providers Dialplan Context

multi-providers.ael

context multi-provider {
  _X. => {
    if (${GLOBAL(provider_1_limit)} > ${GLOBAL(provider_1_count)}) {
      Set(PROVIDER_CONTEXT=provider_1);
    }
    else if (${GLOBAL(provider_2_limit)} > ${GLOBAL(provider_2_count)}) {
      Set(PROVIDER_CONTEXT=provider_2);
    }
    else {
      Congestion();
    }
    GLOBAL(${PROVIDER_CONTEXT}_count)=GLOBAL(${PROVIDER_CONTEXT}_count)+1;
    Dial(SIP/${PROVIDER_CONTEXT}/${EXTEN});
    Congestion();
  };
  h => {
    // we could be handling from congestion
    if (${GLOBAL(${PROVIDER_CONTEXT}_count)} > 0) {
      GLOBAL(${PROVIDER_CONTEXT}_count)=GLOBAL(${PROVIDER_CONTEXT}_count)-1;
    }
  }
}