test.js

this._handler = (context) => {
            console.log('hello, AGI');
            context.onEvent('variables')
                .then((vars) => {
                    console.log('Agi vars: ', vars);
                    // console.log(this.currentCall.a)
                    console.log(vars.agi_callerid)
                    if ((this.currentCall.a == vars.agi_callerid) && (this.currentCall.b == vars.agi_dnid)) {
                        this.currentCall.chanB = vars.agi_channel;
                        this.currentCall.timer = setTimeout(
                            () => context.answer(),
                            this._getRandom(this.answerWait.from, this.answerWait.to)
                        );
                        // return context.answer()
                        return context
                    }
                    return context.hangup()

                })

                .then((vars) => {
                    return context.playback(this.soundB)

                })

                .then((result) => {

                    return context.end();
                });
        };