Adobe provides sample dial-in sequences for well-known Audio Providers as part of configuring Universal Voice. 

Solution

Adobe updates the list when necessary. Below are sample dial-in sequences for Premiere NA, Meeting Place, Verizon, InterCall, BT and ATT. 

Premiere_NA:  

          <dial-in-sequence>

                <conf-num>{x-tel-premiere-conference-number}</conf-num>

                <delay>6000</delay>

                <dtmf>{x-tel-premiere-participant-code}</dtmf>

                <dtmf>#</dtmf>

                <delay>2000</delay>

                <dtmf>*#</dtmf>

          </dial-in-sequence>

MeetingPlace: 

          <dial-in-sequence>

                <conf-num>{x-tel-meetingPlace-conference-number}</conf-num>

                <delay>2000</delay>

                <dtmf>1</dtmf>

                <delay>500</delay>

                <dtmf>{Meeting-ID}</dtmf>

                <dtmf>#</dtmf>

                <delay>500</delay>

                <dtmf>{Meeting-Pwd}</dtmf>

                <dtmf>#</dtmf>

                <delay>2000</delay>

                <dtmf>#</dtmf>

          </dial-in-sequence> 

Verizon: 

        <dial-in-sequence>

                <conf-num>{x-tel-verizon-conference-number}</conf-num>

                <delay>6000</delay>

                <dtmf>{x-tel-verizon-participant-code}</dtmf>

                <dtmf>#</dtmf>

                <delay>14000</delay>

                <dtmf>#</dtmf>

                <delay>5000</delay>

        </dial-in-sequence>

 InterCall:  

         <dial-in-sequence>

                <conf-num>{x-tel-intercall-conference-number}</conf-num>

                <delay>6000</delay>

                <dtmf>{x-tel-intercall-participant-code}</dtmf>

                <dtmf>#</dtmf>

                <delay>4000</delay>

                <dtmf>#</dtmf>

                <delay>2000</delay>

                <dtmf>#</dtmf>

         </dial-in-sequence> 

BT:

           <dial-in-sequence>

                <conf-num>{x-tel-bt-conference-number}</conf-num>

                <delay>4000</delay>

                <dtmf>{x-tel-bt-participant-code}</dtmf>

                <dtmf>#</dtmf>

                <delay>6000</delay>

          </dial-in-sequence>

ATT: 

          <dial-in-sequence>

                <conf-num>{x-tel-att-conference-number}</conf-num>

                <delay>6000</delay>

                <dtmf>{x-tel-att-participant-code}</dtmf>

                <dtmf>#</dtmf>

                <delay>3000</delay>

                <dtmf>#</dtmf>

                <delay>8000</delay>

          </dial-in-sequence>