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    FXO stays in off-hook state

    Leonardo

      Hello guys,

           I have a basic set up with 4 PSTN lines connected to a FXO Card  in a 2811 Router. Whenever a call comes in on a line, the FXO sends it to the basic call attendant running on same router (BACD), which then sends the call to a hunt group base on the users choice from the menu. The problem i am having is this, if i call then hang up after hearing the menu, the FXO port stays in a off-hook state forever, unless i shut it down and bring it back up, which produces a busy signal for the next caller. Anybody experience this before and know a possible solution? thanks

        • 1. Re: FXO stays in off-hook state
          Brian

          Just had a similar issue. Site has a 2801 with 4 FXO. POTS lines are in a Hunt Group on the Telco side. Everything points the the Front Desk phone extension. Front desk answers then transfers to the intended caller. Or so we thought. They were actually taking the inbound call and transferring it to the persons cell phone. That did two things, first off it locked up two POTS lines while the call was active, but in this case did the same thing you are experiencing. It locked the two ports in an off-hook status even after the call was disconnected. Only fix was to shut/no shut the ports. TAC worked on it for a few days. Even created a custom disconnect tone setup for us. Nothing worked. Eventually we just told the site not to transfer off net and to instead transfer to the recipient's voicemail.

           

          I'm not an expert on it but I think what it was in our case was that the router wasn't relaying the signal from one line to the next. Your issue sounds like it never goes anywhere, but actually stays on the router. In that case I would try to contact the Telco and see if there is anything they can change for disconnect on your POTS lines. Our Telco said no, but our Account Rep. got them to do it   Also, you could try looking into "Supervisory Disconnect". This is all assuming that when you call this same thing from an internal number everything disconnects as expected.

          • 2. Re: FXO stays in off-hook state
            Leonardo

            Brian, i found out what was happening. The cisco BACD menu is looped 4 times by default, since i wanted the menu to play 4 times i didn't bother to set a value, but i realise that the menu was looping forever instead of 4 times.

             

            So the call comes in --> FXO PLARs to the pilot number of the aa --> aa plays welcome and menu to caller --> Caller Hangs up --> in status of FXO change to idle and Out status stays off-hook --> aa plays menu forever at 20 seconds intervals --> FXO out status remains in off-hook as long as the aa is playing the menu and incomes call to same port will get busy tone.

             

            Solution: I am not sure if there are other ways of solving this issue but this is whats working for me. I set the menu-timeout value at 1, so now the menu is only played twice, then the call disconnects, even if the user hangs up. Which intern returns the port to on-hook state.

             

            So the call comes in --> FXO PLARs to the pilot number of the aa --> aa plays welcome and menu to caller --> Caller Hangs up --> in status of FXO change to idle and Out status change to off-hook --> aa plays menu another time, if there is no choice by user, then call disconnects --> FXO out status change to on-hook --> next caller on same port gets ringing tone.

             

            I hope to find a better solution soon as this is not the best one because in this case the line is tied up for at least 1 minute every time a user hangs up without choosing a menu option.

            • 3. Re: FXO stays in off-hook state
              filo

              hi,

               

              I have similar problem. In my case the fxo ports stay off-hook after setting a conference (1 party internal, the others 2 pstn).

              I have also BACD configured and voice card VWIC2-4FX0 CME 7.1

               

              I haven´t found a solution yet.

               

              I hope any of you can help me.

               

              regards

              • 4. Re: FXO stays in off-hook state
                womble stomper

                This sounds like it could be related to a known problem with FXO ports and disconnectiondepending on where the call in starting from

                 

                More information can be found at the following link below - it also gives ideas of how to get around the problem.

                 

                http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

                • 5. Re: FXO stays in off-hook state
                  Vikrant

                  We have Same issue, Is this solved ?

                   

                  Can you Please post solution if anyone know this

                  • 6. Re: FXO stays in off-hook state
                    filo

                    Hi Vikrant,

                     

                    Unfortunately I did not find any solution that solved this issue. I had to suggest to move to digital trunks, of course no more problems.

                    Maybe you can try the option as Brian suggests, talk with your Telco and ask to change what is necessary on its side in order to avoid the port stay in off-hook state.

                     

                    regards

                    • 7. Re: FXO stays in off-hook state
                      Paul Stewart  -  CCIE Security

                      I wonder if some type of supervisory disconnect between the fxo and telco could rectify the issue.

                      • 8. Re: FXO stays in off-hook state
                        Vikrant

                        Ok I will ask,

                         

                        But Please look on my config & please let me know if anything wrong

                        voice-port 0/1/0
                        supervisory disconnect dualtone mid-call
                        no battery-reversal
                        output attenuation -6
                        cptone AU
                        timeouts call-disconnect 3
                        timeouts wait-release 3
                        timing sup-disconnect 300
                        connection plar opx 204
                        impedance complex1
                        caller-id enable
                        !
                        voice-port 0/1/1
                        supervisory disconnect dualtone mid-call
                        no battery-reversal
                        output attenuation -6
                        cptone AU
                        timeouts call-disconnect 3
                        timeouts wait-release 3
                        timing sup-disconnect 300
                        connection plar opx 206
                        impedance complex1
                        caller-id enable
                        !
                        ephone-dn  13  dual-line
                        number 204 no-reg primary
                        label 204
                        description Lindsay Clark
                        name Lindsay Clark
                        call-forward busy 400
                        call-forward noan 400 timeout 10
                        !
                        !
                        ephone-dn  15  dual-line
                        number 206 no-reg primary
                        label 206
                        description Lindsay Clark
                        name Lindsay Clark
                        call-forward busy 202
                        call-forward noan 00411069447 timeout 10

                        !

                        If I pickup call on 206 that time All is going well but if doesn't pickup call on 206 then it forward to my mobile. But after Hang up running call, it's doesn't disconnect (As in a call comes in and is then not disconnected on completion) & I found both voice-port (Voice-port 0/1/0 ) & (Voice-port 0/1/1 ) is showing engaged(busy) & Off-hook.

                        it's showing off-hook until reset both voice ports

                         

                        It was working from last year, But having issue from last week, One more thing i didn't change anything on router

                        • 9. Re: FXO stays in off-hook state
                          Brian

                          Aloha Leonardo,

                           

                          Do you have the following configured on the voice ports, "no battery-reversal"?

                           

                          Try enabling with "battery-reversal".

                           

                          Checkout the following document.

                           

                          http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

                           

                          HTH

                           

                          • 10. Re: FXO stays in off-hook state
                            Brian

                            I'm in agreement with Brian. I had originally gone through what the document he posted suggests.

                            • 11. Re: FXO stays in off-hook state
                              Vikrant

                              Hi Brian,

                               

                              I tried enabling with "battery-reversal".  but this time after disconnecting running call means Hung up the phone & make call again on same no. Voice-port 0/1/1 that time I found both voice-port (Voice-port 0/1/0 ) & (Voice-port 0/1/1 ) is showing engaged(busy) & Off-hook.

                              As in a call comes in and is then not disconnected on completion.  The LED light stays on, on the UC520, need to see if it is possible to work out why the calls remain active

                              • 12. Re: FXO stays in off-hook state
                                J_Vansen_S

                                anyone got this working?

                                I am having the exact same issue.

                                Incoming calls to AA, kept ringing at the operator. Even when the caller has already hang up.

                                we have already checked with telco, and they have provided the busy tone freq and cadence but it still did not work

                                 

                                any advise appreciated.

                                • 13. Re: FXO stays in off-hook state
                                  filo

                                  Hi  Vansen, For analog ports in my case the following config clear  the problem. in addition try with the newest IOS version voice-port 1/0/X supervisory disconnect dualtone mid-call cptone MX --->your country timeouts call-disconnect 5 timeouts wait-release 5 regards

                                  • 14. Re: FXO stays in off-hook state
                                    tedeschi1

                                    Is this a MGCP gateway?

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