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    Doubts regarding VoIP system

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    • H
      Himura1
      last edited by

      Hello ML. My first post here. I'm based out of India.

      Have a doubt regarding Voip system. Client has an single PRI line and a Siemens PABX system. Currently internal calls are charged by the telco. They would want to cut down this cost, hence exploring Voip for communications.

      If an IP PBX like Asterisk/Freepbx is used along with IP Phones, would internal calls still be charged? I'm confused on this part since I would still be assigning the DID numbers from the PRI lines to the extensions.

      scottalanmillerS 3 Replies Last reply Reply Quote 3
      • Deleted74295D
        Deleted74295 Banned
        last edited by

        When 2 VoIP phones on the same system call each other directly, it is pure data, same as sending emails or transferring files. So if you are calling phones inside your network (whether it be in the same building or not) there should not be a charge for this.

        The exception to this is when you convert the VoIP to call a phone number which means it leaves your network and goes to a telephone exchange, this is where you incur costs.

        This is a basic approximation of what happens.

        1 Reply Last reply Reply Quote 2
        • scottalanmillerS
          scottalanmiller @Himura1
          last edited by

          @Himura1 said in Doubts regarding VoIP system:

          Hello ML. My first post here. I'm based out of India.

          Welcome to the MangoLassi community!

          1 Reply Last reply Reply Quote 0
          • scottalanmillerS
            scottalanmiller @Himura1
            last edited by

            @Himura1 said in Doubts regarding VoIP system:

            If an IP PBX like Asterisk/Freepbx is used along with IP Phones, would internal calls still be charged? I'm confused on this part since I would still be assigning the DID numbers from the PRI lines to the extensions.

            No, even on normal legacy systems internal calls are not charged. The old Siemens system there is probably not a true PBX, as normally internal calls can't be seen by the telco.

            With FreePBX or any VoIP PBX, the internal calls are internal only, no way for any outside entity to even know that they are happening. They are definitely free.

            1 Reply Last reply Reply Quote 3
            • scottalanmillerS
              scottalanmiller @Himura1
              last edited by

              @Himura1 said in Doubts regarding VoIP system:

              I'm confused on this part since I would still be assigning the DID numbers from the PRI lines to the extensions.

              But you do not need to dial the DID to call them internally. And if you do, you'd make the PBX connect you directly, not call out over the PRI just to receive the call over the same PRI.

              1 Reply Last reply Reply Quote 0
              • H
                Himura1
                last edited by Himura1

                Thanks @scottalanmiller and @Breffni-Potter for the clarification.

                @scottalanmiller Could Indian telcos use any specific tool/technology to monitor internal calls? Or is it something impossible?

                Current PABX is Siemens Hipath 3550. Is this a proper one?

                scottalanmillerS 2 Replies Last reply Reply Quote 0
                • scottalanmillerS
                  scottalanmiller @Himura1
                  last edited by

                  @Himura1 said in Doubts regarding VoIP system:

                  @scottalanmiller Could Indian telcos use any specific tool/technology to monitor internal calls? Or is it something impossible?

                  It's impossible. No different from them not being able to charge you for talking to people in the office in person. It's not part of the phone system, it doesn't leave the building, it's totally private and owned by you.

                  1 Reply Last reply Reply Quote 1
                  • scottalanmillerS
                    scottalanmiller @Himura1
                    last edited by

                    @Himura1 said in Doubts regarding VoIP system:

                    Siemens Hipath 3550

                    You sure that that is a PBX and not a gateway?

                    https://www.cnet.com/products/siemens-hipath-3550-v8-voip-gateway/specs/

                    No PBX will have the issue that you describe, something is very wrong if your telco has any means of seeing your calls, even on a 50 year old PBX. Either they have access into your facilities that they should not have, or your calls are leaving the building without being handled by your PBX, or you have the device shown and you have no PBX.

                    H 2 Replies Last reply Reply Quote 2
                    • H
                      Himura1 @scottalanmiller
                      last edited by

                      @scottalanmiller said in Doubts regarding VoIP system:

                      @Himura1 said in Doubts regarding VoIP system:

                      Siemens Hipath 3550

                      You sure that that is a PBX and not a gateway?

                      https://www.cnet.com/products/siemens-hipath-3550-v8-voip-gateway/specs/

                      No PBX will have the issue that you describe, something is very wrong if your telco has any means of seeing your calls, even on a 50 year old PBX. Either they have access into your facilities that they should not have, or your calls are leaving the building without being handled by your PBX, or you have the device shown and you have no PBX.

                      I haven't visited the client site yet scott, all this information is gathered through phone conversation with the prospect.
                      I will be visiting them tomorrow. I would need to identify if its an PBX in the first place!

                      scottalanmillerS 1 Reply Last reply Reply Quote 0
                      • scottalanmillerS
                        scottalanmiller @Himura1
                        last edited by

                        @Himura1 said in Doubts regarding VoIP system:

                        @scottalanmiller said in Doubts regarding VoIP system:

                        @Himura1 said in Doubts regarding VoIP system:

                        Siemens Hipath 3550

                        You sure that that is a PBX and not a gateway?

                        https://www.cnet.com/products/siemens-hipath-3550-v8-voip-gateway/specs/

                        No PBX will have the issue that you describe, something is very wrong if your telco has any means of seeing your calls, even on a 50 year old PBX. Either they have access into your facilities that they should not have, or your calls are leaving the building without being handled by your PBX, or you have the device shown and you have no PBX.

                        I haven't visited the client site yet scott, all this information is gathered through phone conversation with the prospect.
                        I will be visiting them tomorrow. I would need to identify if its an PBX in the first place!

                        Ah ha. You can assume that it is not, then. A PBX would make what is happening impossible (unless it was completely screwed up and not set to work as a PBX) so pretty safe to assume that the actual switching is being handled by the telco.

                        1 Reply Last reply Reply Quote 1
                        • H
                          Himura1 @scottalanmiller
                          last edited by

                          @scottalanmiller said in Doubts regarding VoIP system:

                          @Himura1 said in Doubts regarding VoIP system:

                          Siemens Hipath 3550

                          You sure that that is a PBX and not a gateway?

                          What would be the function of gateway? How is it different from a PBX?

                          scottalanmillerS 1 Reply Last reply Reply Quote 0
                          • scottalanmillerS
                            scottalanmiller @Himura1
                            last edited by

                            @Himura1 said in Doubts regarding VoIP system:

                            @scottalanmiller said in Doubts regarding VoIP system:

                            @Himura1 said in Doubts regarding VoIP system:

                            Siemens Hipath 3550

                            You sure that that is a PBX and not a gateway?

                            What would be the function of gateway? How is it different from a PBX?

                            Different in every way. A PBX is a switch and does not imply a connection to the outside world. A PBX is how you switch calls between extensions or trunks. You can put in a PBX and put extensions on desks and people can call each other. Same as having an Ethernet switch and computers on desks and people can send files to each other. Neither requires an outside line.

                            A gateway like this is for converting VoIP on one side to a telco line on the other - they should not exist in the modern world because things like POTS and PRI "should" have all been replaced decades ago. But many companies keep these old, expensive vestiges. A gateway takes internal calls and hands them directly to the phone company, just like your Internet gateway does.

                            So...

                            PBX: No way for the telco to see internal calls.
                            Gateway: No such thing as internal calls.

                            triple9T 1 Reply Last reply Reply Quote 0
                            • triple9T
                              triple9 @scottalanmiller
                              last edited by

                              @scottalanmiller Siemens HiPath 3550 is a telephone system, as they call it, and basically it is PBX.
                              The only way telco could charge for internal calls would be to rent PBX to customer and charge it as part of service.

                              DustinB3403D 1 Reply Last reply Reply Quote 0
                              • DustinB3403D
                                DustinB3403 @triple9
                                last edited by

                                @triple9 said in Doubts regarding VoIP system:

                                @scottalanmiller Siemens HiPath 3550 is a telephone system, as they call it, and basically it is PBX.
                                The only way telco could charge for internal calls would be to rent PBX to customer and charge it as part of service.

                                The issue that exist is that the service provider shouldn't be able to see extension to extension calling.

                                Only inbound or external calls should be visible.

                                @scottalanmiller it is a PBX, a really old one.

                                scottalanmillerS 1 Reply Last reply Reply Quote 0
                                • scottalanmillerS
                                  scottalanmiller @DustinB3403
                                  last edited by

                                  @DustinB3403 said in Doubts regarding VoIP system:

                                  @triple9 said in Doubts regarding VoIP system:

                                  @scottalanmiller Siemens HiPath 3550 is a telephone system, as they call it, and basically it is PBX.
                                  The only way telco could charge for internal calls would be to rent PBX to customer and charge it as part of service.

                                  The issue that exist is that the service provider shouldn't be able to see extension to extension calling.

                                  Only inbound or external calls should be visible.

                                  @scottalanmiller it is a PBX, a really old one.

                                  The device that I linked was not a PBX. If you search on that name, several totally different items come up.

                                  1 Reply Last reply Reply Quote 0
                                  • DashrenderD
                                    Dashrender
                                    last edited by

                                    If it's a hosted/rented system, the vendor will have access to see inside the system and can therefore charge based on internal calls.

                                    1 Reply Last reply Reply Quote 0
                                    • JaredBuschJ
                                      JaredBusch
                                      last edited by JaredBusch

                                      If the users are calling a DID instead of an extension, then of course the provider sees it and charges for it.

                                      Sounds like the system is either misconfigured or the users were incorrectly instructed.

                                      DashrenderD 1 Reply Last reply Reply Quote 3
                                      • DashrenderD
                                        Dashrender @JaredBusch
                                        last edited by

                                        @JaredBusch said in Doubts regarding VoIP system:

                                        If the users are calling a DID instead of an extension, then of course the provider sees it and charges for it.

                                        Sounds like the system is either misconfigured or the users were incorrectly instructed.

                                        i was wondering this.

                                        1 Reply Last reply Reply Quote 0
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