DTMF Issues

Discussion in 'iOS' started by joebocop, Feb 5, 2015.

Thread Status:
Not open for further replies.
  1. joebocop

    Joined:
    Dec 12, 2013
    Messages:
    96
    Likes Received:
    0
    We have 3CX Phone System v12, and several Android (v5) and iOS (v8) extensions, as well as desk phones (Yealink T46G and T42G). Our system has a PSTN gateway (Patton SN4316) and a VoIP trunk provided by IrisTel.

    We are seeing that the iOS clients can not navigate IVRs over the PSTN (pressing keys does not navigate menus successfully). Only iOS clients fail, and only over the PSTN. iOS clients can navigate IVRs if they dial out using the VoIP trunk. All Android and deskphones can navigate IVRs over PSTN or Voip trunk.

    Is this is Patton issue, or a 3CX issue?
     
  2. Vali_3CX

    Vali_3CX Well-Known Member
    Staff Member 3CX Support

    Joined:
    Dec 12, 2008
    Messages:
    1,477
    Likes Received:
    67
    Hi Joe
    The DTMF type sent by the phone should match one accepted/recognized by the PBX. By default, 3CXPhone for iOS uses RFC2833. You tried any of the two others (in band/sipinfo)? 3CXPhone for Android and deskphones uses the same type as the iOS version?
    Is important to know these details to understand where the issue is.
    Thanks
    vali
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. leejor

    leejor Well-Known Member

    Joined:
    Jan 22, 2008
    Messages:
    10,586
    Likes Received:
    252
    The PBX can recognize just about anything you can "throw at it", within limits (and licensing), of course.
    In the case of a PSTN gateway (your case), the DTMF type used in the phone should match that set in the gateway, as the gateway repeats (generates) the DTMF tones (based on the SIP message type),to be sent out on the phone line.
     
Thread Status:
Not open for further replies.