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In this section:

The Legacy Mobile Station Domain (LMSD) or 3GPP2 defines the Session Initiation Protocol (SIP) inter-working with CDMA network for IP based trunking between CDMA Mobile Switching Centers (MSC) to enable Transcoder Free Operations (TrFO). When SBC is not configured with tone profiles, inter-working of calls are accomplished by additional configurations. For more information on LMSD interworking, refer to LMSD Interworking without Tones.

Configuring on EMA

To configure LMSD interworking without tones on the EMA:

  1. Log on to the EMS SWe GUI. The following screen appears:

    EMS GUI Home Page

  2. On the navigation pane, select Element Management > SBX Manager.

  3. Select the registered SBC manager to configure.

  4. Select All > Address Context > Zone > SIP Trunk Group >Signaling.
    The Signaling page appears:

    Signaling

  5. Enable Stop Lmsd Tone On Update.
  6. Click Save.

Configuring on PSX

To configure LMSD interworking without tones on the PSX Manager:

  1. Log on to the EMS SWe GUI. The following screen appears:

    EMS GUI Home Page

  2. On the navigation pane, select Element Management > PSX Manager. 

  3. Select the registered Master PSX.
    The PSX Manager screen appears.

  4. Select the IP Signaling Profile from the Entity drop-down menu.
    The IP Signaling Profiles are listed.

  5. Select the Default_LMSD profile.

    On bottom-left corner of the screen, click New to create a new profile and enter a name for IP Signaling Profile.

    IP Signaling Profile

  6. Select Accept Alert Info check box.
  7. Click Save.

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