Visual Voicemail Server

Supports GSMA TS.46 for Visual Voicemail

Activating on Android

From ADB we need to enable the VVM related keys:

adb shell
su
adb shell cmd phone cc set-value vvm_destination_number_string "123"
adb shell cmd phone cc set-value vvm_ssl_enabled_bool false
adb shell cmd phone cc set-value vvm_type_string "vvm_type_omtp"

Your Android Carrier config should look like:

vvm_cellular_data_required_bool                                        BOOLEAN         false
vvm_client_prefix_string                                               STRING          "//VVM"
vvm_destination_number_string                                          STRING          "123"
vvm_disabled_capabilities_string_array                                 STRING_ARRAY    null
vvm_legacy_mode_enabled_bool                                           BOOLEAN         false
vvm_port_number_int                                                    INT             0
vvm_prefetch_bool                                                      BOOLEAN         true
vvm_ssl_enabled_bool                                                   BOOLEAN         false
vvm_type_string                                                        STRING          "vvm_type_omtp"

Android logcat should include something like:

TUI$VVM.VisualVmProtocol: startActivation requestVvmActivation
09-25 09:41:33.927  1503  1751 D RemoteVvmTaskManager: getRemotePackage - pkg : com.samsung.android.dialer
09-25 09:41:33.927  1503  1751 D RemoteVvmTaskManager: getRemotePackage - pkg : 
09-25 09:41:33.927  1503  1751 D RemoteVvmTaskManager: getRemotePackage - pkg : 
09-25 09:41:33.928  1503  1751 D RemoteVvmTaskManager: getRemotePackage - pkg : com.samsung.android.dialer
09-25 09:41:33.928  1503  1751 D RemoteVvmTaskManager: getRemotePackage - pkg : com.samsung.android.app.telephonyui
09-25 09:41:33.928  1503  1751 D RemoteVvmTaskManager: componentInfo.packageName : com.samsung.android.app.telephonyui componentInfo.name com.android.voicemail.impl.OmtpService
09-25 09:41:33.929  1503  1751 D VisualVoicemailSmsFilterConfig: getActiveVisualVoicemailSmsFilterSettings - packageName:com.samsung.android.app.telephonyui, subId:4
09-25 09:41:33.929  1503  1751 D VisualVoicemailSmsFilterConfig: getVisualVoicemailSmsFilterSettings - enabled_key:true, packageName:com.samsung.android.app.telephonyui, subId:4
09-25 09:41:33.929  1503  1751 D Settings: GET name: multi_sim_sms, value: 4, callingPackage: com.android.phone (Cached)
09-25 09:41:33.930  1503  1751 D Settings: GET name: multi_sim_sms, value: 4, callingPackage: com.android.phone (Cached)
09-25 09:41:33.931  1503  1751 I VvmSmsFilter: VVM SMS received
09-25 09:41:33.932  1503  1751 D TP/SmsProvider: delete, uri=content://sms/raw, calling pid = 1503
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: telephonyConfig is null
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: vvmType = vvm_type_omtp
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: isTmoMpcsCarrierPackage() : false
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: isTmoMpcsCarrierPackage() : false
09-25 09:41:34.004 12582 12582 I UT.SimInfo: isSimOperator(313380)
09-25 09:41:34.004 12582 12582 V UT.SimInfo: FRANCE_ORANGE.isInsertedSim[slot0] isInsertedSim = false
09-25 09:41:34.004 12582 12582 I UT.SimInfo: isSimOperator(313380)
09-25 09:41:34.004 12582 12582 V UT.SimInfo: BELGIUM_ORANGE.isInsertedSim[slot0] isInsertedSim = false
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: getCarrierVvmPackageNames() : bundle is null
09-25 09:41:34.004 12582 12582 I OmtpVvmCarrierCfgHlpr: getCarrierVvmPackageNamesWithoutValidation : case 2 = {}
09-25 09:41:34.005 12582 12582 I OmtpVvmCarrierCfgHlpr: isCarrierAppInstalled() : false
09-25 09:41:34.005 12582 12582 I OmtpVvmCarrierCfgHlpr: isEnabledByDefault() : true

You should then see an SMS sent by the phone to the vvm_destination_number_string:

*************************** 7. row ***************************
            message_id: 253
             send_time: 2023-09-25 09:28:38
          deliver_time: NULL
               expires: 2023-09-26 09:28:38
            deadletter: NULL
         source_msisdn: 19078720155
destinatination_msisdn: 6666123
          message_body: Activate:pv=11;ct=samsung.SM-A536E.13

This tells us the SM-A536E wants to activate VVM supporting version 1.1 of the protocol.

Now we send the SMS STATUS message to inform the device it's provisioned, this puts the credentials into the UE to access, etc.

Now you should start seeing IMAP traffic.

Activating on Android​

Activating on Android