USSD on a Sierra Wireless

[Vincent Bernat]

Hi!

I am using this modem:

Bus 002 Device 008: ID 1199:a001 Sierra Wireless, Inc. 

With cdc_mbim from Linux 3.16 and ModemManager 1.2.0 from Debian.

/org/freedesktop/ModemManager1/Modem/2 (device id 'c5ce720922fa41226173f15025ceffaf393163fb')
  -------------------------
  Hardware |   manufacturer: 'Generic'
           |          model: 'MBIM [1199:A001]'
           |       revision: 'FIH7160_V1.1_MODEM_01.1349.12'
           |      supported: 'gsm-umts, lte'
           |        current: 'gsm-umts, lte'
           |   equipment id: 'XXXXXXXXXXXXXXXXX'
  -------------------------
  System   |         device: '/sys/devices/pci0000:00/0000:00:14.0/usb2/2-4'
           |        drivers: 'cdc_mbim'
           |         plugin: 'Generic'
           |   primary port: 'cdc-wdm1'
           |          ports: 'wwan0 (net), cdc-wdm1 (mbim)'
  -------------------------
  Numbers  |           own : 'unknown'
  -------------------------
  Status   |           lock: 'none'
           | unlock retries: 'sim-pin (3)'
           |          state: 'registered'
           |    power state: 'on'
           |    access tech: 'gprs'
           | signal quality: '74' (cached)
  -------------------------
  Modes    |      supported: 'allowed: 2g, 3g, 4g; preferred: none'
           |        current: 'allowed: 2g, 3g, 4g; preferred: none'
  -------------------------
  Bands    |      supported: 'unknown'
           |        current: 'unknown'
  -------------------------
  IP       |      supported: 'ipv4, ipv6, ipv4v6'
  -------------------------
  3GPP     |           imei: 'XXXXXXXXXXXXXXX'
           |  enabled locks: 'fixed-dialing'
           |    operator id: '20810'
           |  operator name: 'F SFR'
           |   subscription: 'provisioned'
           |   registration: 'roaming'
  -------------------------
  SIM      |           path: '/org/freedesktop/ModemManager1/SIM/1'

  -------------------------
  Bearers  |          paths: 'none'

I am trying to access USSD information, but:

$ mmcli -m 2 --3gpp-ussd-initiate='*101#'
error: modem has no USSD capabilities

If I stop ModemManager and look directly with mbimcli, I see that:

[/dev/cdc-wdm1] Device capabilities retrieved:
              Device type: 'embedded'
           Cellular class: 'gsm'
              Voice class: 'no-voice'
                Sim class: 'removable'
               Data class: 'gprs, edge, umts, hsdpa, hsupa, lte'
                 SMS caps: 'pdu-receive, pdu-send'
                Ctrl caps: 'reg-manual'
             Max sessions: '8'
        Custom data class: 'unknown'
                Device ID: '013937000980829'
            Firmware info: 'FIH7160_V1.1_MODEM_01.1349.12'
            Hardware info: 'XMM7160_V1.1_MBIM_GNSS_NAND_RE'

[/dev/cdc-wdm1] Device services retrieved:
        Max DSS sessions: '0'
                Services: (14)

                          Service: 'basic-connect'
                             UUID: [a289cc33-bcbb-8b4f-b6b0-133ec2aae6df]:
                      DSS payload: 0
                Max DSS instances: 0
                             CIDs: device-caps (1),
                                   subscriber-ready-status (2),
                                   radio-state (3),
                                   pin (4),
                                   pin-list (5),
                                   register-state (9),
                                   home-provider (6),
                                   signal-state (11),
                                   visible-providers (8),
                                   preferred-providers (7),
                                   network-idle-hint (21),
                                   packet-service (10),
                                   ip-configuration (15),
                                   connect (12),
                                   device-services (16),
                                   device-service-subscribe-list (19),
                                   ip-packet-filters (23),
                                   provisioned-contexts (13)

                          Service: 'sms'
                             UUID: [533fbeeb-14fe-4467-9f90-33a223e56c3f]:
                      DSS payload: 0
                Max DSS instances: 0
                             CIDs: configuration (1),
                                   read (2),
                                   send (3),
                                   delete (4),
                                   message-store-status (5)

                          Service: 'ussd'
                             UUID: [e550a0c8-5e82-479e-82f7-10abf4c3351f]:
                      DSS payload: 0
                Max DSS instances: 0
                             CIDs: ussd (1)

There are other services. So, should USSD be available with this modem
or not?

Thanks!
-- 
Make it clear before you make it faster.
            - The Elements of Programming Style (Kernighan & Plauger)