MC7710 and UMTS ?

[Aleksander Morgado]

On Thu, May 29, 2014 at 1:32 AM, reiner otto <augustus_meyer at yahoo.de> wrote:
> Hurrah, I managed to have the MC7710 up and running on my embedded debian.
> But only using GSM ;-(
> PING 8.8.8.8 takes about 1s average.
> Surfing the web is quite sloooooooooooow.
>
> Using the same SIM on a cheap ZTE USB-stick under WIndows is much faster,
> using UMTS.
> What I consider interesting:
>
> [/dev/cdc-wdm0] Successfully got system selection preference
>         Emergency mode: 'no'
>         Mode preference: 'cdma-1x, gsm'
>         Band preference: 'gsm-dcs-1800, gsm-900-extended, gsm-900-primary,
> gsm-pcs-1900, wcdma-2100, bc-15'
>         LTE band preference: '1, 3, 7, 8, 20'
>         Roaming preference: 'any'
>         Network selection preference: 'automatic'
>         Service domain preference: 'cs-ps'
>         Service selection preference: 'automatic'
> root at voyage:/etc/firewall#  qmicli -d /dev/cdc-wdm0
> --nas-set-system-selection-preference=umts
> error: couldn't set operating mode: QMI protocol error (25):
> 'DeviceUnsupported'
>
> BUT
>
> [/dev/cdc-wdm0] Device capabilities retrieved:
>         Max TX channel rate: '50000000'
>         Max RX channel rate: '100000000'
>                Data Service: 'simultaneous-cs-ps'
>                         SIM: 'supported'
>                    Networks: 'gsm, umts, lte'
>
> l# lsusb
> Bus 002 Device 002: ID 1199:68a2 Sierra Wireless, Inc.
> Using qmi_wwan.c from kernel 3.4.14
> (When I wrote device drivers in the very past, in various Assemblers, it was
> a good style to have a version number in the src, updated even in case some
> data structures were modifed only. And a modification history kept in the
> src etc. :-)
>
> Frequencies should be these:
> uplink: 1959,9 – 1969,8 MHz
> downlink: 2149,9 – 2159,8 MHz
>
> According to Mobile Provider, verified using USB-Modem Stick under WIndows
> GSM/UMTS/HSPA (3G/H/H+) is good at my place.
> Any idea, how to switch to umts ?


Have you tried --set-system-selection-preference="gsm|umts" ?

-- 
Aleksander
https://aleksander.es