[arch-general] UMTS with Networkmanager

[Silvio Siefke]

Hello,

i has installed Arch Linux today first time. Without problems but one 
thing make me trouble. I need UMTS Connection for Internet and thats
with my Mobile or Huawei USB. I has follow the wiki articles, but 
want not work. When i understand systemd Log correct then the 
System know my Mobile, but with NetworkManager want not work.

Log:
[root at archmobile ~]# dmesg | tail
[ 1079.250828] option 3-6:1.1: device disconnected
[ 1079.253386] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 1079.253452] option 3-6:1.2: device disconnected
[ 1079.255945] option1 ttyUSB3: option_instat_callback: error -108
[ 1079.256302] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 1079.256363] option 3-6:1.3: device disconnected
[ 1079.256735] qmi_wwan 3-6:1.4 wwp0s29f7u6i4: unregister 'qmi_wwan' usb-0000:00:1d.7-6, WWAN/QMI device
[ 1088.376702] usb 3-6: new high-speed USB device number 18 using ehci-pci
[ 1088.507048] cdc_acm 3-6:1.1: ttyACM0: USB ACM device
[ 1088.509572] cdc_acm 3-6:1.3: ttyACM1: USB ACM device

[root at archmobile ~]# lsusb
Bus 003 Device 003: ID 0ac8:c326 Z-Star Microelectronics Corp. Namuga 1.3M Webcam
Bus 003 Device 018: ID 0421:0223 Nokia Mobile Phones

Can someone give me a advice why the NetworkManager not want use, or Arch not
want use. 

Thanks for help & Greetings
Silvio