After quite a bit of tweaking, I managed to get my Tenda 3G 611 R+ router working with my (debranded**) ex-Vodafone Huawei K3765 usb dongle with an 8Ta simcard in it on the 8Ta 10Gb for R199 per month deal.
** I used the Debranding (Permanent) method from this website [warning: this does invalidate the Vodafone guarantee on your dongle]:
http://3g-modem.wetpaint.com/page/Huawei+K3765-HV+(Vodafone)#fbid=CNkpq1wK0Jo
[also first read this mybroadband thread:
http://mybroadband.co.za/vb/showthread.php/347886-8ta-and-K3765-modem ]
The main settings for my 8ta simcard / Huawei dongle / Tenda router combination are:
WAN MEDIUM
3G Wan enabled
Network Settings:
ISP: OTHER
Pin Code: *leave blank*
Access Point Name (APN): internet
Dial: *99#
Advanced PPP Settings:
Username: *leave blank*
Password: *leave blank*
WLAN SETTINGS
Basic Settings:
Enable Wireless
Network mode 11b/g/n
Main SSID: make up one and fill in here
Minor SSID: *leave blank*
Broadcast SSID: enable
MBSSID AP Isolation: Disable
AP Isolation: Disable
BSSID: your router's MAC address.
Channel: leave it set to AutoSelect, or choose channel 6
DHCP SERVER
DHCP Server Enabled
IP Addr Start: 192.168.0.100
IP Addr End: 192.168.0.200
Lease Time: One day
NETWORK STATUS
WAN IP: 41.151.110.67
Subnet mask: 255.255.255.255
Gateway: 10.64.64.64
Primary DNS Addr: 8.8.8.8
Secondary DNS Addr: 196.25.1.9
Connection mode: 3G WAN
SERVICE STATUS
IP Addr: 192.168.0.1
Subnet mask: 255.255.255.0
DHCP server: enabled
NAT: enabled
Firewall: enabled
OTHER SETTINGS
WPS CONFIG
WDS Settings: WDS mode: disable
WPS Settings: enabled
WPS mode: PBC
SECURITY SETTINGS
WPS Auth Mode: WPA2-PSK
WPS Encrypt Type: AES
WPS Default Key Index: 2
Pass Phrase: choose one consisting of 8 to 12 alphanumeric characters and fill it in here - you'll have to type it in on each of the devices you wish to connect to your new wireless network.
Key Renewal Interval: 3600 second
Once the Huawei dongle has been correctly detected by the Tenda, the System Log should show something like this:
3 Search Modem device
Zero-CD device found. vendor=[0x12d1]product=[0x1520].
eject Zero CD device success.
Modem info: Vendor=12d1 ProdID=1451
Manufacturer=HUAWEI Technology Product=HUAWEI
Mobile SerialNumber=not provided.
USB modem found
Please do not hesitate to post any other questions about the Tenda / Huawei / 8Ta combination for 3G broadband
username: Space