Hi!
After big trouble with my Topcom Webr@cer 1154+ Annex B (Garmany), i now use my older Sphairon AR860 modem i got from my ISP. Just a little bit of google, i found something interesting http://wiki.mhilfe.de/index.php?title=Sphairon_AR860 (Sorry, this page is in german). There is a tool for "controlling" the modem which also supports controlling of (now thats funny at all) DG834 a.k.a. Webr@cer 1154+ and many others more. With the webinterface installed on the AR860 i was able to configure the router to my needs AND enabled telnet.

here is a picture of the pcb (AR801 is same as AR860; and as you can see it is non-wlan)
http://splifffiles.km-design24.de/pictureload/tn/1194814961_x_DSCF8769.JPG

BusyBox v0.61.pre (2007.08.10-02:16+0000) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

#
IGMPProxy       \[              ash             brctl
busybox         cat             chmod           cm_convert
cm_logic        cm_pc           cp              date
dhcp-fwd        dproxy          echo            false
free            grep            id              ifconfig
init            insmod          ip              iptables
kill            ledcfg          ln              login
ls              lsmod           mini_httpd      mkdir
modprobe        mount           ping            pppd
pwd             reboot          rm              rmmod
route           sh              sleep           tar
tc              test            true            tty
udhcpc          udhcpd          umount          updatedd
upgrade         upnpd           utelnetd        wget
whoami          yes
#
# cd /proc/
# cat cpuinfo
processor               : 0
cpu model               : MIPS 4KEc V4.8
BogoMIPS                : 149.91
wait instruction        : no
microsecond timers      : yes
extra interrupt vector  : yes
hardware watchpoint     : yes
VCED exceptions         : not available
VCEI exceptions         : not available
#