I quote from http://forums.verizon.com/t5/High-Speed-Internet-DSL-and-Dial/SPEEDTEST-SLOWER-THAN-71-SLOWER-THAN-T...
A Wirespeed modem? For sure, that thing has no Web GUI. It certainly is old but I'm glad to see it is working properly still to this day
Unless you want to replace a working modem or bring another one into service for a few minutes, have a Verizon tech with access to the DSLAM (Maybe Anthony_VZ around here) get the statistics for your circuit and post them up for us to see. Westell used to have a utility for getting Statistics from the Westell 2100 and the older Wirespeed modems but since they were purchased by Netgear the utility is hard to find or no longer exists.
You can follow that advise given above OR with your existing modem..
As how to get the Transceiver Statistics, that will depend on what other equipment you have besides that DSL modem and your RJ-45 WAN port router..
-- Pre setup directions, regardless of what other equipment you have. This assumes that you have a Windows Computer.
#1 Go to dslreports.com -> FAQs -> Verizon Online DSL FAQ -> Connection -> What is the Westell Modem Browser and how can I interpret it's results?
The direct URL for that page is http://www.dslreports.com/faq/16899
#2 Download that tool and unzip it.
#3 Do not install it at this time.
#4 Make sure that you know how to setup a Static IP on your computer.
a) At http://portforward.com/networking/staticip.htm there is some guides.
b) If your computer has at least two NICs, be sure to which NIC is which.
-- End pre setup - regardless of what other equipment you have. For a Windows Computer.
#5 Your RJ-45 WAN port router, has a built in switch in it.
#6 If you have a hub/switch that is not part of a router, this what you do - Otherwise, skip down to (what to do without a hub/switch - not part of a router).
#7 Make that the hub/switch that is not part of router is only connected to a power supply at this stage.
#8 Disconnect the wire from the Westell at the your RJ-45 WAN port router end.
#9 That wire, if I understand things correctly, goes to the port next to the uplink port of that hub/switch
#10 Connect another wire from the your RJ-45 WAN port router's WAN/Internet/To Modem port.
#11 The other end of the wire that is connected to the your RJ-45 WAN port router's WAN/Internet/To Modem port, connects to any other port the hub/switch but not the uplink port or the port in use by the modem.
#12 Make sure your computer(s) behind the your RJ-45 WAN port router router can still access the net.
#13 One of the reasons that I said that in step 11, is because maybe I made a mistake in step 8 - it is not the port next to the uplink port, it is the uplink port.
-- End pre setup, if you have a hub/switch that is not part of a router.
#14 Disconnect your computer from behind the your RJ-45 WAN port router router.
#15 Setup a Static that is not in the same subnet as your RJ-45 WAN port route that wired NIC.
For example if the RJ-45 WAN port router's LAN IP is 192.168.1.1, then on that wired NIC...
IP Address: 192.168.2.1
Subnet Mask: 255.255.255.0
#16 As addressed in http://www.dslreports.com/faq/7267
For security precautions, unbind File and Print Sharing and the Client for Microsoft Networks from the second NIC.
#17 If you don't have at least two NICs, well disable that for that NIC.
#18 Connect that wired NIC to any other port of the hub/switch but not the uplink port, port next to the uplink port OR the port in use by the your RJ-45 WAN port router's WAN/Intenet/ To Modem Port.
#19 Now Install the tool that I sent you a link to.
#20
Once installed, don't forget to use ** CTRL-ALT-F7 ** to reveal several "hidden" tabs, the signal levels and error counters, so forth.
#21 In the tool go to DSL tab.
#22 If your computer has two NICs, please post the info from there.
#23 If your computer only has one NIC:
a) Copy down the info from there.
b) Disconnect the computer from behind the hub/switch that is between the Westell modem and the your RJ-45 WAN port router router.
c) Connect the computer to one of the your RJ-45 WAN port router's LAN ports.
d) Change the NIC to use DHCP.
e) Then post the info that you got from there....
---- End directions if you have a hub/switch that is not part of a router.
If you don't have a hub/switch that is not part of a router, consider buying one. A cheapo 4-port hub/switch will do.
What to do without a hub/switch - not part of a router and assuming that you don't want to buy one. 
#7 Disconnect the wire from the Westell at the your RJ-45 WAN port router end.
#8 Disconnect your computer from behind the your RJ-45 WAN port router router.
#9 Setup a Static with these settings for your computer's wired NIC.
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
#10 Connect your computer using the wire that you disconnected from the Westell.
#11 Now Install the tool that I sent you a link to.
#12
Once installed, don't forget to use ** CTRL-ALT-F7 ** to reveal several "hidden" tabs, the signal levels and error counters, so forth.
#13 In the tool go to DSL tab.
#14
a) Copy down the info from there.
b) Disconnect the computer from the Westell modem.
c) Connect the RJ-45 WAN port router to the Westell modem.
d) Connect the computer to one of the your RJ-45 WAN port router's LAN ports.
e) Change that NIC to use DHCP.
f) Then post the info that you got from there....
^^^^