would probably have nothing to write about if we actually read product
manuals. Then again, who reads manuals anymore? Come to think of it,
most products I receive these days don’t even have manuals. Well, I
guess they do if you count a PDF file as a manual. Here is another
episode in my exciting adventure of getting the latest technology to
installed the appropriate CallVantage
alert) equipment that was sent to me a few months back when
alert) first released the service. I wanted to write about it
quickly so I decided to install it in my office the same day I received
the package. Well, my office has a few T1s and trying to install the
D-Link DVG-1120M telephony adapter (TA) behind my firewall was
unsuccessful. So I connected to a fixed IP address which meant I had to
turn off DHCP (define
alert) on the TA and configure the IP address, subnet, DNS servers,
A few weeks
ago I brought the TA home. I directly connected the TA into my cable
modem and then connected my Linksys
alert) wireless router into the D-Link TA. This didn’t work, as I
forgot that I turned DHCP off on the TA. I then installed the TA behind
the Linksys device. This resulted in no phone service and no Internet. I
gave up as it was late. I had to sleep and subsequently, go on a trip
the next day.
replaced my Linksys router with a new Linksys 802.11g device the WT54G
(it works great) and decided to figure out what was wrong with the
turned on DHCP under the “WAN IP Address” section. Still, no luck.
Nothing worked. I then decided that there was a DHCP conflict of some
kind so I turned off the DHCP server on the TA. Still, no luck. I then
decided that somehow the NAT setting was causing problem so turned off
alert) on the TA. Still, no luck… nothing worked.
point I decided to take a break and have brainpower food (Planter
premium Mixed Nuts – Atkins Friendly). I reemerged refueled and ready to
tackle this thorny problem. I plugged the TA directly into the cable
modem and voila, I had phone service! What a relief!
upstairs to get back to work and guess what? My computer didn’t work. I
had noticed that D-Link was using the address 192.168.15.1 while Linksys
was using 192.168.1.1. I changed the local IP address on the Linksys to
192.168.15.100 and magically, I had internet access.
everything was running, I did some research and discovered others had
problems getting the D-Link 1120M running behind a firewall. AT&T
representatives had told me in the past that voice quality was paramount
and obviously being in front of all other devices they can assure that
they receive as much bandwidth as needed to ensure voice quality. I hope
this article helps save you time, effort and energy when you install
CallVantage for yourself. Of course, you could have just read the
Rich Tehrani is TMC's president. He welcomes your comments.
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