I got an MC3810 a while ago on a trade and I haven't had much
time to mess with it. I couldn't stand the suspense any more so I took
it apart this evening just to get an idea of what it can do.
The base chassis has a 10 meg ethernet port and two DB60 serial
ports just like a 2501. The processor is a 40 MHz risc chip so its on
par with the 2610 in terms of performance. It has a single flash slot
and a single dram slot.
There are some good diagrams of the insides on this link:
http://www.cisco.com/univercd/cc/td/doc/product/access/multicon/3810fru.htm
The expansion slots are what makes this router so cool - you get a
video dialer slot for RS366 which is essentially useless but the other
four expansion slots are very interesting.
The video dialer slot is next to the power supply, the slot next to
the left holds a DSP for voice compression, the next slot can take a
variety of Multiflex trunk cards, and the far left two slots can take a
DSP and an MFT like the ones on the right or you can install a six port
pots card that will do FXO, FXS, or E&M.
I already had an MC3810-MFT-T1 I'd gotten with a previous package
of Cisco stuff and the MC3810 I bought for $1100 had the same T1 module
and the MC3810-VCM6 DSP module.
I own an pair of Adtran TSU 600 T1 channel banks with dual FXS
ports - I can configure the 3810's T1 port and use a pots phone plugged
in to the channel bank to do VoFR, VoATM, and VoIP.
I started digging to find out what other goodies you can put in a
3810 and I was amazed to find this gem - the MC3810-MFT-TBS - this card
has a T1 MFT port and an ISDN S bus just like the 2503.
You can find a full list of parts for the MC3810 here -->
http://www.cisco.com/univercd/cc/td/doc/pcat/mc3810.htm
At the moment I have in my lab a Cisco 2521, a Cisco 2511, a Cisco
2525 /w ISDN, and this 3810. I am done with CCNP/CCDP and my next step
is voice specialization. I think I am going to add another 3810 and make
sure it has two MFTs and that one of those MFTs has the ISDN option -
that will get me VoFR, VoATM, VoIP, and it'll fill my quote of ISDN
boxes for the CCIE lab prep.
If you're just getting started on Cisco certs all I can say is
KEEP PUSHING. I've been studying for two years and I am amazed at the
cool stuff I get to do now that I've got the CCNP/CCDP out of the way.
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