I've never seen an official doc on it, but as a partner, I occasionally see a quote that has something regarding it. For your example,
24=Number of ports (not always accurate because it doesn't always count uplink ports. It's usually the number of ports for access.)
T=Ethernet I think, however there is also P which is for PoE.
These can sometimes vary so don't take this as gospel, but it should be pretty close.
Hope it helps.
As noted, the naming convention isn't always conventional. ;)
I suggest getting a copy of the (free in soft copy, also orderable for a nominal cost or usually available through your Cisco account team if you have one) Cisco Product Quick Reference Guide and downloading it to your computer. It is published regularly and has a good overview of most of Cisco's products in one place.
Hope this helps.
You can deduce it easily enough:
WS = Switching
C = Catalyst
3560 = Model
G = Type
24 = Port no.
TS = Sub Type
Or just use the SVO/RMA tool on the website, it will show you a list of all the parts for product.
Can you please let me know where can I get most of Part numbers and model number catalog for routers and Voip phones. Would be a big help.
There is no set location or spread sheet you can refer to!
The recommendation is to read the document of the model you are interested in or do what "routeremperor" has suggested. Searching and developing the naming your self however; be careful; their are a lot of meaning to one letter :-)
WS = Switch
C = Catalyst
X = Series ( X *OR* XR )
48 = How many Ethernet 10/100/1000 ports (24 or 48 )
FP = Identify if there is POE or not, and also Identify the Watt of POE if exist. ( F = 740w *OR* L= 320w , P= POE ) If no POE then we will use (T) Instead
S = number of SFPs ( it is used to identify number of SFPs , S= 4 SFP *OR* D= 2 SFP+ )
-L = IOS Feature set ( for X series : -L = LAN BASE *OR* -LL = LAN lite ) , ( For XR : -IL = IP lite)
NOTE: We have 2 Exceptions for this concept:
1- WS-C2960X-24PSQ-L : Watt not mentioned,S=4SFP , Q is a new symbol.
This Switch have only 2 SFP and 2 1000BASE-T , Its is also have POE on just 8 ports with 92w.
2- WS-C2960X-48TS-LL : Although It supposed to have 4 SFP referring to the S symbol, But it has only 2 SFP. ( When the IOS is -LL , Then there are only 2 SFP even if we use the S symbol )