Serial WIC-1T or 2T cards are used for connecting Leased Lines .There cards have got V.35/V.24 //RS-530 interfaces .These cards are connected to Modems through Serial Cables depending on the interface available on Modem.
if a modem has got V.35 interface , then, use need V.35 DTE cable for connecting WIC-1T serial port and modem.
Modem has got two Line side and interface.Line side is used for connecting Leased line/pair of physical wires coming from TELCO/Service Provider.
At Service Provider end, another modem is placed which has got G.703 .One side is connected to Customer side on physical pairs and other side [G.703 ] is connected to their unit .This unit is connected to other remote sites through Radio Links /VSAT .This makes Side A .
Similarly , site B is also there which makes point to point connectivity for one customer for site A and B.TELCO maps the Time Slots on their units as well.
These modems work on external clock provided by TELCO and are also configured for Time Slots 64/128/192/256 /2Mbps depending on the circuit you have procured from Telco.
The modems used have range which means distance from TELCO to Site A , not end to end i.e. Site A to site B.
Some modems can work upto distance of 1 km , 2 km [from TELCO to customer premises ]
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There is a Serial WAN Interface Card, for example the WIC-1T.
For what do I use that card?
Normally, to connect to a Telco's T1 or E1 circuit.
When I have DSL connection, my router only has an Ethernet-Interface, which is connected to the splitter (this must be pppoe).
A splitter or a "modem"? A RJ11 splitter might just be a little 1:2 RJ11 plug. An aDSL "modem" generally takes the RJ11 telco connection on one side and a RJ45 Ethernet connection on the other side.
Question 2: When I search via Google, I often see topologies where two routers are connected with a serial connection.
Why do I connect them with a serial cable? How long can a serial cable be? I also can connect them via Ethernet.
Yes, you can often connect two routers, back-to-back, with serial cables. Normally only done in a lab.
I recall (?) the spec calls for up to 50 feet.
You cannot connect Ethernet using serial ports, but of course, you can connect Ethernet between two devices. As Ethernet is a LAN media, this is quite common, while serial cables are design for WANs.
In an other picture, there is a router in New York and another router in LA, connected with a serial connection.
Is this cable 4.500km long? *confused*
The serial cable (digital), from your WIC-1T, only connects to a modem. The modem connects directly into the Telco network. Telco networks were originally all analog (to support phones). For those, you do sort of have a cable that can be thousands of KM long. It's not one cable, of course, but interconnect cables which, if they're long enough can have analog signal amplifiers. (Modern Telco networks are now often digital, except for the edge connections to analog phones.)
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.