From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001 From: Sven Eisenhauer Date: Fri, 10 Nov 2023 15:11:48 +0100 Subject: add new repo --- Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/buttons.html | 110 +++++++++++++ Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/content.html | 174 +++++++++++++++++++++ Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/index.html | 29 ++++ Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/media.html | 21 +++ 4 files changed, 334 insertions(+) create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/buttons.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/content.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/index.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/media.html (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5') diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/buttons.html b/Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/buttons.html new file mode 100644 index 0000000..a263bd7 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch4/4_1_5/buttons.html @@ -0,0 +1,110 @@ + + + + + + + + + + + +New Page 1 + + + + + + + + + + + + + + + + + + + + + + + +
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+ + 4.1 + ISDN Concepts 
  + 4.1.5 + ISDN reference points 
+ + + + + + +
+ + ISDN standards define functional groups as + devices or pieces of hardware that enable the user to access the + services of the BRI or PRI. Vendors can create hardware that supports + one or more functions. ISDN specifications define four reference + points that connect one ISDN device to another. + Each device + in an ISDN network performs a specific task to facilitate end-to-end + connectivity. +

+ + To connect devices that perform specific + functions, the interface between the two devices needs to be well + defined. These interfaces are called reference points. + The + reference points that affect the customer side of the ISDN connection + are as follows:

+
    +
  • + + R – References the connection + between a non-ISDN compatible device Terminal Equipment type 2 (TE2) and a + Terminal Adapter (TA), + for example an RS-232 serial interface.
    • +
  • + + S – References the points + that connect into the customer switching device Network Termination + type 2 (NT2) and enables + calls between the various types of customer premises equipment.
    • +
  • + + T – Electrically identical to the S + interface, it references the outbound connection from the NT2 to the + ISDN network or Network Termination type 1 (NT1).
    • +
  • + + U – References the connection + between the NT1 and the ISDN network owned by the telephone company.
    • +
+

+ + Because the S and T references are + electrically similar, some interfaces are labeled S/T interfaces. + Although they perform different functions, the port is electrically + the same and can be used for either function.

+ + + + +
+ + + + + +
+ +
+ + + + + +
+ + + + + +
  +

+ + + Interactive Media Activity

+ +

Drag and Drop: ISDN Reference Points

+

When the student has completed this activity, the student + will be able to correctly identify the ISDN reference points.

+ +

+
+
+ + +     + + + + +
+ + + + + +
+ +
+ + + + + +
+ + + + + +
  +

+ + Web Links

+ + +

Integrated Servicews Digital Network (ISDN)

+ + http://www.cisco.com/univercd/cc/ + td/doc/cisintwk/ito_doc/isdn.htm

+ +

+

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+

+       +   +

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