Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the working of thousand line exchanges by using a combination of uniselectors and two motion selectors.
The schematic diagram for such an exchange is demonstrated in Fig. All subscribers is connected to a single rotary pre-selector switch at the exchange, and the outputs from this switch being linked to a bank of two-motion switches termed as 'group selectors'. The outputs from the pre-selector switches of an entire group of subscribers are connected together in parallel such as group of subscribers share a single bank of group selectors. If a subscriber lifts his telephone then the cradle switch causes a circuit to be completed reverse to the telephone exchange, signaling which the subscriber wants to make a call. It is causes the pre-selector switch to step around till it find a free group selector. The pre-selector switch then stops in such position and the group selector are 'seized' through the subscriber wishing to make a call.
FIG - 1000 Line Exchange
In 1000 line exchange, all subscribers have a 3 digit identification number starting from 000 to 999. By seizing the group selector, the subscriber dials his first digit and the selector switch moves up to the suitable row on the switch contact array. All final selectors have the possibility of connection to 100 lines. Therefore the 1000 lines are divided in 10 groups of 100 each, the group being specified by the first digit in the subscriber's number. Therefore the vertical motion of the group selector selects a last selector in the group related with the first digit dialed. Each single row of contacts or levels, of the group selector is associated to a bank of last selectors associated with a particular group of 100 line numbers. Containing dialed the first digit to select the suitable group, the group selector arm after that automatically rotates in the vertical direction till it finds a free last selector. In the final selector, both directions of motion are in the control of the subscriber's dial and after dialing two additional digits, connection is established, giving the called subscriber's to answer his telephone.
As an advocate of CISC architecture to RISC architecture, what are the merits and demerits of CISC to RISC architecture
Call request signal is: (A) Seize signal (B) Idle state signal (C) Line identification signal (D) Called subscriber alert signal Ans: Call request
Write a program that computes the minimum and maximum of elements in an array in Assembly 8086.
Documentation is done to give others with information and ease maintenance. The best documentation is done in the headers (function and scripts) and directly in the code. Any usefu
Q.What do you mean by the term 'bounded rationality in decision making'? Maximizing the outcomes of a decision is an ideal stage. Habitually it is an impossible thing. The caus
Q. What is Shadow Mask? Shadow Mask is a metal sheet that has fine perforations (holes) in it and is situated a short distance before phosphor coated screen. The Phosphor dots
Explain about the network level in detail. Network Level Firewall/Packet Filters: At the Network level firewalls operate upon the mechanism of filtering individual IP pa
Q Explain Instruction cycle and Execution cycle. and also explain Instruction Counter, Memory Address Register and Memory Buffer Register.
A call processor in an exchange requires 120 ms to service a complete call. What is the BHCA rating for the processor? If the exchange is capable of carrying 700 Erlangs of traffic
How are the function code handles in Flow Logic? When the User selects a function in a transaction, the system copies the function code into a specially designated
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd