Input Output Interface VPI VCI Interface i) A Virtual Circuit ATM switch has the
ID: 1993447 • Letter: I
Question
Input Output Interface VPI VCI Interface
i) A Virtual Circuit ATM switch has the following switch translation table
Suppose an ATM cell is received on Interface 1 with VPI=19 and VCI = 8.
On what output interface is the cell transmitted and with what VPI and VCI values?
(ii) A Virtual Path ATM switch has the following switch translation table
Suppose an ATM cell is received on Interface 1 with VPI=19 and VCI = 8.
On what output interface is the cell transmitted and with what VPI and VCI values.
input Output interface VP1 VCI interface VPI VCI 1 3 4 1 5 12 1 7 6 1 7 13 1 19 8 2 5 18 1 5 11 2 8 4Explanation / Answer
Phase angle (deg) Phase-Laufzeit
(Time shift) Time distinction Laufzeit-Phase
Frequency Frequenz-Phase
= c / f and c = 343 m/s at 20°C.
Calculation between point in radians (rad), the time shift or time delay t,
and the frequency f is:
Phase angle (rad) Bogen-Laufzeit
"Bogen" means that "radians". (Time shift) Time distinction Laufzeit-Bogenwinkel
Frequency Frequenz-Bogenwinkel
Time = path length / speed of sound