PROCESSING OF SIGNALLING MESSAGES IN ATM NODE

WIPO Patent Application WO1999001009

A3

According to the invention, an ATM switch is used for returning signalling cells to their input side and to an apparatus which is located there for processing signalling cells and which performs SAR functions. The apparatus (56) processing signalling cells is connected to the ATM layer circuit (52) using a UTOPIA interface according to the standard. Seen from the ATM layer circuit, the processing apparatus does not hereby in any way differ from those physical layer circuits (PHY) connected to it through the UTOPIA interface which connect the optical fibres to the ATM node. Through the ATM switch (52) the signalling cells circulate back to the input side, and in the output buffer a modification of cell heading is done wherein the VPI/VCI data is replaced with a tag of that physical circuit through which the signalling cell has arrived and the old tag is replaced with a new tag by which the ATM layer circuit directs the modified signalling cells through the UTOPIA interface to the apparatus processing signalling cells.

WO/1997/012494	AN ASYMMETRIC SWITCH ARCHITECTURE FOR USE IN A NETWORK SWITCH NODE
JPS63200658	DEVICE FOR MONITORING HIGHWAY SIGNAL
JPS62264798	TIME SWITCH

YLOENEN TIMO (FI)
SEPPAENEN JUHA (FI)
TOSSAVAINEN TERO (FI)
TUOMISTO JANNE (FI)

PCT/FI1998/000562

March 18, 1999

June 26, 1998

Click for automatic bibliography generation  

NOKIA TELECOMMUNICATIONS OY (FI)
YLOENEN TIMO (FI)
SEPPAENEN JUHA (FI)
TOSSAVAINEN TERO (FI)
TUOMISTO JANNE (FI)

H04Q11/04; H04L12/56; (IPC1-7): H04Q11/04

GB2296621A	1996-07-03
EP0355797A2	1990-02-28
EP0472408A2	1992-02-26
EP0800324A2	1997-10-08
EP0518199A2	1992-12-16

View/Download PDF      PDF Help

Previous Patent: CROSS CONNECTION ELEMENT AND DATA TRANSMISSION NETWORK

Next Patent: ELECTRIC HEATING ELEMENT AND HEATER ASSEMBLY