What is claimed is:
1. A method of call processing, comprising:
passing, over a local area network, control signals from a centralized controller to each of a plurality of decentralized processors,
each of the plurality of decentralized processors, in response to the control signals, executing decentralized call control functions.
2. The method of claim 1, wherein passing, over a local network, control signals comprises loading control data from an external device.
3. The method of claim 2, wherein the control data includes data associated with performing maintenance functions.
4. The method of claim 3, wherein the maintenance functions include centralized monitoring.
5. The method of claim 3, wherein the maintenance functions include a redundancy failover.
6. The method of claim 3, further comprising interfacing the distributed processors by tying to a set of soft switch protocols.
7. The method of claim 1, wherein the controller is a mainframe.
8. The method of claim 1, wherein passing control signals is performed using an Internet protocol.
9. The method of claim 1, further comprising associating at a physical layer addresses of the distributed processors with physical locations.
10. The method of claim 9, further comprising overwriting default address with an internal address.
11. The method of claim 1, wherein each of the distributed processors is associated with at least one access device.
12. The method of claim 11, wherein each of the distributed processors is associated with at least one access device over a wide area network.
13. A call processing system comprising:
a centralized controller to send control signals to a plurality of distributed processors,
a local area network to couple the centralized controller to each of the plurality of distributed processors to perform decentralized call processing.
14. The system of claim 13, wherein the control signals are associated with performing maintenance functions.
15. The system of claim 13, wherein each distributed processor has data physical layer addresses that are location based.
16. The system of claim 13, wherein each distributed processor interface has a soft-switch architecture.
17. The system of claim 13, wherein each distributed processor communicates over a wide area network to access gateway devices.
18. The system of claim 17, wherein the gateway devices include a voice over asynchronous transfer mode gateway.
19. The system of claim 17, wherein the gateway devices include a voice over internet protocol gateway.
20. The system of claim 13, wherein each distributed processor has another processor that serves as a redundant partner.
21. The system of claim 13, wherein each processor has a software task.
22. The system of claim 21, wherein the software task is an independent call-processing entity.
23. The system of claim 13, further comprising a packet manager interfacing with an interconnect controller.
24. The system of claim 23, wherein the packet manager interfaces at least one of a server, a router or a firewall.
25. The system of claim 24, further comprising an interconnect controller providing a bidirectional interface between the controller and the distributed processors, the packet manager and signaling gateway
26. The system of claim 25, wherein the centralized controller sends broadcast messages to control the processors.
27. The system of claim 13, wherein the centralized controller includes a local area network control and monitoring device and a call control device.
28. The system of claim 27, wherein the call control device interfaces with telephony signaling network.
29. The system of claim 28, wherein the telephony signaling network is an SS7 network.
30. The system of claim 13, further comprising a packet manager interfacing with the centralized controller.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A coating method comprising coating polyurethane powder coating materials on a metal substrate, wherein the polyurethane powder coating materials comprise
A) 3-25% by weight of a polyurea;
B) 35-75% by weight of at least one amorphous or semicrystalline polyester having a hydroxyl number of from 5 to 250 mg KOHg and a melting point of from 50 to 130 C.;
C) 5-30% by weight of at least one crosslinker based on one or more of blocked polyisocyanates, blocked isocyanurates and uretdiones having a functionality of at least 2; and
D) 0.5-50% by weight of auxiliaries and additives, where component C) has 0.5 to 1.2 NCO groups available per OH group of component B).
2. The method according to claim 1, further comprising
homogenizing the polyurethane powder coating materials in a melt;
cooling the melt to form a solid; and
pulverizing the solid to form a powder; wherein
the coating comprises depositing the powder on the metal substrate.
3. The method according to claim 2, wherein the powder consists of particles each having a particle size of less than 100 m.
4. The method according to claim 1, further comprising curing the polyurethane powder coating materials on the metal substrate.
5. The method according to claim 1, wherein the coating comprises electrostatically spraying the polyurethane powder coating materials on the metal substrate.
6. The method according to claim 1, wherein the coating comprises fluidized-bed sintering of the polyurethane powder coating materials on the metal substrate with or without electrostatic assistance.
7. The method according to claim 1, wherein the polyurea A) is produced from monomers comprising
at least one isocyanate having a functionality of at least two; and
at least one amine having a functionality of at least two,
where an NCONH2 ratio of the at least one isocyanate and the at least one amine is from 0.9-1.1:1.
8. The method according to claim 7, wherein the at least one isocyanate having a functionality of at least two comprises an isocyanurate.
9. The method according to claim 7, wherein the at least one isocyanate having a functionality of at least two is selected from the group consisting of isophorone diisocyanate, hexamethylene diisocyanate and 4,4-dicyclohexylmethane diisocyanate.
10. The method according to claim 7, wherein the at least one amine having a functionality of at least two is selected from the group consisting of aliphatic diamines, cycloaliphatic diamines, aromatic diamines and polyamines having 5-18 carbon atoms.
11. The method according to claim 7, wherein the at least one amine having a functionality of at least two comprises isophoronediamine.
12. The method according to claim 1, wherein the component B) comprises an amorphous polyester.
13. The method according to claim 12, wherein the amorphous polyester has a functionality of from 2.0 to 5.0, an OH number of from 5 to 250 mg KOHg, a viscosity at 160 C. of <60,000 mPas, and a melting point of from 50 C. to 130 C.
14. The method according to claim 1, wherein the component B) comprises a semicrystalline polyester.
15. The method according to claim 14, wherein the semicrystalline polyester has a functionality of from 2.0 to 4.0, an OH number of from 5 to 250 mg KOHg, a melting point of from 50 C. to 130 C., and a glass transition temperature of <10 C.
16. The method according to claim 1, wherein the crosslinker C) is produced from starting components including at least one diisocyanate selected from the group consisting of isophorone diisocyanate, hexamethylene diisocyanate and 4,4-dicyclohexylmethane diisocyanate.
17. The method according to claim 1, wherein the crosslinker C) is blocked with at least one member of the group consisting of caprolactam, triazoles, oximes and pyrazoles.
18. The method according to claim 1, wherein the auxiliaries and additives D) comprise at least one member of the group consisting of leveling agents, pigments, fillers, dyes, catalysts, light stabilizers, heat stabilizers, antioxidants and effect additives.
19. A coated metal substrate comprising a metal substrate and a coating on the metal substrate, wherein the coating has a matt appearance and is produced by a coating process from polyurethane powder coating materials comprising
A) 3-25% by weight of a polyurea;
B) 35-75% by weight of at least one amorphous or semicrystalline polyester having a hydroxyl number of from 5 to 250 mg KOHg and a melting point of from 50 to 130 C.;
C) 5-30% by weight of at least one crosslinker based on one or more of blocked polyisocyanates, blocked isocyanurates and uretdiones having a functionality of at least 2; and
D) 0.5-50% by weight of auxiliaries and additives,
where component C) has 0.5 to 1.2 NCO groups available per OH group of component B).
20. The coated metal substrate according to claim 19, wherein the coated metal substrate has, at an angle of 60, a gloss level in a range of from 1 to 70.