Riverstone Networks SSG manual Architecture, Packet Overlay Network Consolidation

ARCHITECTURE

Packet Overlay

Network Consolidation

Customers interested in operational and/or STP consolidation cost reductions from their legacy STP networks can utilize the greater capacity of the Alcatel 5070 SSG ANSI to fold multiple existing STPs into a single platform. Public switched telephone network (PSTN) circuit-based networks designed six to ten years ago typically located STPs in geographic regions based on carrier transport costs at the time. Carrier transport costs have been declining for several years, eliminating the cost-effectiveness of having many small STPs, each requiring maintenance and yearly software/hardware upgrades. As shown in Figure 4, the Alcatel 5070 SSG ANSI can easily

support very large numbers of links with unequaled reliability and capacity to facilitate consolidation.

Many customers with existing circuit-based networks are planning to implement overlay VoP networks. These customers will require additional SS7 link connectivity and capacity from their legacy STPs to support the new overlay VoP networks. Most legacy STP networks will not have the available capacity or connectivity to support both a circuit-based and a VoP network. The hardware costs alone to upgrade legacy STPs to support an additional overlay network will make the Alcatel 5070 SSG ANSI a cost- effective alternative.

Figure 4 - MOPC Network Consolidation

Network 2

Network 1 Network 3

Part. 1	Part. 2	Part. 3
SPC=a	SPC=b	SPC=c
	Part. 0
	SPC=x
			5070 SSG
	Joint IN,
	NP, etc.

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