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Benefits
The Cisco MC3810 multiservice access concentrator formerly supported only non-dial permanent
virtual circuits (PVCs) for ATM traffic.
SVCs offer the following benefits:
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Restrictions
The following features are not supported.
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Related Features and Technologies
The Cisco MC3810 also supports data over ATM SVCs. Wide-Area Networking Configuration
Guide and Wide-Area Networking Command Reference provide more information about the
commands and configuration steps required for this capability.
Dynamic resource allocation is more efficient and flexible than in nailed-up PVC connections.
Many service providers offer favorable pricing for ATM SVC service.
Interface requirements are determined by total bandwidth needs rather than by the number of
different remote connections.
SVCs support flat network topologies where each endpoint is separated by one hop only, offering
the following advantages:
— Simplifies design and management challenges.
— Improves voice quality because there is only one compression cycle—in contrast to schemes
where voice is compressed, decompressed, and compressed again.
— Reduces delays over designs with multiple hops.
Direct E.164 ATM addressing
Available Bit Rate (ABR) service
Leaf-initiated joins (LIJs)
ATM anycast, communication between one sender and the nearest of several receivers in a group
Generic Identifier Transport (GIT), which uses an information element to carry identifiers
between two users
Switched Virtual Path service, which is the grouping of SVCs to define a path (usually within a
single application) where the switch directs calls as appropriate
Proxy signaling, where, for example, IP traffic is identified by class or precedence and an IP
router rather than the source host signals an ATM layer
Voice over ATM Switched Virtual Circuits on the Cisco MC3810 3
Benefits
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