8040/Y.1340 GFP frame mapping into Plesiochronous Digital Hierarchy (PDH)
G.7042/Y.1305 Link Capacity Adjustment Scheme (LCAS) for Virtual Concatenated Signals
G.8601/Y.1391 Architecture of Service Management in a Multi-Bearer, multi-carrier environment
The ITU standard documents listed in the previous the table are all approved and,
released.
While small adjustments to these standards continue to be made through the contribution
process, no major changes are expected. The standard for circuit bonding is
likely to be very stable.
The only area where standards work is still continuing is in the network management
areas for circuit-bonding services. Several contributions related to this are included in
the approved standard G.8601. Additional work is being done especially with N?—T1s
and N?—DS3s. Digital Communication Channel (DCC) standards for optical circuits
(OC3s and OC12s) are well-defined and in use for circuit-bonded optical services.
Economic Assessment
Figure 10.22 shows a typical corporate network with multiple remote sites and a data
center. This configuration will be used as the model for an economic assessment of
circuit bonding.
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