Configuring T1/E1 Structured (N X 64) Circuit Emulation Services; Overview Of Structured Circuit Emulation Services - Cisco Catalyst 8540 MSR Configuration Manual

Configuring T1/E1 Structured (n x 64) Circuit Emulation Services

Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.00
The following example shows how to display the detailed circuit information for CBR 3/0/0, the source
(active) side of the soft PVC (shown in
command:
CESwitch# show ces circuit interface cbr 3/0/0 0
Circuit: Name CBR-PVC-A, Circuit-state ADMIN_UP / oper-state UP
Interface CBR3/0/0, Circuit_id 0, Port-Type T1, Port-State UP
Port Clocking network-derived, aal1 Clocking Method CESIWF_AAL1_CLOCK_SYNC
Channel in use on this port: 1-24
Channels used by this circuit: 1-24
Cell-Rate: 4107, Bit-Rate 1544000
cas OFF, cell_header 0x100 (vci = 16)
Configured CDV 2000 usecs, Measured CDV 326 usecs
De-jitter: UnderFlow 1, OverFlow 0
ErrTolerance 8, idleCircuitdetect OFF, onHookIdleCode 0x0
state: VcAlarm, maxQueueDepth
Partial Fill:
Active SoftVC
Src: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.8030.10 vpi 0, vci 16
Dst: atm addr 47.0091.8100.0000.00e0.4fac.b401.4000.0c81.803c.10
Configuring T1/E1 Structured (n x 64) Circuit Emulation Services
This section provides an overview of structured (n x 64 Kbps) circuit emulation services and describes
how to configure CES modules for structured circuit emulation services.

Overview of Structured Circuit Emulation Services

An important distinction between structured and unstructured circuit emulation services is that
structured circuit emulation services allow you to allocate T1/E1 bandwidth. Structured circuit
emulation services only use the T1/E1 bandwidth actually required to support the active structured
circuit(s) you configure.
For example, configuring a CES module for structured services allows you to define multiple hard PVCs
or soft PVCs for any CES T1 or E1 port. In both module types, any bits not available for structured
circuit emulation services are used for framing and out-of-band control.
n x 64 refers to a circuit bandwidth (data transmission speed) provided by the aggregation of n x 64-Kbps
channels, where n is an integer greater than or equal to 1. The 64-Kbps data rate, or the DS0 channel, is
the basic building block of the T carrier systems (T1, T2, and T3).
The T1/E1 structured (n x 64) circuit emulation services enable a CES module to function in the same
way as a classic Digital Access and Crossconnect System (DACS) switch.
The Simple Gateway Control Protocol (SGCP) provides similar functionality by controlling structured
CES circuits for voice over ATM. For additional information see
For a detailed description of structured circuit emulation services, refer to the Guide to ATM Technology.
ATM Switch Router Software Configuration Guide
19-18
Figure 19-2), using the show ces circuit interface cbr
823, startDequeueDepth
47, Structured Data Transfer 0
Chapter 19 Configuring Circuit Emulation Services
435
Configuring SGCP, page 19-56.
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