User guide

5-1
Telesyn Service Guide (Circuit Emulation Service (CES))
5. Circuit Emulation Service (CES)
5.1 Overview
In release 5.0, “Pass-thru” Circuit Emulation Service for both E1 and DS1 circuits is supported on the CES8 SM.
In Pass-Thru, the whole DS1/E1 frame is passed. The Telesyn does not terminate/interpret the FDL in Pass-Thru.
The only layer terminated at the MAP is the line layer.
5.2 Technology
Refer to the Telesyn Component Specification for DS1/E1 standards.
5.3 Features
Since Circuit Emulation is pass-through service, many of the features listed in are N/A. However, since DS1/E1
data is delay sensitive and is being sent over a packet network, there are some QoS and traffic management issues
that are highly important, and these ill be discussed in detail.
TABLE 5-1 Feature Interactions for Circuit Emulation Service
Feature Supported? Notes
Data Service
(VLAN) Y
(UFO) Y (VLAN
based)
(IGMPv2) Y
(HVLAN) N
(VLAN Translation) N
Multicast channels N/A
MAC Limiting N/A
MAC Configuration N/A