TDM Encapsulations
The following service encapsulation options are available on TDM ports:
Service Types and SAP Encapsulations — Summary
Table 4
encapsulations apply to access-facing ports. The service (port) type and encapsulations are
configured at the port level.
Service (Port) Type
Ethernet
Ethernet
SONET/SDH
TDM
TDM
TDM
7705 SAR OS Services Guide
•
atm — supports multiple services for one customer
•
cem — supports multiple services for one customer. Structured cem service (circuit
emulation service over packet switched network (CESoPSN (n × DS0)) and
unstructured cem service (structure-agnostic TDM over packet (SAToP)) are
supported.
•
ipcp — supports a single IP service per TDM channel group on channelized
interfaces. This is typically used for router interconnection using the point-to-point
protocol (PPP).
lists the SAP encapsulations available to 7705 SAR service types. These
Table 4: Service Types and SAP Encapsulations
Services Overview
Encapsulation Option
null
dot1q
atm
cem
atm
ipcp
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