Техническая Спецификация для Cisco Smart Serial Cable M/34 V.35 DCE (B) CAB-SS-V35FC
Модели
CAB-SS-V35FC
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DATA SHEET
CIRCUIT EMULATION OVER IP NETWORK MODULES
Figure 1. Four-Port T1/E1 Circuit Emulation Network Module (NM-CEM-4TE1)
Figure 2. Four-Port Serial Circuit Emulation Network Module (NM-CEM-4SER)
The Circuit Emulation over IP (CEoIP) network modules (product numbers NM-CEM-4TE1 and NM-CEM-4SER) for the Cisco
®
2600XM, 2691,
2811, 2821, 2851, 3660, 3700 and 3800 routers provide a new CEoIP service offering. These network modules provide bit-transparent data transport
that is completely protocol-independent.
For the first time, this allows network administrators to take advantage of their existing IP network to provide leased-line emulation services, or to
carry data streams or protocols that do not meet the format requirements of other multiservice platform interfaces.
APPLICATIONS
These two new network modules are the first Cisco router interfaces designed to meet the emerging standards for CEoIP.
All previous Cisco router interfaces require that data be presented in the form of:
•
Native IP frames
•
Frame Relay frames
•
High-Level Data Link Control (HDLC) frames
•
ATM cells
•
Channelized pulse-code-modulation (PCM) voice
•
Asynchronous (“start/stop”) data
These new network modules do not assume that data has any predefined format or structure. They simply regard the data as an arbitrary bit stream.
All data bits are simply transported to a defined destination encapsulated in IP packets.