Cisco PXM Version 1.1 Instrukcja Użytkownika Pobierz pdf (Strona 4)

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PHYSICAL LAYER OC-3C/STM-1 INTERFACE

• Four OC-3c/STM-1 (155.520-Mbps) ports

• Trunk or port interface mode

• Cell transfer rate of 353,208 cells per second

• Compliant with Synchronous Optical Network (SONET) standards

– Telecordia GR-253-CORE

– ANSI T1.105

• Compliant with SDH standards

• ITU-T G.707, G. 708, and G.709

• ITU-T G. 957, G.958

• ITU-G.783 Annex-A

Table 3 describes the OC-3c/STM-1 interface.

Table 3. OC-3c/STM-1 Interface Physical Characteristics

Tx Power (dBm) Rx Range (dBm)

Type of back card Source 1310 nm Min Max Min Max Physical Range (km)

Multimode Fiber (MMF)

LED –22 –15 –31 –10 SC* and LC** 2 km

Single-Mode Fiber (SMF)

Intermediate Reach (IR)

Laser (Class 1) –15 -8 –28 –8 SC* and LC** 15 km

SMF Long Reach (LR)

Laser (Class 1) –5 0 -34 –10 SC* and LC** 40 km

STM* Electrical

N/A N/A N/A MCC*** 100m for IG59

cables

* SC is used in the 4 port OC-3c/STM1 modules

** LC is used in the 8 port T3/E3 plus 4 port OC3-c/STM1 Combo modules and 8 port OC-3c/STM1 modules

*** MCC for 8 port STM1 Electric modules

ATM LAYER

• Configurable for trunk and public or private User-Network Interface (UNI) application

• UNI compliant to ATM Forum UNI Specifications V.3.0 and V.3.1 and V4.0, and ITU-T I.361 and I.432 specifications

• Complies with standard usage parameter control (UPC) and connection admission control (CAC) per ATM Forum UNI Specification V.3.1

and Traffic Management V.4.0 and ITU-T I.371

• Supports virtual circuit connections (VCCs) and virtual path connections (VPCs) per ATM Forum UNI Specification V.4.0 and ITU-T I.371

• 27,000 connections per chassis

• Virtual path identifier/virtual channel identifier (VPI/VCI) range for VCCs and VPCs: per UNI Specification 4.0

• Early Packet Discard (EPD) and Partial Packet Discard (PPD)

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Cisco PXM Version 1.1 Instrukcja Użytkownika Strona 4