Small Form-Factor Pluggable Interfaces; Point-To-Point Optical Broadband Services - Nortel Optical Multiservice Edge 6130 Planning Manual

1-4 Introduction

Small form-factor pluggable interfaces

The OME6130 uses small form-factor pluggable (SFP) interfaces to deliver
optical rate and reach flexibility on a per port basis for the line interface. The
OME6130 also supports electrical SFP for the STM-1e interface.
The OME6130 offers the following SFP interface types:
SR-0, I-1.1/I-4.1, S-1.1/S-4.1, L-1.1/L-4.1, L-1.2/L-4.2, CWDM, STM-1 BX,
STM-1e, GE SX and GE LX.
Nortel Networks has been collaborating closely with leading SFP vendors to
improve the reliability, robustness and manageability of SFPs. The use of such
carrier-grade SFP technology enables service providers to enjoy the flexibility
of provisioning the interfaces per the requirements of the specific application.
SFPs also reduce the cost of sparing by enabling an upgrade of the optical line
interfaces as they become readily available.
Figure 1-2
Pluggable optical modules summary
Small-form factor pluggable (SFP)

Point-to-point optical broadband services

The OME6130 uses GFP, VCAT and LCAS standards for the mapping and
transport of Ethernet services.
GFP provides an efficient mechanism for Ethernet transport over a SDH core
network via efficiently mapping varying client signals into SDH VC-12, VC-3
and VC-4 frames. GFP mapping enables efficient network resource utilization
with low overhead requirements, and limited over-provisioning with VCAT.
End-to-end framing provides demarcation for the Ethernet signal, and enables
consistent SDH based PMs through the network. Since the Ethernet is mapped
into SDH frames, the existing core network can transport the Ethernet frames
transparently.
Optical Multiservice Edge 6130
155/622/1000 Mbps
155/622 Mbit/s
NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
- Carrier grade
- Service tolerance:
- Reach (SR/IR/LR)
(STM-1/STM-4)
- Rate (OC-3/STM-1, OC-12/STM-4 future)
- GE (future)
- CWDM with wavelength per pluggable slot
- Operational simplification
- Expenditure matched with reach requirements
- CAPEX savings through reduced sparing