WDMX shelf models

Overview

WDMX can be implemented by using spare slots in existing Alcatel-Lucent 1665 DMX SONET shelves that already make use of the main slots, and a subset of the function unit and growth slots. For these applications, WDMX is a WDM overlay on top of the existing SONET applications.

Multi-service transport over OTU-2

With the LNW705 muxponder pack, WDMX can be used without requiring SONET application packs in the shelf. Main packs are required for system timing. The LNW705 XM10G/8 Muxponder circuit pack is a highly integrated pack that multiplexes up to 8 ports of the most common high bandwidth client interfaces onto a single 10G wavelength. The 8 client ports can be a mix of the following signals: 1GE, FC100, FICON, FC200, FICON_EXP, or OC3/12/48. One GE is mapped using VCAT and GFP-F. All FC signals and FICON signals are mapped using VCAT and GFP-T. The client signals are mapped into a single STS-192 and then encoded into an OTN OTU-2 signal (including forward error correction) and is transmitted out on a DWDM XFP. The circuit pack is bi-directional and simultaneously handles the inverse function in the receive direction.

Figure 3-28: LNW705 ports

Figure 3-29: WDMX with LNW705 packs

In the figure, multiple client signals are coming into a single LNW705 in the G2 slot on the Alcatel-Lucent 1665 DMXtend. The LNW705 multiplexes up to 8 client ports onto the single OTU-2 for transport over the fiber. The single LNW705 in the Alcatel-Lucent 1665 DMX demuliplexes the signals and sends them onto another NE.

One-line unamplified 8 channel end terminal node

This model consists of an Alcatel-Lucent 1665 DMX shelf, shelf controller, 1 or 2 main packs for shelf timing, an 8 channel OMD pack (LNW785), and the following, optionally directly connected to the OMD:

• Existing Alcatel-Lucent 1665 DMX packs and functions (with the interconnect to the LNW785 OMD pack)

• Alien wavelengths from other equipment

The OMD pack (LNW785) may be equipped in any unequipped function or growth slot. OSMINE supported models for Alcatel-Lucent 1665 DMX allow function groups A, B, C, and D. Growth slots on the Alcatel-Lucent 1665 DMX do not have an OSMINE model because the pass-through fibers between two growth slots on the Alcatel-Lucent 1665 DMX shelf would have to pass around the main-1 slot and the controller slot.

A one-line 8 channel end terminal can have 1 or 2 main packs, 1 LNW2 controller, 1 WDM line, 8 optical channels, and 64 client ports in a single shelf.

Figure 3-30: WDMX 1-line end terminal

Two-line unamplified 8 channel add-drop ring node

This model consists of an Alcatel-Lucent 1665 DMX shelf, shelf controller, 1 or 2 main packs, two 8 channel OMD packs (LNW785), and directly connected to each OMD one or more of the following:

• Existing Alcatel-Lucent 1665 DMX packs and functions with the interconnect to the OMD pack typically equipped in the Main slots

• Alien wavelengths from other equipment

The OMD packs may be equipped in pairs in any unequipped function slot pair A, B, C or D in Alcatel-Lucent 1665 DMX and slots pairs D and Growth in Alcatel-Lucent 1665 DMXtend. A two-line 8-channel end terminal can have: 2 WDM lines, 16 optical channels, and 64 client ports in a single shelf. It can be used in conjunction with more shelves or alien wavelengths to connect the 8 optical channels that exceed the capacity of a single shelf.