Shelf description
Overview
Alcatel-Lucent 1665 DMX is a single-shelf multiplexer that can house DS1/E1, DS3/EC1, TransMUX, OC-3, OC-12, OC-48, OC-192, 10/100T (optical and electrical), 1G T/SX/LX/ZX, and SAN (FICON/ESCON/FC) circuit packs.
High-capacity shelf
The High-Capacity shelf is the standard shelf design and can operate using any release of Alcatel-Lucent 1665 DMX software. It incorporates DS1/DS3 D-SUB cable connectors on the rear of the shelf that were not available on an earlier design, and enable Alcatel-Lucent 1665 DMX to support 224 DS1/E1s or 192 DS3/EC-1s. In order to support this amount of traffic, the Alcatel-Lucent 1665 DMX High-Capacity shelf must be equipped with high-density DS1/E1 and DS3/EC-1 circuit packs.
The High-Capacity shelf also has the following characteristics:
Up to four Alcatel-Lucent 1665 DMX High-Capacity shelves can fit in a bay (including integral fan unit), and all shelves are individually mounted.
The Alcatel-Lucent 1665 DMX High-Capacity shelf is available with 30 amp circuit breakers or 20 amp circuit breakers.
Capacity
When equipped with VLF Mains (LNW59, LNW82, and LNW504), each Function Unit and Growth slot in the Alcatel-Lucent 1665 DMX shelf has a 10 Gb/s IO capacity. The LNW59 VLF Mains increase the capacity of the Main slots to 20 Gb/s. The LNW504 VLF Mains increase the capacity of the Main slots to 40 Gb/s.
When VLF Mains are not used, each Function Unit slot in the Alcatel-Lucent 1665 DMX shelf has a 2.5 Gb/s IO capacity. Even though the Growth slots have 5 Gb/s capacity only 2.5Gb/s is used. The Main slots have 10 Gb/s.
Interface density
Alcatel-Lucent 1665 DMX provides a VT1.5 and STS-1 cross-connect fabric. Alcatel-Lucent 1665 DMX's main switch fabric is contained in each of the high-speed (network-side interface) circuit packs, located in the MAIN slots. The MAIN slots house OC-3, OC-12, OC-48, and OC-192 high-speed interfaces.
They can also house the LNW80 switch pack. The LNW59, LNW82, and LNW504 VLF Main circuit packs support true 0x1 Function/Growth slot equipage. True 0x1 allows different types of circuit packs to be mixed within a function or growth group. In many cases, this doubles the overall capacity of the shelf. A high-speed OC-n line can also be provisioned as 0x1.
The table below details the maximum number of signals that Alcatel-Lucent 1665 DMX can transport if all Function Unit groups, and Growth Slots where applicable, are equipped with a particular circuit pack. For example, if the required VLF Main circuit pack is installed, and both slots in the four Function Unit groups and both Growth slots are equipped with the LNW64 circuit packs, then 80 1000BASE-SX/LX/ZX ports are supported. This results from 5 pairs of LNW64 packs, a total of 10 packs, each supporting 8 ports.
Table 4-1: Interface densities
|
Interface type |
Capacity/Main Switch |
Comments | |
|---|---|---|---|
|
VLF (0x1 equipped) |
Large/Medium Fabric | ||
|
DS1/E1 |
224 |
224 |
Electrical TDM packs, and other packs that require rear access, do not support true 0x1. For these packs, overall capacity is not increased with VLF Mains |
|
DS3/EC-1 |
192 |
192 | |
|
TransMUX |
192 |
192 |
The 192 capacity requires the 48 ports available on the LNW20. |
|
OC-3 |
136 (136 unprotected, 68 protected) |
80 |
LNW55 with LNW82 mains The 136 capacity requires the 12 ports available on the LNW55. |
|
OC-12 |
136 (136 unprotected, 68 protected) |
40 |
LNW55 with LNW82 mains The 136 capacity requires the 12 ports available on the LNW55. |
|
OC-48 |
48 (48 unprotected, 24 protected) |
10 |
LNW62/LNW55 with LNW82 mains |
|
OC-192 |
18 |
2 |
LNW504 18 capacity requires the 4 OC-192 ports available on the LNW504. |
|
10/100BASE-T |
96 |
96 |
Electrical backplane-based FE ports (like the LNW66), do not support true 0x1. For these packs, overall capacity is not increased with VLF Mains. 1 |
|
100BASE-T (electrical PTMs) |
80 |
40 |
Larger capacities associated with VLF Mains require 0x1 equipage in all slots. |
|
100BASE-ZX/LX/FX (optical) |
80 |
40 | |
|
1000BASE-ZX/LX/SX |
80 |
20 | |
|
1000BASE-T |
80 |
20 | |
|
FICON/ESCON/ Fibre-Channel |
40 |
20 | |
Notes:
Alcatel-Lucent 1665 DMX does not allow installation of two packs with electrical interfaces in adjacent slots within the same Function Unit or Growth Group (other than an equipment-protected pair). Therefore, in systems equipped with VLF mains, LNW66 packs can reside in either Slot 1 or Slot 2 of a group, but not both at the same time. Telcordia ® only supports electrical packs in Slot 1 of a group. However, another optical (Ethernet or SONET) pack may be installed in the other slot. In non-VLF equipped shelves, LNW66 can only occupy Slot 1 of a particular group.
Alcatel-Lucent 1665 DMX also provides virtual concatenation (VCAT) at the STS-1, STS-3c, or VT1.5 rates, depending on the pack. VCAT increases flexibility when managing Ethernet services.
Front view
Alcatel-Lucent 1665 DMX shelf is a front access shelf. The figure below shows an example equipage with the following packs:
For pack-specific slot equipage rules see Circuit pack slots and compatible circuit packs and Very large fabric (VLF) engineering rules.
Figure 4-1: Shelf front view
Circuit pack slots and compatible circuit packs
The Alcatel-Lucent 1665 DMX High-Capacity shelf has 8 function unit slots, 2 Main slots, 2 Growth slots, and one Control slot.
Function unit slots
The function unit slots are divided into four groups designated A, B, C, and D. Function unit slots A1, A2, B1, B2, C1, C2, D1, and D2 can be equipped, depending on the application, with the following circuit packs:
-
100/1000BASE-T, 100BASE-ZX/LX/FX, 1000BASE-SX/LX/ZX Private Line (LNW170)
-
SAN circuit pack with choice of FICON/ESCON/Fibre-channel interfaces using PTM optics (LNW73 and LNW73C)
When the shelf is equipped with non-VLF Mains, Ethernet and SAN circuit packs are restricted to slot 1 of a function unit (for example, slot D1). If slot 1 of a function unit is equipped with an Ethernet or SAN circuit pack, then slot 2 must be equipped with a 177D apparatus blank or an LNW98 detectable blank circuit pack.
When the shelf is equipped with the LNW59, LNW82, or LNW504 VLF Mains, Ethernet and SAN packs can reside in Slots 1 and 2 of a function unit. See Chapter 6, System planning and engineering for restrictions.
Growth slots
Growth slots G1 and G2 can be equipped, depending on the application, with the following circuit packs:
-
100/1000BASE-T and 100/1000BASE-ZX/LX/FX Private Line (LNW87)
-
100/1000BASE-T, 100BASE-ZX/LX/FX, 1000BASE-SX/LX/ZX Private Line or switched (LNW170)
Note:
The G slots can only support electrical Ethernet services through electrical PTMs. When the LNW74 is installed in the Growth slots, only the optical ports are functional. Because the LNW74 does not support electrical PTMs, 10/100BASE-T ports cannot be utilize when the LNW74 are installed in a Growth slot.
Since the LNW87 and LNW170 packs support electrical PTMs the PTM-based 100/1000BASE-T ports are supported in the Growth slots when these backs are installed.
When the shelf is equipped with non-VLF Mains, Ethernet and SAN circuit packs are restricted to slot G1. If slot G1 is equipped with an Ethernet or SAN circuit pack, then slot G2 must be equipped with a 177D apparatus blank or an LNW98 detectable blank circuit pack. The LNW66 cannot be housed in the growth slots.
When the shelf is equipped with VLF Mains, Ethernet and SAN packs can reside in Slots G1 and G2. See Chapter 6, System planning and engineering for restrictions.
The LNW20 (48 DS3/EC1TransMUX) will not function in Portless mode when the shelf is equipped with certain Main interface packs. It is also restricted to Portless mode only when installed in Growth Slots. Therefore the LNW20 cannot be used in the Growth Slots when certain Main packs are used. Refer to Table 4-3, Main circuit packs that allow portless LNW20 operation.
Main slots
The main slots M1 and M2 can be equipped, depending on the application, with the following circuit packs:
The Stratum 3 timing generator and central TDM switch fabrics are embedded in all of the MAIN circuit packs. If main slot M1 or M2 is not equipped with a circuit pack, the slot must be equipped with a 177E apparatus blank or an LNW97 detectable blank circuit pack. There is no switch fabric on the blank circuit packs.
Alcatel-Lucent 1665 DMX supports LNW59, LNW82, and LNW504 VLF Main circuit packs. VLF Mains are designed to drastically increase the overall switch fabric capacity of Alcatel-Lucent 1665 DMX. When Alcatel-Lucent 1665 DMX is equipped with VLF Mains, the switch fabrics of the low-speed, tributary packs are not used. Rather, all switching functions are performed on the VLF Main Fabric.
Control slot
The control slot CTL is reserved for the non-redundant System Controller (SYSCTL) circuit pack. Current software requires the use of the LNW2 SYSCTL.
Rear view
The figure below shows the various jacks and cable inputs on the Alcatel-Lucent 1665 DMX High-Capacity shelf backplane.
Figure 4-2: Alcatel-Lucent 1665 DMX High-Capacity shelf backplane connectors
The shelf backplane provides the following connectors:
-
External DS1 synchronization input and output (J9 SYNC1 and J14 SYNC2)
-
−48 VDC power feeder A and B (P14 −48VA, −48RTNA and P15 −48VB, −48RTNB)
-
Eight DS1/DS3 and 10/100Base-T inputs (J2 A IN, J4 B IN, J5 C IN, J7 D IN, J20 A IN, J21 B IN, J22 C IN, J23 D IN)
-
Eight DS1/DS3 and 10/100Base-T outputs (J1 A OUT, J3 B OUT, J6 C OUT, J8 D OUT, J24 A OUT, J25 B OUT, J26 C OUT,J27 D OUT)
The −48 VDC power feeder interfaces (BAT A and BAT B) are located on the sides of the shelf.