The document provides a detailed overview of the mini-link 6600 microwave transmission system, including its system design, hop compatibility, and various plug-in units. It describes the applications of mini-link 6600 for packet and PDH transport, particularly in cellular and fixed operator networks, and outlines power, cooling, and grounding requirements for installation. Additionally, it details the functionalities of different plug-in units such as the node processor, modem units, and power filter units, along with their configuration and slot naming principles.

1. Training Agenda
• Microwave links
• Mini-link 6600 indoor units
• System design
• Hop compatibility
• Management
• Enclosure
• Family products
• Plug-in units
• Power requirements
• Cooling and spacing
• Grounding
• Led descriptions
• Slot naming principles
• Different radio configurations
• Traffic handling

2. MINI-LINK tn
family
AMM 20p B
AMM 6p C
AMM 2p B

4. MINI-LINK TN
modules

6. MINI-LINK 6600
INDOOR UNITS
MINI-LINK 6600 is a split-mount microwave transmission system. The MINI-LINK 6600 enclosure
is mounted indoors or in a climate-controlled outdoor cabinet. It is either a compact one-box
solution or it can be equipped with plug-in units according to what is needed on the site.
The connected microwave radio or radios are mounted outdoors. Up to 15 microwave hop
directions can be connected to one MINI-LINK 6600 indoor enclosure.
Coaxial cables connect the indoor installation to each of the outdoor radio units.

7. MINI-LINK 6600
HOP COMPATIBILITY
MINI-LINK 6600 is hop compatible with MINI-LINK TN nodes equipped with an MMU4 A modem
unit. This means it is possible to run a hop with a MINI-LINK 6600 at one end and a MINI-LINK
TN MMU4 A at the other.

8. MINI-LINK 6600
APPLICATIONS
MINI-LINK 6600 can be used for packet and or PDH transport in any application. The most
common application is back hauling in cellular networks.
MINI-LINK 6600 fits both at end sites and at small to large aggregation sites. It can transport
traffic for all kinds of mobile networks.
Other applications are fixed operator networks, enterprise networks and government networks.

9. MINI-LINK 6600
Backplane buses
Backplane buses
A DC power bus supplies the plug-in units with filtered DC from the power filter unit.
The node processor unit is in contact with the other plug-in units for control and supervision via a
management bus.
Ethernet traffic to and from the two modem units is connected to the node processor unit by two high speed
point to point buses.
For E1 or DS1 cross connect, the modem units and the node processor unit are connected by the TDM bus.

10. MINI-LINK 6600
ENCLOSURE CONTROL
When a MINI-LINK 6600 is installed in an Ericsson Radio Base Station, RBS, cabinet. The Enclosure
Control (EC) makes it possible to connect the MINI-LINK 6600 to the EC bus, a communication bus
connecting Ericsson equipment on site.
EC enables the RBS to monitor the MINI-LINK 6600 temperature and adjust the RBS cabinet fans
accordingly. This provides lower power consumption and reduces the total noise level for the site.
EC also enables node identification, which provides simplified operation and maintenance.
MINI-LINK 6600 does not require any configuration for the EC bus.
There are different enclosure sizes available for different applications. Let’s discuss them one-by-one.

11. Plug-in Units
Power filter unit
pfu
The PFUs operate at -48V DC and provide DC filtering.
The PFUs have under voltage and over voltage protection and polarity protection.
In MINI-LINK 6691 and 6693 it is possible to configure redundant power. This is achieved by
connecting two different power sources to the two power inputs on the PFU.

12. Plug-in Units
node processor unit
NPU
The Node Processor Unit, NPU, is the central processor of the node. It also stores the
software, configuration, and licenses for the node.
It has an IP router for the management network, and a switch for the Ethernet traffic.
The NPU holds the synchronization reference clocks.
The NPU is a mandatory unit and holds termination for Ethernet and management traffic.
The NPU also has user input and output interfaces on the front.

13. Plug-in Units
modem unit
MMU
The modem unit MMU is the interface to the radio unit and sets the radio carrier’s traffic type,
bandwidth, and modulation. By this it sets the carrier’s capacity.
Each modem unit handles two radio units. There are two coaxial connectors at the front of the
MMU for connecting the radio units and provide the radios with power and management.
MMU 1002 supports hybrid traffic. This means a user-configured combination of native Ethernet
and native E1 or DS1 traffic over the same carrier.

14. Plug-in Units
Fan Unit
FAU
The fan unit provides the enclosure with side to side cooling.
It automatically controls the fan speed.
And it has integrated control together with an Ericsson RBS if connected to the Enclosure Control bus.

15. Mini-link 6600 family

17. MINI-LINK
6651/4
MINI-LINK 6651/4
• Compact dual carrier end node with height 1U
• Separate FAN in the back
• 1+0/1+1/2+0/XPIC/2x(1+0)
• 4 x 1G/2.5 G SFP
• 2 x FE/1G RJ45
• 8xE1
This video for installation of MINI-LINK 6691 as sample of MINI-LINK 6600 family
• https://nrocms.ericsson.net/main/media-video/2-minilink-669x-installing-to-a-19-rack-344.aspx

18. MINI-LINK
6655
➢ MINI-LINK 6655 with PNM 1002 is a small flexible 1.5RU node for medium aggregation
hubs up to 8 radio directions (but up to 10 carriers).
➢ It has a switch capacity of 44 Gbps.
➢ It has 1 and 10 Gbps Ethernet interfaces on the front.
➢ It supports radio links with modulation up to 4096 QAM and channel spacing up to 112
MHz.
➢ MINI-LINK 6655 supports Ethernet (packet link), PDH, and a mix thereof in a Hybrid
Radio Link sending Ethernet and PDH traffic simultaneously.
➢ It consists of a rack, Enclosure 1501 , that must be equipped with a fan, FAU 1501 , and
a PNM board, either PNM 1001 or PNM 1002.
➢ MINI-LINK 6655 can also be equipped with up to Four MMU 1001/1002 or LTU
1001/1002 or ETU 1001/1002 or a combination.
➢ MINI-LINK 6655 can be fitted in a standard 19" or metric rack or on a wall using a
dedicated mounting set.
➢ The height of a MINI-LINK 6654 is 1.5U.

23. Power
requirements
• An input DC Voltage of –48 V required to power up MINI-LINK 6600 nodes
• Rate of each fuse or CB must be 10 - 12 A for MINI-LINK 6691
• Rate of each fuse or CB must be 16 - 20 A for MINI-LINK 6693
• Rate of each fuse or CB must be 32 - 40 A for MINI-LINK 6692

24. Cooling and
spacing
requirements
• MINI-LINK 6600 nodes can be installed
inside 19” rack according to their
dimensions
• Air-cooling is provided by the FAN UNIT .
The air enters at the right side of the
enclosure and exits at the left side of the
enclosure. The air inlet and outlet must not
be blocked in any way.
• Distance between air inlet and outlet to wall
must be ≥ 20 mm.
• MINI-LINK 6651/2 and 6654 height is 1U
while MINI-LINK 6655 height is 1.5U.
• MINI-LINK 6691 height is 1U and 6693
height is 1.5U while MINI-LINK 6692 height
is 3U.
• All empty slots must be covered with
dummy units.
• Insufficient cooling may shorten the useful
life of the equipment. Be sure to always
keep the recommended distance to any
wall.
• Environmental conditions must comply with
cooling specifications.

25. grounding
• Earthing cable connected and tighten to screw in left side of Mini-link node.
• The other end of the earthing cable must be connected to one of standard grounding
points according to customer acceptance criteria.

28. RMM
Removable Memory
Module
• The RMM is positioned on :
• MINI-LINK TN – NPU
• MINI-LINK 6600 – NPU
• MINI-LINK 6366 – O&M port
• MINI-LINK PT2020 – O&M port
• MINI-LINK CN210 – In front slot
• It is a unique for each node and need
to be installed before commissioning
for the node to function
• RMM is a hardware which insert inside
node to store configuration file as
memory
• Also , it is used for license installation
and storing license keys for features
See following video for RMM installation inside NPU
https://nrocms.ericsson.net/main/media-video/1-minilink-669x-insert-the-rmm-345.aspx

30. Plug-in Units
modem unit
MMU 1002
MMU 1002 fits all enclosures.
• It is a dual carrier modem where both carriers support simultaneous packet and TDM
traffic.
• It has support for up to 4096 QAM with adaptive coding and modulation and has ETSI
and ANSI channel spacing from 7 to 112 MHz.
• MMU 1002 works with both MINI-LINK 6363 and RAU2 X.
• It supports header compression and XPIC.
• With two modems, 1+1 RLP, 2+1 RLB, 4+0 RLB, 2+2 RLP is supported. It also supports
XPIC, ACM, 4096 QAM, physical layer sync etc.

31. Hybrid traffic
MMU 1002
The MMU 1002 hybrid modem unit can transport native Ethernet and native E1 or DS1 in parallel.
The traffic mix is configurable in steps of one E1 or DS1 from only packet traffic up to a maximum
of 80 E1s or DS1s.
At commissioning, the modem unit must be configured with channel spacing and modulation.
This gives the total carrier capacity. If no PDH traffic is transported, all of this capacity is available
for packet traffic, called packet link capacity.
If PDH traffic is to be transported, the number of E1s or DS1s must be configured. The remaining
carrier capacity is the packet link capacity.

36. Naming Principles
for Slots
MINI-LINK 6691
PIU positions in the MINI-LINK 6691 enclosure:
Slot 0 FAU 1101
Slot 1 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 2 PFU 1101
Slot 3 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 4 NPU 1002, NPU 1003, NPU 1005
For 2+2/4+0 EQP with MMU 1002 in MINI-LINK 6692, the following
combinations are possible:
One MMU 1002 in slot 1 and one MMU 1002 in slot 3

37. Naming Principles
for Slots
MINI-LINK 6693
PIU positions in the MINI-LINK 6693 enclosure:
Slot 0 FAU 1301
Slot 1 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 2 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 3 PFU 1301
Slot 4 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 5 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 6 NPU 1002, NPU 1003, NPU 1005
For 2+2/4+0 EQP with MMU 1002 in MINI-LINK 6692, the following combinations are
possible:
One MMU 1002 in slot 1 and one MMU 1002 in slot 2
One MMU 1002 in slot 4 and one MMU 1002 in slot 5

38. Naming Principles
for Slots
MINI-LINK 6692
PIU positions in the MINI-LINK 6692 enclosure:
Slot 0 FAU 1201
Slot 1 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 2 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 3 PFU 1201
Slot 4 PFU 1201
Slot 5 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 6 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 7 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 8 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 9 NPU 1002 or NPU 1005
Slot 10 Second NPU 1002 or NPU 1005 for NPU Protection
Slot 11 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
Slot 12 MMU 1001, MMU 1002, LTU 1001, LTU 1002, ETU 1001, or ETU 1002
For 2+2/4+0 EQP with MMU 1002 in MINI-LINK 6692, the following combinations are possible:
One MMU 1002 in slot 1 and one MMU 1002 in slot 2
One MMU 1002 in slot 5 and one MMU 1002 in slot 6
One MMU 1002 in slot 7 and one MMU 1002 in slot 8
One MMU 1002 in slot 11 and one MMU 1002 in slot 12

39. LED Descriptions
for Plug-in Units
Item LED Description
A Fault (red) Indicates a fault.
B Operational (green) Power indication
C Maintenance (blue) Indicates that the unit is OK to
remove.
LED Descriptions for Plug-in Units