Positron GAM-8-MX User manual

G.hn Access Multiplexer (GAM)
Quick Installation Guide
GAM-8-MX / GAM-4-MX

GAM Quick Installation Guide
Positron Access Solutions 2 Document 180-0211-001 R01
Publication Information
©2020 Positron Access Solutions
GAM (G.hn Access Multiplexer)
Quick Installation Guide
Publication date: December 2020
Printed in Canada
Published By
Positron Access Solutions
5101 Buchan Street, Suite 220
Montreal, Quebec, Canada
H4P 2R9
Telephone US and Canada: 1-888-577-5254
International: [phone]
Product names, other than Positron's, mentioned herein may be trademarks and/or registered trademarks
their respective companies.
Disclaimer Notice
Although Positron Access Solutions has made every effort to ensure the accuracy of the information
contained herein, this document is subject to change.

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CONTENTS
Chapter 1.........................................................................................................................................5
About the GAM...............................................................................................................................5
1.1 Introduction........................................................................................................................6
1.2 GAM Connections.............................................................................................................7
1.2.1 Power Connection........................................................................................................7
1.2.2 Ethernet (SFP+) Port ...................................................................................................7
1.2.3 G.hn Ports....................................................................................................................8
1.2.4 Local management ports .............................................................................................8
1.2.5 GAM LED Indicators ..................................................................................................10
1.2.6 GAM Reset Button.....................................................................................................12
Chapter 2.......................................................................................................................................14
Step by Step Installation .............................................................................................................14
2.1 Step by Step Installation Procedure................................................................................15
Chapter 3.......................................................................................................................................24
WEB Management........................................................................................................................24
3.1 Introduction......................................................................................................................25
3.2 System Management ......................................................................................................25
3.2.1 Logging into the WEB GUI.........................................................................................25
3.2.2 System.......................................................................................................................26
3.2.3 General Information ...................................................................................................26
Chapter 4.......................................................................................................................................27
Technical Specifications .............................................................................................................27
4.1 GAM Technical Specifications ........................................................................................28
Chapter 4.......................................................................................................................................32
Safety and Warnings....................................................................................................................32
Chapter 5.......................................................................................................................................35
Warranty and Customer Service ................................................................................................35

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List of Figures
FIGURE 1:GAM POWER INPUT CONNECTOR.............................................................................................................7
FIGURE 2:GAM SFP+ CONNECTORS.......................................................................................................................7
FIGURE 3: INSIDE VIEW OF GAM-8-MX WITH 110 PUNCH-DOWN BLOCK......................................................................8
FIGURE 4: LOCAL MANAGEMENT PORTS ARE AT THE TOP RIGHT CORNER OF THE GAM CIRCUITRY........................................9
FIGURE 5: GAM SERIAL MANAGEMENT PORT PINOUT ................................................................................................9
FIGURE 6: GAM GLOBAL STATUS LEDS..................................................................................................................10
FIGURE 7: G.HN PORTS LEDS...............................................................................................................................11
FIGURE 8: SFP+ LED..........................................................................................................................................12
FIGURE 9: GAM RESET (RST) BUTTON ..................................................................................................................13
FIGURE 10: GAM LOGIN PAGE (BROWSER SPECIFIC)................................................................................................25
FIGURE 11: GAM PORT STATUS PAGE (DEFAULT PAGE AFTER LOGIN)...........................................................................26
List of Tables
TABLE 1: GAM GLOBAL LED INDICATORS...............................................................................................................10
TABLE 2: G.HN PORTS LED INDICATORS .................................................................................................................11
TABLE 3: SFP+ LED INDICATOR ............................................................................................................................12
TABLE 4: GAM DEFAULT CREDENTIALS ...................................................................................................................25
TABLE 5: GAM SUMMARY FEATURES ....................................................................................................................31

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Chapter 1
______________________________________
About the GAM

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1.1 Introduction
The GAM is a Fiber to the Distribution Point (FTTDp) solution typically installed
inside a wiring closet. The GAM-8-MX and GAM-4-MX comes with one (1) 10
Gigabit SFP+ interfaces to support any type of fiber or PON standards (using an
SFP-based or external ONT as required that is compatible with the OLT).
The ITU-T G.9960 G.hn Wave-2 standard leverages the existing telephone wiring
(UTP, CAT-3 or CAT-5/5e) or RG-6/RG-59 coax cabling to deliver a Gigabit
Internet service to each subscriber without the cost, complexity and delays
associated with in-building fiber installation. G.hn is an Access technology for
Operators looking to simplify their access network and backend infrastructure with
an Ethernet-like technology that is highly scalable without some of the inherent
complexity of DSL-related technologies. With G.hn, Operators deliver advanced
services such as Gigabit High Speed Residential Internet and 4K IPTV without the
high capital and operational expenses associated with a fiber retrofit. Each G.hn
subscriber port supports up to 1.7 Gbps of dynamically allocated bandwidth for
near symmetrical Gigabit services over the existing telephone wire or coaxial
cable. The Positron GAM solution is MEF CE 2.0 compliant and is ideally suited to
deliver Business Ethernet services in an MDU and/or MTU deployment.
Note: Read Chapter 4 Safety and Warnings before proceeding.

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1.2 GAM Connections
This section provides an overview of the connectors inside the GAM-8-MX and
GAM-4-MX. Please refer to section 2 for a detailed step-by-step installation
procedure.
1.2.1 Power Connection
The GAM-8-MX and GAM-4-MX are locally powered. If you need a Reverse
Powered Fed (RPF) GAM, please refer to the GAM-4-MRX or GAM-8-MRX
products.
Figure 1: GAM Power Input Connector
1.2.2 Ethernet (SFP+) Port
Figure 2: GAM SFP+ Connectors
The GAM has one (1) SFP+ ports that support any MSA-compliant SFP/SFP+
modules. (Fiber: 1G, 10G and Copper RJ-45: 100M, 1G).
Important note: When connecting the SFP+ port to a Passive Optical Network
(PON) fiber connection, please make sure to use an Optical Network Unit (ONU)
approved by the OLT vendor you are using.
12Vdc power connector
SFP+ connector cage

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1.2.3 G.hn Ports
The GAM-8-MX has 8 G.hn ports and the GAM-4-MX has 4 G.hn ports.
110 Punch-down blocks are used to connect the copper pairs to each of the G.hn
ports. You can connect either a single pair (SISO mode) or two (2) pairs (MIMO
mode) per port. The 110 Punch-down blocks are located at the top left portion
inside the GAM IP67 enclosure.
Note: fast and resettable lightning protection is pre-installed on the GAM
motherboard for each copper pair.
Figure 3: Inside view of GAM-8-MX with 110 Punch-down Block
1.2.4 Local management ports
The GAM devices have two (2) local management ports located near the top right
corner of the enclosure.
110 Punch-down
blocks for G.hn ports

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Figure 4: Local Management Ports are at the top right corner of the GAM circuitry
The CRAFT port is a standard serial (V.24, 115200, 8, N, 1)) port that provides
access to the command line interface of the GAM device.
The pinout of the RJ-45 serial port is compatible with the popular Cisco pinout as
per the following diagram:
Figure 5: GAM Serial Management Port pinout
The MGMT port is a 10/100/1000Base-T Ethernet port provides access to the WEB
GUI interface using a standard WEB browser or an SSH interface to the command
line interface of the GAM device.
Craft (serial) port
Gigabit Ethernet
Management port

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1.2.5 GAM LED Indicators
The GAM uses three (3) LED indicators inserted in the cover of the IP67 enclosure
to provide information about its global status and operating mode.
Figure 6: GAM global status LEDs
LED
Condition
Function
RPF
Off
On
Always OFF since the GAM-4-MX
and GAM-8-MX do not support a
Reverse Power Feed
SRV
Solid Green
Solid Yellow
Solid Red
System OK
GAM is starting up
No Internet Connection
STA
Solid Green
Solid Yellow
Blinking Yellow
Solid Red
Normal
Minor Alarm Active
Firmware Update in Progress
Critical or Major Alarm Active
Table 1: GAM Global LED indicators

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Each of the G.hn ports has two (2) status LEDs.
Figure 7: G.hn Ports LEDs
The top row of LEDs indicates the state of the G.hn link while the bottom row
indicates the presence of the Reverse Power Feed source (from a G1001-MR
device at the customer end).
LED
Condition
Function
G.hn ports
Off
Blinking
On
Disabled or Link Down
Bad or low speed G.hn link
Link is Up
G.hn port power
Off
Green
Always ON since the GAM-4-MX
and GAM-8-MX is locally
powered
Table 2: G.hn Ports LED indicators
G.hn Port LEDs

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The SFP+ port of the GAM has a dedicated status LED located underneath the
SFP+ cage.
Figure 8: SFP+ LED
LED
Condition
Function
Located under SFP+
connector
Off
Green
Blinking green
Disabled or Link is Down
Link is Up
Link Activity
Table 3: SFP+ LED indicator
1.2.6 GAM Reset Button
Press the RST button to reset the GAM. When depressed for two (2) to ten (10)
seconds, it will perform a cold reboot of the GAM. When depressed for more than
ten (10) seconds, it will return the GAM device to its original factory default settings
and will perform a cold reboot of the GAM.
SFP+ LED

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Figure 9: GAM Reset (RST) button
RESET
button

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Chapter 2
______________________________________
Step by Step Installation

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2.1 Step by Step Installation Procedure
Here is a step-by-step procedure to install the GAM-8-MX or GAM-4-MX outdoor
unit.
Note: The Copper cable binder shown does not ship with the GAM-8-MX or GAM-4-MX
Let us begin with the insertion and connection of the copper binder cable.
Step 1: The GAM-8-MX / GAM-4-MX ships with
a protective insert to prevent dust from entering
the enclosure via the left grommet used for the
copper cable binder.
Step 2: Remove the protective (red) insert by
removing the sealing nut of the cable gland

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Step 3: insert the copper cable binder through
the sealing nut and the cable gland opening.

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Step 4: pull on the copper binder cable to make
sure you have enough length to reach the 110
punch-down blocks at the top of the enclosure.
Once done, make sure to tighten the sealing nut
to maintain IP67 protection.
Step 5: select the pairs to connect and bend
the remaining (unused) pairs along the copper
cable binder section inside the enclosure. This
is useful should you need to connect more pairs
or use different pairs.
Step 6: position the pairs: 1 per port when
operating in SISO mode and 2 per port when in
MIMO mode.

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Step 7: using a punch down tool, install each
pair in their respective position. Make sure to
remove any wire debris from inside the
enclosure.
Step 8: use a tie-wrap to secure the unused
pairs along the copper cable binder.

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You are now ready to connect the AC-DC Power supply included as part of your
GAM-4-MX / GAM-8-MX kit.
Step 9: The 12Vdc connector is located at the
top right corner of the GAM enclosure. Pull on
the male power connector that ships pre-
installed in unit.
Step 10:using 18 AWG wire, insert the power
cable through the rightmost cable gland. You
can then connect the 12Vdc power pair to the
male power connector and tighten with a small
flat screwdriver.

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Step 11:insert the male power connector into
the female receptacle. You can now connect
the other end of the 12Vdc / 4A adapter to the
local 110-220VAC power source.
The next step is the insertion of the SFP or SFP+ module that provides the uplink
connection.
Step 12:Insert the SFP or SFP+ module into
the SFP cage at the top right section of the
GAM enclosure. Make sure to lock the SFP /
SFP+ module in place.
Note: the SP cage can accommodate modules
that draw up to 3W of power.