SDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)

SDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#OverviewSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#SpecificationsSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Installation and operation

SDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Front panelFront panel dip switch settings:SDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#LCD displaySDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Rear panelSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#E1 port numbersSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Sangoma High Density ConnectorSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Port mappingSDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#RJ45 pinout

SDH Mux Fiber Multiplexer (This page is no longer valid - obsolete)#Determine Ethernet IP address from LCD

 

Overview

Sangoma SDH-Mux multiplexes 63 E1 signals into a STM-1 stream, with TU-12stream, cross-connect capability. 

This compact multiplexer is hosted in a standard 19”1U rack mount box.As a standard and compact SDH TM device, STM1-Mux is best suited to applicationswhere high-density E1 ports are needed to interface with a SDH network through STM-1 fiberoptic connections.

 

 

Specifications

Standard STM-1 optical ports, wide range of interface options, including dual or single fiber transmission, wavelengths and distances, as well as FC/SC connectors;Range up to 40 km,  Fiber Connector

Connector: SC duplex fiber connectorFiber mode: Single mode fiberFiber optic: 1310 nm.Fiber size: SC 9/125nm ( ) Back to back cable example on Amazon

Standard SDH ITU mapping of 63 E1 signals with TU-12 cross-connect;Revertive and nonrevertive unidirectional 1+1 APS supported;ALS function for operation safety;Selectable clock sources, including internal, STM-1 line, E1 tributary, and external;ITU-T G..703 compliant E1 ports, 75/120 options, with on-line error monitoring and loop-back function;NM(10Base-T/RJ45) and RS-485 network management interfaces;Compact 19 inch 1 U box;-48V DC / 100~240V AC / +24V DC and redundant power supply options;Remote AC power loss monitoring;LCD display for system configuration and alarm;

Installation and operation

The SDH-Mux is a simple plug-and-play device with minimum requirement to configure and setup.

1. 2. 3. 4.

Plug in the RJ45 TDM ports to Sangoma NSG VoIP Gateway using  .custom high density cablePlug in the STM1 fiber to SDH port 1Plug in the power cableTurn on power to AC or DC position depending on power supply used.

By default STM1 Port maping will be in ITU-T mode.

Front panel

The device's front panel is shown as picture below:

The lights on front panel hold the real-time status of the device. Here is the chart ofmeanings of the indications:

 

Label Color Definition Note

 PWR Green Power indication.Onpower onOffpower off or failure

 Green light will turn on when proper power has been plugged in.

 Alarm D    Yellow   Not used  

 Alarm P   Yellow Not used  

 LOS 1 Red Status of optical 1 port

On: loss of signal

Off: normal

Wink: loss of STM1 frame

 

 LOS2 Red  Status of optical 1

On: loss of signal

Off: normalWink: loss of STM1 frame

 

 NM Green/Yellow Green light:

On: link correct

Off: link failure

Yellow light:

On: full duplex

Off: half duplex

Wink: collission

 NM port is for RJ45 Ethernet management console

 

Front panel dip switch settings:

The 4 switches on the right of front panel have the configurations as described in below chart:

 

Switch name Description

LOPL Local E1 loopback control to set all 63 E1 to perform Rx to Tx loopback inside the E1 ports.

Down position: set loopback on

Up position: set loopback off

LOPR Remote E1 loopback control to set all 63 E1 ports in Tx to Rx loopback to remote unit (far end).

This option only works in point-to-point link.

Down position: set loopback on

Up position: set loopback off

CKSL Clock source selection.

Down position: use internal clock

Up position: use clock source selected by software

MASK E1 alarm mask setting

Down position: mask off current E1 alarms at the time of switching

Up position: cancel current alarm mask

 

Note:

1. The dips, except CKSL, are ACTION SENSITIVE ONLY, that is, only the switch transitionwill activate the functions described in the table, their turn-on state has no effect.

2. The local and remote loop-backs of all E1 ports are provided for diagnostic purposes. Thetwo types of loop-backs are equivalent to STM-1 loop-backs as shown below:

3. Alarm mask masks off the currently active E1 defects. For example, if an E1 port isreporting AIS at the time of mask command, AIS will not be reported as alarm conditionfor this port thereafter, but LOS condition on that port will still cause alarm.

 

LCD display 

The LCD screen is designed to show E1 alarms.The unmasked current E1 alarms are displayed in four 2×4 arrays, corresponding to the four8-port RJ45 modular jacks on the rear panel. Each array cell represents a RJ45 socket. Since everyRJ45 socket provides interface for 2 E1’s, each array cell has 2 symbol positions corresponding tothe 2 E1’s.

Both E1 signal loss (LOS) and E1 alarm indication signal (AIS) are displayed on the LCDscreen. Symbols are used to represent these two alarm status. A small square indicates AIS, * indicates LOS. Normal and masked ports are empty. The above figure has the examples of three types of E1 port status.When unmasked E1 alarm conditions exist, the LED backlight will be on, and alarm displaysimilar to that  will last for 20 seconds, followed by a screen showing the legends for 2seconds, and then repeat.If there are no unmasked alarms for the 63 E1 ports, a logo be displayed for 60 secondswith the background light off, then IP address for 30 seconds, followed by another 30 seconds ofsoftware and firmware version number. This display sequence will repeat until some E1 alarmsarise. In that case, the alarms will be displayed.

Rear panel

E1 ports, power switches and power input ports are located on the rear panel.

E1 port numbers

E1 ports are allocated as described below:

 

1/2 5/6 9/10 13/14

3/4 7/8 11/12 15/16

17/18 21/22 25/26 29/30

19/20 23/24 27/28 31/32

33/34 37/38 41/42 45/46

35/36 39/40 43/44 47/48

49/50 53/54 57/58 61/62

51/52 55/56 59/60 CK/63

Due to space constrainttwo E1 ports are allocated to each RJ45 socket. E1 port numbering is

from top to bottom, and then from left to right. Therefore, the upper left RJ45 jack corresponds tothe first and second E1 ports, while the lower left RJ45 corresponds to the third and fourth E1ports, and so on. 

 

Sangoma High Density Connector

 

Sangoma High Density connector was design to connect 16 E1 ports of the SDH Mux to Sangoma A116 Card.

   

 

Port mapping

 SDH-Mux use the ITU KLM port mapping arrangement as below:

STM1Mux Port

TUG-3 TUG-2 TU12 KLM   SMTMux Port

TUG-3 TUG-2 TU12 KLM   SMT1Mux Port

TUG-3 TUG2 TU12 KLM

1 1 1 1 1.1.1   22 2 1 1 2.1.1    43 3 1 1 3.1.1

2 1 1 2 1.1.2   23 2 1 2 2.1.2   44 3 1 2 3.1.2

3 1 1 3 1.1.3   24 2 1 3 2.1.3    45 3 1 3 3.1.3

4 1 2 1 1.2.1   25 2 2 1 2.2.1   46 3 2 1 3.2.1

5 1 2 2 1.2.2   26 2 2 2 2.2.2   47 3 2 2 3.2.2

6 1 2 3 1.2.3   27 2 2 3 2.2.3   48 3 2 3 3.2.3

7 1 3 1 1.3.1   28 2 3 1 2.3.1   49 3 3 1 3.3.1

8 1 3 2 1.3.2   29 2 3 2 2.3.2   50 3 3 2 3.3.2

9 1 3 3 1.3.3   30 2 3 3 2.3.3   51 3 3 3 3.3.3

10 1 4 1 1.4.1   31 2 4 1 2.4.1   52 3 4 1 3.4.1

11 1 4 2 1.4.2   32 2 4 2 2.4.2   53 3 4 2 3.4.2

12 1 4 3 1.4.3   33 2 4 3 2.4.3   54 3 4 3 3.4.3

13 1 5 1 1.5.1   34 2 5 1 2.5.1   55 3 5 1 3.5.1

14 1 5 2 1.5.2   35 2 5 2 2.5.2   56 3 5 2 3.5.2

15 1 5 3 1.5.3   36 2 5 3 2.5.3   57 3 5 3 3.5.3

16 1 6 1 1.6.1   37 2 6 1 2.6.1   58 3 6 1 3.6.1

17 1 6 2 1.6.2   38 2 6 2 2.6.2   59 3 6 2 3.6.2

18 1 6 3 1.6.3   39 2 6 3 2.6.3   60 3 6 3 3.6.3

19 1 7 1 1.7.1   40 2 7 1 2.7.1   61 3 7 1 3.7.1

20 1 7 2 1.7.2   41 2 7 2 2.7.2   62 3 7 2 3.7.2

21 1 7 3 1.7.3   42 2 7 3 2.7.3   63 3 7 3 3.7.3

 

 

RJ45 pinout

 

RJ45 ports to hold double E1 socket has the pinout definition as below:

 

RJ45 pin E1 pin

1 E1#1's Rx-

2 E1#1's Rx+

3 E1#1's Tx+

4 E1#1's Tx-

5 E1#2's Rx-

6 E1#2's Rx+

7 E1#2's Tx+

8 E1#2's Tx-

 

 

To make a cross cable between STM1-MUX and A108 port, the shortcut is to make sure the cable's pinout mapping to be:

A108 side STM1-Mux side

1 4

2 5

3 2

4 1

5 7

6 8

7 6

8 3

 

 

Determine Ethernet IP address from LCD

 

Set the MASK dip switch to "Down" positionWait 60 secondsThe IP address of the Ethernet Port will be displayed on the LCDSet the MASK dip switch back to "UP" position