Raven 40710D-600 User manual

Raven 40710D-600
Switched Network Interface
Users Manual
Raven Electronics Corporation
©
2002 Raven Electronics Corporation. All rights reserved. Rev. 02

Table of Contents
CHAPTER 1 INTRODUCTION ...............................................................................1
General Information ...................................................................... 1
Safety Warning ............................................................................... 1
Raven Electronics’ Warranty ........................................................ 1
System Description......................................................................... 2
FCC Part 68 Information................................................................2
CHAPTER 2 INSTALLING and SETTING UP THE SNI SHELF................................4
Equipment Needed for Installation ............................................. 4
Mounting Unit in Rack ................................................................... 4
Hooking Up Connections.............................................................. 5
Programming the DTMF Address Decoder ................................ 6
CHAPTER 3 POWERING UP THE SNI SHELF.........................................................7
CHAPTER 4 OPERATION...................................................................................... 8
Accessing the PSTN or PABX......................................................... 8
Accessing the Service Channel Network from PSTN or PABX .8
Ending a Call .................................................................................. 8
CHAPTER 5 TROUBLESHOOTING and ALIGNMENT ..........................................9
Equipment Needed for Troubleshooting and Alignment ........9
41675 Switched Network Interface ............................................. 9
41632 DTMF Address Decoder ...................................................11
41620 Power Supply.....................................................................11
CHAPTER 6 SPECIFICATIONS............................................................................12
TABLE A DIAGRAMS.....................................................................................13
Back Panel Diagram....................................................................13
40710D-600 Wiring Diagram .......................................................14
41620 Power Supply Block Diagram.......................................... 15
41632 DTMF Address Decoder Block Diagram........................16
41675 Switched Network Interface Block Diagram ................17
TABLE B INSTALLER CONNECTIONS ...........................................................18
APPENDIX A OPTIONS.........................................................................................19
APPENDIX B GENERAL CONDITIONS OF SALES ...............................................20
i

CHAPTER 1 INTRODUCTION
General Information
Thank you for purchasing the 40710D-600 Switched Network Interface (SNI)
Shelf from Raven Electronics Corporation. Please contact us if you have any
questions, concerns, product ideas, or ideas to improve this manual. We can
be contacted at:
Raven Electronics Corporation
400 Edison Way
Reno, Nevada 89502
[phone] Phone
[phone] Fax
[email protected]
[email protected]
www.ravencomm.com
!
Please be Electro-Static Discharge (ESD) protected before
starting any procedures contained in this manual.
Raven Electronics’ Warranty
This warranty expressly precludes any liability by Raven for consequential damages however
arising after delivery to the purchaser of the affected equipment, and is limited to the
expressed warranty, excluding all implied warranties including merchantability. All
equipment manufactured by Raven is warranted against defective materials and
workmanship for a period of two (2) years from the date of delivery to the original purchaser
or end-user. Liability under this warranty is limited to servicing, adjusting, repairing or
replacing, as necessary, any equipment returned to the factory, transportation prepaid for
that purpose. Factory examination must disclose a manufacturing defect. Repaired or
replaced items will be returned to the purchaser surface freight prepaid within the
continental U.S.A.
This warranty does not extend to any equipment which has been subjected to transportation
damage, misuse, neglect, accident, improper installation, or any other circumstances
reasonably beyond the control of Raven. Beyond the warranty period, repairs will be billed
to the purchaser at cost. In such cases, an estimate will be submitted for approval before
repair is initiated. Repaired equipment will be returned to the purchaser with transportation
charges collect, unless agreed to between the purchaser and Raven.
Safety Warning
1

CHAPTER 1 INTRODUCTION
System Description
The 40710D-600 Switched Network Interface System includes a 41675
Switched Network Interface module, which provides the interface between
a 4-wire service channel and a 2-wire subscriber line or a loop start PABX. A
41632 DTMF Address Decoder monitors the 4-wire input of the 41675 module
for DTMF and sets the 41675 module to the off-hook condition when the
correct DTMF code is detected.
41675 Switched Network Interface
The Raven 41675 Switched Network Interface provides ring detection and
loop current sink to interface to a 2-wire subscriber line or PBX system. The
41675 module has a 4-wire to 2-wire hybrid circuit as well as amplifiers to
provide isolation and level matching. Line Build Out (LBO) is available on the
rear panel to assist in hybrid balance adjustment, if required.
In normal operation, the 41675 module is reset by a momentary loss of loop or
by a DTMF “#” (All Clear Code). Should these fail to reset the 41675 module,
a VOX controlled time-out circuit will prevent the module from holding the 2-
wire line in the off-hook condition indefinitely. The VOX circuit monitors the 4
Wire (4W) Receive (RCV) port, and if no Voice Frequency (VF) energy is
detected for the user-programmed time period, the module is reset to the
on-hook condition.
FCC Part 68 Information
This equipment complies with Part 68 of the FCC Rules. The FCC Part 68 Label
is located on the component side of the module printed circuit board. This
label contains the FCC Registration Number and Ringer Equivalence Number
(REN) for this equipment. If requested, this information must be provided to
your telephone company.
The REN is useful to determine the quantity of devices you may connect to
your telephone line and still have all of those devices ring when your
telephone number is called. In most, but not all areas, the sum of the RENs of
all devices connected to one line should not exceed five (5.0).
2

CHAPTER 1 INTRODUCTION
FCC Part 68 Information (cont.)
If this module causes harm to the telephone network, the telephone company
will notify you in advance that temporary discontinuance of service may be
required. But if advance notice isn’t practical, the telephone company will
notify you as soon as possible. Also, you will be advised of your right to file a
complaint with the FCC if you believe it is necessary.
The telephone company may make changes in its facilities, equipment,
operations or procedures that could affect the proper functioning of this
equipment. If they do, you will be notified in advance in order that necessary
modifications can be made to maintain uninterrupted service.
If trouble is experienced with this module, please contact Raven Electronics
Corporation at the address on page 1. If the equipment is causing harm to
the telephone network, the telephone company may request that the
equipment be disconnected until the problem is resolved. Do not attempt to
service this module. It does not contain any user serviceable components.
41632 DTMF Address Decoder
The Raven 41632 DTMF Address Decoder monitors the 4-wire input of the
41675 Switched Network Interface and provides detection and address
decoding of DTMF signals. Upon detection of the correct DTMF address
code assigned to the model 40710D-600 SNI Shelf, the unit is set to the off-
hook state and dial-tone is provided from the 2-wire line.
41620-01 Power Supply
The Raven 41620-01 Power Supply provides regulated –20 VDC output from
an unregulated input voltage source (-24 VDC to –56 VDC). Foldback
circuitry and reverse polarity protection are included to protect the 41620
circuitry as well as its load. The maximum current output is approximately 1.2
amperes, which is the point that foldback begins. An On/Off power switch
and a fuse in series with the input are also provided.
3

CHAPTER 2 INSTALLING and SETTING UP THE SNI SHELF
Equipment Needed for Installation
Rackmount Equipment (to install unit in a rack):
• Screws
• Washers (optional)
Audio Connections:
• 24-Gauge Twisted Pair Wire
Power Connections:
• 18-Gauge Wire
Mounting Unit in Rack
Please note, Raven supplies the hardware for the mounting on the chassis,
but not on the rack. The flanges included with your Switched Network
Interface (SNI) Shelf are not interchangeable between 19” and 23”. Please
specify the flange size needed when ordering.
1. Hold unit in place in the rack.
2. Place a washer and screw in one of the four holes and tighten it to
the rack. (Please refer to the picture below.)
3. Repeat Step 2 until all four screws are in place.
4
Rack
SNI Shelf
Washer (optional)

CHAPTER 2 INSTALLING and SETTING UP THE SNI SHELF
Hooking Up Connections
With the source power turned off, use the following instructions to hook up
your SNI Shelf. A flathead screwdriver is needed to loosen and tighten the
screw lugs. You may also refer to the chart below (also found in Table B):
Be sure Power is turned OFF.
VF Ports (4-wire)
• Connect Transmit (XMT—B9, B10) on the SNI Shelf to Receive (RCV) on the
customer provided equipment (typically an orderwire, radio, or fiber optic
equipment) with a twisted pair of wire.
• Connect Receive (RCV—B1, B2) on the SNI Shelf to Transmit (XMT) on the
customer provided equipment (typically an orderwire, radio, or fiber optic
equipment) with a twisted pair of wire.
2-Wire Connection
• Connect a twisted pair of wire from the 2W SNI (B4, B5) to the PSTN phone
line or to a PABX or plug an RJ11 into the SJ2 2W SNI jack.
5
FUNCTION REAR TERMINAL
CONNECTIONS SUGGESTED WIRE
Transmit (XMT) B9, B10 24 GA
Receive (RCV) B1, B2 24 GA
2W SNI B4, B5 24 GA
Power (PWR) A1 -24 TO -56VDC IN 18 GA
Power (PWR) A2 Ground 18 GA
Customer Provided Equipment
40710D-600 Switched Network Interface Shelf
(Rear View)
B
A
RCV
2W
SNI LBO XMT
M
LEAD
GND-24 TO -56 VDC IN
NO C
110
SJ2
2W SNI
SJ1
DC POWER
INPUT
110
Customer
Power
Source
-+
RCV
XMT
PSTN

CHAPTER 2 INSTALLING and SETTING UP THE SNI SHELF
Programming the DTMF Address Decoder
To program the 41632 DTMF Address Decoder, perform the following steps. A unique DTMF
code must be assigned to the Orderwire so only that Orderwire responds to the call.
1. Switch, SW-5, should be set for the number of digits in your code (i.e., 1, 2, 3, or 4
digits). Be sure you have only one setting selected.
2. Switches SW1 through SW4 correspond to digits 1-4 of your code. SW1 through
SW4 are found on the module from right to left, when viewing the board from the
front. Digit 1 – 4 on the switch are labeled from left to right, corresponding to
switch positions 1 – 4. You will need to refer to the chart below to program the
correct codes.
ON1234
1234
0101
1000
0100
1100
0010
1010
0110
1110
0001
1001
1101
0011
1011
0111
1111
0000
C
D
Desired
DTMF
Digit
All Call (*)
All Clear (#)
A
B
6
7
8
9
2
3
4
5
1 = on, 0 = off
Switch Positions
0
1
Example:
The code chosen for this unit is 180.
1. Set SW1 to “1” (on-off-off-off)
2. Set SW2 to “8” (off-off-off-on)
3. Set SW3 to “0” (off-on-off-on)
Example Drawing:
O1 2 3 4
N
SW5
TIMED CA
O1 2 3 4
N
SW4
DIGIT 4
O1 2 3 4
N
SW1
DIGIT 1
O1 2 3 4
N
SW2
DIGIT 2
O1 2 3 4
N
SW3
DIGIT 3
3-di
g
its Null / Off “0” “8” “1”
6

CHAPTER 3 POWERING UP THE SNI SHELF
Powering Up the SNI Shelf
Reinstall the 41632 card, if previously removed, before performing the
following steps. Also, make sure the source power supply is still turned off.
1. With the front panel removed, verify the toggle switch is in the “off”
position (to the right).
2. Turn on the external power source.
3. Flip the toggle switch to the “on” position (to the left).
4. The green light on the 41620 card (Power Supply) should be
illuminated. If not, please refer to Chapter 5, Troubleshooting and
Alignment.
5. Reattach the front panel.
7

CHAPTER 4 OPERATION
Accessing the Public Switched Telephone Network (PSTN) or PABX
Terminals within the service network channel can access the 2-wire
equipment by dialing the DTMF code assigned to the 41675 Switched
Network Interface as programmed on the Address Decoder. This will
activate the 41675 module to the off-hook state. When dial-tone is returned
to the user by the 2-wire equipment, the desired number may be dialed using
DTMF digits.
Accessing the Service Channel Network from the PSTN or PABX
A user may call into the service channel network from the public switched
network by dialing the number of the 2-wire line connected to the 40710D-
600 system. The 41675 Switched Network Interface module will detect ring
voltage on the 2-wire line and automatically activate (go off-hook). The user
will hear at least one cycle of ringback before the 41675 module activates.
When ringback ceases, the 41675 module has answered the call and the
user will hear a brief confirmation tone. The user can then dial the DTMF
code of the desired terminal within the service channel.
Ending a Call
When a call is terminated, one of the users should send the DTMF “#” digit (All
Clear), which will return the 41675 SNI module to the idle (on-hook) condition.
A loop detect circuit is included on the 41675 module which resets the
module to idle when the momentary loss of loop occurs (typically within 30
seconds after the distant end hangs up). A VOX time-out circuit
(programmable for 1 to 15 minutes) is included on the 41675 module to
prevent holding the 2-wire line off-hook indefinitely, in the event the “#” key is
not entered or the distant end fails to reset their 41675 to the on-hook state.
Factory default is set to 1 minute. If no voice energy is detected from the
Service Channel network during the programmed time period, the 41675
module will automatically reset to the idle condition.
8