Patton electronics 2715RC User manual

USER
MANUAL
MODEL 2715RC
NetLink-E1:
E1/Fractional E1 NTU
Rack Mount Card
SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
http://www.patton.com
Part# 07M2715RC
Doc# 08607U2-001
Rev. C
Revised 1/22/08
Dear Valued Customer,
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appreciate your business. I trust that you find this user manual helpful.
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PATTON MODEL 2715RC
TABLE OF CONTENTS
Section Page
1.0 General Information...............................................................2
1.1 Warranty Statement
1.2 Radio and TV Interference
1.3 CE and Telecommunication Approvals
1.4 Servie
2.0 General Information...............................................................4
2.1 Features
2.2 Description
3.0 Configuration .........................................................................5
3.1 Front card Configuration
3.2 Configuring the 1000RCM13348C Rear Card
4.0 Installation ..........................................................................11
4.1 The Model 1001R14 rack Chassis
4.1.1 The Rack Power Supply
4.2 Installing the Model 2715RC Into the Chassis
4.3 V.35 Terminal Connection
4.4 Connecting the Network and the V.35 Interfaces
4.4.1 Network Interface Connection
5.0 Operation.............................................................................14
5.1 Power-Up
5.2 LED Status Monitors
5.3 Loop (V.54) Diagnostics
5.3.1 Operating Local Loopback (LL)
5.3.2 Operating Remote Digital Loopback (RL)
5.4 Bit Error Rate (V.52) Diagnostics
Appendix A - Specifications ........................................................18
Appendix B - Factory Replacement Parts and Accessories.......19
Appendix C - Interface Pin Assignments ....................................20
1 2

PATTON MODEL 2715RC
TABLE OF CONTENTS
Section Page
1.0 General Information...............................................................2
1.1 Warranty Statement
1.2 Radio and TV Interference
1.3 CE and Telecommunication Approvals
1.4 Servie
2.0 General Information...............................................................4
2.1 Features
2.2 Description
3.0 Configuration .........................................................................5
3.1 Front card Configuration
3.2 Configuring the 1000RCM13348C Rear Card
4.0 Installation ..........................................................................11
4.1 The Model 1001R14 rack Chassis
4.1.1 The Rack Power Supply
4.2 Installing the Model 2715RC Into the Chassis
4.3 V.35 Terminal Connection
4.4 Connecting the Network and the V.35 Interfaces
4.4.1 Network Interface Connection
5.0 Operation.............................................................................14
5.1 Power-Up
5.2 LED Status Monitors
5.3 Loop (V.54) Diagnostics
5.3.1 Operating Local Loopback (LL)
5.3.2 Operating Remote Digital Loopback (RL)
5.4 Bit Error Rate (V.52) Diagnostics
Appendix A - Specifications ........................................................18
Appendix B - Factory Replacement Parts and Accessories.......19
Appendix C - Interface Pin Assignments ....................................20
1 2

1.3 CE AND TELECOMMUNICATION APPROVALS
The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the Union European
(EU). A Certificate of Compliance is available by contacting Technical
Support.
The Model 2715RC is in compliance with the Telecommunication
technical requirements CRT-12; 2.048 Mbps digital unstructured
leased line (D2048U) attachment requirements for terminal equipment
interface.
The Model 2715RC also meets the Telecommunication technical
requirements CTR-13; 2.048 Mbps digital structured leased lines
(D2048S) attachment requirements for terminal equipment interface.
1.4 SERVICE
All warranty and nonwarranty repairs must be returned freight pre-
paid and insured to Patton Electronics. All returns must have a Return
Materials Authorization number on the outside of the shipping contain-
er. This number may be obtained from Patton Electronics Technical
Support: [phone]; http://www.patton.com; or, support@pat-
ton.com.
NOTE: Packages received without an RMA number will not be
accepted.
Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 2715RC. Technical Service hours: 8AM to 5PM EST, Monday
through Friday.
3 4

1.3 CE AND TELECOMMUNICATION APPROVALS
The CE symbol on your Patton Electronics equipment indicates
that it is in compliance with the Electromagnetic Compatibility (EMC)
directive and the Low Voltage Directive (LVD) of the Union European
(EU). A Certificate of Compliance is available by contacting Technical
Support.
The Model 2715RC is in compliance with the Telecommunication
technical requirements CRT-12; 2.048 Mbps digital unstructured
leased line (D2048U) attachment requirements for terminal equipment
interface.
The Model 2715RC also meets the Telecommunication technical
requirements CTR-13; 2.048 Mbps digital structured leased lines
(D2048S) attachment requirements for terminal equipment interface.
1.4 SERVICE
All warranty and nonwarranty repairs must be returned freight pre-
paid and insured to Patton Electronics. All returns must have a Return
Materials Authorization number on the outside of the shipping contain-
er. This number may be obtained from Patton Electronics Technical
Support: [phone]; http://www.patton.com; or, support@pat-
ton.com.
NOTE: Packages received without an RMA number will not be
accepted.
Patton Electronics' technical staff is also available to answer any
questions that might arise concerning the installation or use of your
Model 2715RC. Technical Service hours: 8AM to 5PM EST, Monday
through Friday.
3 4

DIP Switches S1 - S8
The configuration switches on S1 - S8 may be set to allow config-
uration for a wide range of applications. Default settings of S1 through
S8 are shown in the table below. Descriptions of each switch follow
the table.
Switch SW1: Line Coding
Use Switch SW1 to control the Network Line Coding options. Set
these options to be the same as the Line Coding given to you by your
Service Provider. If you are using two Model 2715RCs together as
short range modems, set both units identically, preferably to HDB3.
SW4 Line Framing & Coding
Off HDB3
On AMI
Line Coding Options:
High Density Bipolar 3 (HDB3): In HDB3 coding, the transmitter
deliberately inserts a bipolar violation when excessive zeros in
the data stream are detected. The receiver recognizes these
special violations and decodes them as zeros. This method
enables the network to meet minimum pulse density require-
ments. Use HDB3 unless AMI is required in your application .
Alternate Mark Inversion (AMI): AMI coding does not inherently
account for ones density. To meet this requirement, the user
should ensure that the data inherently meets pulse density
requirements.
6
3.0 CONFIGURATION
Two cards make up a single Model 2715RC G.703 Converter - a
front function card and a rear interface card. Each may require config-
uration depending upon the product application. This section describes
the location and orientation of the Model 2715RC’s configuration
switches and jumpers, and provides descriptions for all settings.
3.1 FRONT CARD CONFIGURATION
The Model 2715RC front card has a single bank of eight DIP
switches located on the top of the printed circuit board. Figure 1,
below, shows the position of the switches on the board.
Changing the DIP Switch Settings
Figure 2 shows the orientation of the DIP switches with respect to the
“ON” and “OFF” positions.
5
SWITCH SET SUMMARY TABLE
Position Function Factory Default Selected Option
SW1 Line Coding Off HDB3
SW2 CAS Multiframe Off Disabled
SW3 CRC-4 MF/Clock Mode Off Disabled
SW4 Clock Mode Off Network
SW5 DTE Rate Off
SW6 DTE Rate Off
SW7 DTE Rate Off
SW8 DTE Rate Off
2.048 Mbps
Clear
Channel
}
Figure 1. Model 2715RC board, showing DIP switch location
DIP Switch ON OFF
8
1
Figure 2. Close up of the configuration switches
NOTE: The ON position is oriented toward the front of the Model 2715RC.
ON OFF
Front Panel

DIP Switches S1 - S8
The configuration switches on S1 - S8 may be set to allow config-
uration for a wide range of applications. Default settings of S1 through
S8 are shown in the table below. Descriptions of each switch follow
the table.
Switch SW1: Line Coding
Use Switch SW1 to control the Network Line Coding options. Set
these options to be the same as the Line Coding given to you by your
Service Provider. If you are using two Model 2715RCs together as
short range modems, set both units identically, preferably to HDB3.
SW4 Line Framing & Coding
Off HDB3
On AMI
Line Coding Options:
High Density Bipolar 3 (HDB3): In HDB3 coding, the transmitter
deliberately inserts a bipolar violation when excessive zeros in
the data stream are detected. The receiver recognizes these
special violations and decodes them as zeros. This method
enables the network to meet minimum pulse density require-
ments. Use HDB3 unless AMI is required in your application .
Alternate Mark Inversion (AMI): AMI coding does not inherently
account for ones density. To meet this requirement, the user
should ensure that the data inherently meets pulse density
requirements.
6
3.0 CONFIGURATION
Two cards make up a single Model 2715RC G.703 Converter - a
front function card and a rear interface card. Each may require config-
uration depending upon the product application. This section describes
the location and orientation of the Model 2715RC’s configuration
switches and jumpers, and provides descriptions for all settings.
3.1 FRONT CARD CONFIGURATION
The Model 2715RC front card has a single bank of eight DIP
switches located on the top of the printed circuit board. Figure 1,
below, shows the position of the switches on the board.
Changing the DIP Switch Settings
Figure 2 shows the orientation of the DIP switches with respect to the
“ON” and “OFF” positions.
5
SWITCH SET SUMMARY TABLE
Position Function Factory Default Selected Option
SW1 Line Coding Off HDB3
SW2 CAS Multiframe Off Disabled
SW3 CRC-4 MF/Clock Mode Off Disabled
SW4 Clock Mode Off Network
SW5 DTE Rate Off
SW6 DTE Rate Off
SW7 DTE Rate Off
SW8 DTE Rate Off
2.048 Mbps
Clear
Channel
}
Figure 1. Model 2715RC board, showing DIP switch location
DIP Switch ON OFF
8
1
Figure 2. Close up of the configuration switches
NOTE: The ON position is oriented toward the front of the Model 2715RC.
ON OFF
Front Panel

Switch SW2: CAS Multiframe
CAS multiframe uses Timeslot 16 (TS16) to send multiframe (MF)
alignment data. In CAS MF, a multiframe is defined as 16 frames,
where a frame consists of 32 64kb/s timeslots, numbered 0 to 31.
TS16 of the first frame in the MF contains the CAS MF alignment word
in the upper four bits. The alignment word is always 0000 (binary). The
2715RC does not perform any signaling in TS16 other than to insert
the MF alignment word, in order to maintain MF alignment. When CAS
MF is disabled, the unit transmits user data in TS16; therefore, up to 31
channels are available for user data. When it is enabled, TS16 is not
available to the user. In this case, the user can use up to 30 channels
for data. CAS MF can be used with CRC-4 MF or by itself. When en-
nabled, both units must employ CAS MF; if one unit is set for CAS MF,
and the other is not, the one using CAS MF will detect a loss of sync.
SW2 Option
Off Disabled
On Enable
Switch SW3 & SW4: CRC-4 Multiframe/External Clock Mode
In framed mode, SW3 is used for CRC-4 MF. CRC-4 Multiframe
uses Time Slot zero to carry CRC-4 information. It operates independ-
ently of CAS MF. When CRC-4 is enabled, the unit monitors the incom-
ing data stream for CRC-4 errors. It transmits CRC-4 error counts to
the transmitting unit. Excessive errors may cause loss of frame or loss
of sync. If CRC-4 MF is used, both units must be set for set for CRC-4
MF. Otherwise, the one using CRC-4 MF will detect loss of sync.
In unframed mode, SW3 is used along with SW4 to determine
the clock mode. In unframed mode, the model 2715RC can be set to
Network, internal, or external clock mode.
In framed mode SW4 is used alone to determine the 2715RC
transmitter timing. In framed mode, the Model 2715RC can be set to
Network or Internal Clock Mode.
The following charts represent both cases.
CLOCK MODES
Network Clock Transmitter timing is derived from the received line
signal.
Internal Clock Transmitter clock is derived from an internal source
clock.
External Clock Transmitter timing is derived from the local DTE
device.
Note: When using the 2715RC as a high-speed short range modem,
one unit of the link must be configured in either internal or external
clock, and the other end must be configured for network clock mode.
Switches SW5, SW6, SW7, and SW8
Use Switches SW5, SW6, SW7, and SW8 to set the DTE data rate.
SW5 SW6 SW7 SW8 Speed
Off Off Off Off Clear Channel (2.048Mbps)1
On Off Off Off 64kbps
Off On Off Off 128kbps
On On Off Off 192kbps
Off Off On Off 256kbps
On Off On Off 384kbps
Off On On Off 512kbps
On On On Off 640kbps
Off Off Off On 768kbps
On Off Off On 1024kbps
Off On Off On 1280kbps
On On Off On 1536kbps
Off Off On On 1600kbps
On Off On On 1920kbps
Off On On On 1984kbps2
On On On On Invalid
87
UNFRAMED (G.703)
SW3 SW4 Clock Mode
Off Off Network (Default)
Off On Internal
On On External
On Off Network
MULTIFRAME(G.704)
SW3 CRC-4 MF SW4 Clock Mode
On On Off Network
Off Off On Internal

Switch SW2: CAS Multiframe
CAS multiframe uses Timeslot 16 (TS16) to send multiframe (MF)
alignment data. In CAS MF, a multiframe is defined as 16 frames,
where a frame consists of 32 64kb/s timeslots, numbered 0 to 31.
TS16 of the first frame in the MF contains the CAS MF alignment word
in the upper four bits. The alignment word is always 0000 (binary). The
2715RC does not perform any signaling in TS16 other than to insert
the MF alignment word, in order to maintain MF alignment. When CAS
MF is disabled, the unit transmits user data in TS16; therefore, up to 31
channels are available for user data. When it is enabled, TS16 is not
available to the user. In this case, the user can use up to 30 channels
for data. CAS MF can be used with CRC-4 MF or by itself. When en-
nabled, both units must employ CAS MF; if one unit is set for CAS MF,
and the other is not, the one using CAS MF will detect a loss of sync.
SW2 Option
Off Disabled
On Enable
Switch SW3 & SW4: CRC-4 Multiframe/External Clock Mode
In framed mode, SW3 is used for CRC-4 MF. CRC-4 Multiframe
uses Time Slot zero to carry CRC-4 information. It operates independ-
ently of CAS MF. When CRC-4 is enabled, the unit monitors the incom-
ing data stream for CRC-4 errors. It transmits CRC-4 error counts to
the transmitting unit. Excessive errors may cause loss of frame or loss
of sync. If CRC-4 MF is used, both units must be set for set for CRC-4
MF. Otherwise, the one using CRC-4 MF will detect loss of sync.
In unframed mode, SW3 is used along with SW4 to determine
the clock mode. In unframed mode, the model 2715RC can be set to
Network, internal, or external clock mode.
In framed mode SW4 is used alone to determine the 2715RC
transmitter timing. In framed mode, the Model 2715RC can be set to
Network or Internal Clock Mode.
The following charts represent both cases.
CLOCK MODES
Network Clock Transmitter timing is derived from the received line
signal.
Internal Clock Transmitter clock is derived from an internal source
clock.
External Clock Transmitter timing is derived from the local DTE
device.
Note: When using the 2715RC as a high-speed short range modem,
one unit of the link must be configured in either internal or external
clock, and the other end must be configured for network clock mode.
Switches SW5, SW6, SW7, and SW8
Use Switches SW5, SW6, SW7, and SW8 to set the DTE data rate.
SW5 SW6 SW7 SW8 Speed
Off Off Off Off Clear Channel (2.048Mbps)1
On Off Off Off 64kbps
Off On Off Off 128kbps
On On Off Off 192kbps
Off Off On Off 256kbps
On Off On Off 384kbps
Off On On Off 512kbps
On On On Off 640kbps
Off Off Off On 768kbps
On Off Off On 1024kbps
Off On Off On 1280kbps
On On Off On 1536kbps
Off Off On On 1600kbps
On Off On On 1920kbps
Off On On On 1984kbps2
On On On On Invalid
87
UNFRAMED (G.703)
SW3 SW4 Clock Mode
Off Off Network (Default)
Off On Internal
On On External
On Off Network
MULTIFRAME(G.704)
SW3 CRC-4 MF SW4 Clock Mode
On On Off Network
Off Off On Internal

1NOTE: When the data rate is set to 2.048Mb/s, then the unit is in
G.703 mode, and it transmits user data on all 32 timeslots. There
is no framing information; therefore, the CAS MF (SW2) is ignored
and SW3 defaulted to clock mode. In all other rate settings, the
unit employs G.704 framing; TS0 is reserved for signaling.
2NOTE: When not in clear channel and CAS multiframe is On
(SW2 = On), the setting for 1984 kbps is defaulted to 1920kbps.
3.2 CONFIGURING THE 1000RCM13448C REAR CARD
The Model 1000RCM13448C M/34/RJ48C Ohm rear card has two
configuration jumpers (JB3 and JB4) that may be used to connect
Signal Ground to Frame Ground on each interface (M/34 or RJ-48C).
Figure 4 (below) shows the locations of the jumpers on the 120 Ohm
rear card.
Figure 7 shows the strap location for the Model 1000RCM13448C
(M/34/RJ-48C) rear card.
FRGND & V.35 PIN A (FRGND) (JB3)
In the connected position, this strap links Frame Ground of the
2715RC and Pin A (Frame Ground) of the V.35 connector. In the open
position, signal ground is disconnected from frame ground.
JB3
Position 1&2 = FRGND and V.35 Pin A Connected (default)
Position 2&3 = FRGND and V.35 Pin A Not Connected
SGND & FRGND (JB4)
In the connected position, this strap links Signal Ground and frame
ground through a 100 ohm resistor. In the open position, signal ground
is disconnected from frame ground.
JB4
Position 1&2 = SGND and FRGND Connected (default)
Position 2&3 = SGND and FRGND Not Connected
910
Figure 5. Orientation of Interface Card Straps
connected open
Figure 7. 1000RCM13448C strap locations
JB4 JB3
123 123