Patton electronics 2707RC User manual

USER
MANUAL
MODEL 2707RC
NetLink-E1
TM
E1 CSU/DSU Rack Card
SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
Part# 07M2707RC
Rev. C
Revised 11/11/11
An ISO-9001
Certified
Company

2
1.0 Warranty Information ................................................................. 4
1.1 Warranty Statement...................................................................... 4
1.2 Service Information....................................................................... 5
2.0 General Information.................................................................... 6
2.1 Features........................................................................................ 6
2.2 General Product Description......................................................... 6
3.0 Configuration .............................................................................. 7
3.1 DIP Switch Configuration.............................................................. 7
Switch S1-1 through S1-8............................................................. 8
Switch S1-1: Line Coding............................................................. 8
Switch S1-3: Line Build-out Impedance........................................ 9
S1-6 and S1-7 Clock Modes......................................................... 9
Switch S1-8: Loopback tests...................................................... 10
Switch S3: DIP switch or NMS (network management system) con-
trol............................................................................................... 10
Hardware Reset .................................................................. 10
NMS Control. ....................................................................... 10
Setting the card address. .................................................... 11
3.2 DCE/DTE selector (X.21 version only) ....................................... 12
3.3 Configuring The Rear Interface Card.......................................... 12
Model 1001RCM12548C Strap Settings .................................... 14
DTE Shield (DB-25 Pin 1) & FRGND (JB3) ......................... 15
SGND & FRGND (JB4) ....................................................... 15
Model 1001RCM13448C Strap Settings .................................... 16
DTE Shield (M/34 Pin A) & FRGND (JB3). ......................... 17
SGND & FRGND (JB4). ...................................................... 17
Model 1001RCM11548C Strap Settings .................................... 17
DTE Shield (DB-15 Pin 1) & FRGND (JB3) ......................... 18
SGND & FRGND (JB4) ....................................................... 19
Model 1001RCM11575 Strap Settings....................................... 19
4.0 Installation................................................................................. 21
4.1 The Model 1001R14 Rack Chassis............................................ 21
The Rack Power Supply............................................................. 21
Powering up Your 1001R14 Rack.............................................. 22
4.2 Installing The Model 2707RC Into The Chassis ......................... 22
4.3 Connecting to a DTE Device ...................................................... 22
4.4 Connecting to a DCE Device...................................................... 22
4.5 Connecting the E1 Interface ....................................................... 23
4.6 Connecting Dual Coax BNC (75 Ohm)....................................... 23
5.0 Operation................................................................................... 24
5.1 LED Descriptions........................................................................ 24
5.2 LOCAL LOOP DIAGNOSTICS ................................................... 25
Operating local loopback (LLB).................................................. 25
A
Specifications ........................................................................... 26

3
B
Cable Recommendations......................................................... 27
C
Factory Replacement Parts And Accessories ....................... 28
D
E1 Interface Pin Assignment ................................................... 29
E
V.35 Interface Pin Assignment ................................................ 30
F
EIA-530 Interface Pin Assignment .......................................... 31
G
X.21 Interface Pin Assignment ................................................ 32

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1.0 WARRANTY INFORMATION
Thank you for your purchase of this Patton Electronics product. This
product has been thoroughly inspected and tested and is warranted for
One Year parts and labor. If any questions or problems arise during
installation or use of this product, please do not hesitate to contact Pat-
ton Electronics Technical Services at [phone].
1.1 WARRANTY STATEMENT
Patton Electronics warrants all Model 2707RC Series components to
be free from defects, and will—at our option—repair or replace the prod-
uct should it fail within one year from the first date of shipment. This war-
ranty is limited to defects in workmanship or materials, and does not
cover customer damage, abuse, or unauthorized modification. This prod-
uct contains no serviceable parts; therefore the user shall not attempt to
modify the unit in any way. If this product fails or does not perform as
warranted, your sole recourse shall be repair or replacement as
described above. Under no condition shall Patton Electronics be liable
for any damages incurred by the use of this product. These damages
include, but are not limited to, the following: lost profits, lost savings and
incidental or consequential damages arising from the use of or inability to
use this product. Patton Electronics specifically disclaims all other war-
ranties, expressed or implied, and the installation or use of this product
shall be deemed an acceptance of these terms by the user. In the event
the user detects intermittent or continuous product malfunction due to
nearby high power transmitting radio frequency equipment, the user is
strongly advised to use only data cables with an external outer shield
bonded to a metal or metallized connector.

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1.2 SERVICE INFORMATION
All warranty and non-warranty repairs must be returned freight prepaid
and insured to Patton Electronics. All returns must have a Return Materi-
als Authorization number on the outside of the shipping container. This
number may be obtained from Patton Electronics Technical Support at:
tel: [phone]
email: [e-mail]
www: http://www.patton.com
Note Packages received without an RMA number will not be
accepted.
Patton Electronics' technical staff is also available to answer any ques-
tions that might arise concerning the installation or use of your Patton
Model 2707RC. Technical Services hours: 8AM to 5PM EST, Monday
through Friday.

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2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product. This prod-
uct has been thoroughly inspected and tested and is warranted for One
Year parts and labor. If any questions arise during installation or use of the
unit, contact Patton Electronics Technical Services at [phone].
2.1 FEATURES
• Terminates E1/G.703 circuits over a 4-wire RJ-48C interface
• Connects to standard CPE serial and 10Base-T interfaces
• Unstructured rate of 2.048 Mbps (G.703)
• Selectable AMI or HDB3 line coding
• Configuration via internal DIP switches or SNMP management of local
unit through the 1001MC
• Six easy-to-read LED indicators monitor data and diagnostics
• Internal, external, network clocking
• also operates as a high-speed point-to-point modem
• Fits into Patton’s 2U rack-mount chassis
• Made in USA
• Conforms to ONP requirement CTR12 for connection to international
telecom networks
2.2 GENERAL PRODUCT DESCRIPTION
The Model 2707RC Series are single port E1 CSU/DSUs that provide
high-speed WAN connectivity in a rack card package. Connecting to the
serial WAN port of a switch, router or multiplexer, the NetLink-E1™ pro-
vides E1 access connection at data rates of 2.048 Mbps. The NetLink-
E1™ is an excellent choice when terminating leased line services, Frame
Relay backbones, internet access as well as LAN-to-LAN services.
The Netlink-E1™ provides digital access to local WAN services between
two facilities over a dedicated 4-Wire circuit. Clock modes, line imped-
ance, and coding options are programmed via internally accessible DIP
switches or SNMP manageable through the 1001MC. The Netlink-E1™
uses AMI and HDB3 line coding. Netlink-E1™ also supports a full range
of system and diagnostic features that make system setup easy.
The NetLink-E1 provides E1 terminations over a modular RJ-48C jack or
dual 75 Ohm BNC connectors when using the 1001RCM11575 (X.21)
rear card.

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3.0 CONFIGURATION
The 2707RC features configuration capability via hardware DIP switches
or SNMP through Patton’s Model 1001MC Management Card. This sec-
tion describes all possible hardware and software switch configurations
of the network connection.
Note The 2707RC factory default is set to DIP switch control. Soft-
ware control can be enabled by setting S3 to a valid address
SNMP management station. Performing a hardware reset sets
the unit for dip switch control.
3.1 DIP SWITCH CONFIGURATION
The Model 2707RC has two eight bit DIP switches that allow configura-
tion for a wide range of applications. The switches are accessed by
removing the card from the chassis.Figure 1 shows the location of the
DIP switches on the top of the printed circuit board.
Figure 1. Model 2707RC Series top view, showing location of DIP switches.
DIP Switches S1 and S3 can be configured as either “On” or “Off”.
Figure 2 shows the orientation of the DIP switches with respect to ON/
OFF positions. Default position and descriptions for Switches S1 and S3
are provided on the next page.
S3 S1
12345678
ON
12345678
ON

8
Figure 2. Close up of DIP switches showing ON/OFF positions.
Note If you do not have a terminal, you may force the unit to use the
DIP switches as the default configuration source by turning off
the unit, setting all the DIP switches to the ON position, then
powering on the unit. This will cause the unit to enter a special
mode. Then turn off the unit and change the switch settings to
the desired settings. When you turn the unit on again, the unit
will be set up with the selected switch settings.
Switch S1-1 through S1-8
A detailed description of each switch (S1-1 through S1-8) setting follows
the summary table below.
Switch S1-1: Line Coding
Use switch S1-1 to control the network line coding. Set these options to
be the same as the line coding given to you by your service provider. If
Table 1: Switch Set 1 Summary
Position Function Factory Default Selected
Option
S1-1 Line Coding OFF HDB3
S1-2 Reserved OFF
S1-3 Line Build Out OFF 120 ohm
S1-4 Reserved OFF
S1-5 Reserved OFF
S1-6 Clocking Mode OFF Network
S1-7 Clocking Mode OFF Network
S1-8 TM from DTE OFF Enabled

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you are using two Model 2707s together as short-range modems, set
both units to HDB3.
Switch S1-3: Line Build-out Impedance
Switch S1-3 is used to select line build-out (LBO) impedance for the Model
2707’s E1 port. Your Model 2707RC comes equipped with either an RJ-48C
connector, dual BNC connectors, or both. When connecting to the E1 net-
work, the LBO selection must match the connector type. If the dual BNC con-
nectors are used, the line build-out impedance must be set to 75-ohm.
Otherwise, for the RJ-48C connector, impedance should be set to 120 ohm.
S1-6 and S1-7 Clock Modes
Set switch S1-6 and S1-7 to determine the 2707RC’s transmitter timing.
Table 2: S1-1 Line Coding settings
S1-1 Line Coding
Off HDB3
On AMI
Table 3: S1-3 Line Build-out settings
S1-3 Setting
75 ohm On
120 ohm Off
Table 4: S1-6 and S1-7 Clock Modes
S1-6 S1-7 Clock Mode
On On Network (Received Recovered)
On Off Internal
Off On External
Off Off Network (Received Recovered)
Network Clock Transmitter timing is derived using the received
line signal (received recovered) from the network.
Internal Clock Transmitter timing is derived from an internal clock
source.
External Clock Transmitter timing is derived from DTE terminal
timing. (Units equipped with 10Base-T modules do
not operate in external clock mode. They enter
internal clock mode when this setting is selected.)

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Switch S1-8: Loopback tests
Use switch S1-8 to allow the Model 2707RC to enter loopbact test mode
when the DTE raises the appropriate loop request pin.
Switch S3: DIP switch or NMS (network management system) control
The Model 2707RC can be configured and managed via DIP switches, or
NMS-SNMP/HTTP through a Patton Model 1001MC management card
acting as a proxy agent. (refer to the 1001MC user manual when using
this mode). Switch S3 selects control and management mode for the
Model 2707RC.
Hardware Reset . The Model 2707RC isset at the factory for DIP switch
control. If the user has changed control to NMS, and then needs to revert
to DIP switch control, use the following procedure:
1. Pull the Model 2707RC out of the rack.
2. Set all switches (S1 and S3) to the ON position.
3. Install the card into the rack and power up the unit.
4. Pull the card out again and change the switches to the desired set-
tings. The unit is now under DIP switch control.
5. Install the card back into the rack.
NMS Control. When switches S3-1 to S3-8 are set to a setting other
than the ones shown in Table 6, the Model 2707RC enters NMS control.
While under NMS control, each of the Model 2707RC cards housed in a
rack must have an address. Table 7 and Figure 3 show examples of
address settings. The table follows the hexadecimal system, where
switch SW3-1 is the least significant bit (LSB), and SW3-8 is the most
Table 5: S1-8 Loopback test settings
S1-8 Setting
Off DTE loopback request enabled
On DTE loopback request disabled
Table 6: S3 DIP switch settings
S3-1 to S3-8 Management selection
All set to Off DIP switch control (factory default)
All set to On Hardware reset

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significant bit (MSB). A switch in the On position represents binary zero,
and Off represents binary one (see Figure 3).
Figure 3. Sample DIP switch settings
Setting the card address. Table 7 and Figure 3 show examples of how
to set a card address using switches S3-1 through S3-8. The addresses
are listed in their hexadecimal (hex) and corresponding decimal values.
Table 7: Examples of the address settings
Hex Address
(Decimal Address) S3-8 S3-7 S3-6 S3-5 S3-4 S3-3 S3-2 S3-1
0x01(1) ONONONONONONONOFF
0x02(2) ONONONONONONOFFON
0x10(16) ON ON ON OFF ON ON ON ON
0xB5(181) OFF ON OFF OFF ON OFF ON OFF
12345678
ON
Off = binary 1
On = binary 0
0x01 (1)
0x02 (2)
0x10 (16)
0xB5 (181)
12345678
ON
12345678
ON
12345678
ON
Most significant bit (LSB)
Least significant bit (MSB
)
1
2
16
181
Hexadecimal
Address
Decimal
Address

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Figure 4. DCE/DTE selector strap location
3.2 DCE/DTE SELECTOR (X.21 VERSION ONLY)
The X.21 version of the 2707RC can be set up as a DCE (default) or
DTE device by using a DCE/DTE selector strap (see Figure 4). The infor-
mation in Table 8 describes configuring the DCE/DTE strap.
3.3 CONFIGURING THE REAR INTERFACE CARD
The Model 2707RC Series has five interface card options: the Model
1001RCM12548C (DB-25/RJ-48C), the Model 1001RCM13448C (M/34/
RJ-48C), the Model 1001RCM11548C (DB-15/RJ-48C), the Model
1001RCM11575 (DB-15/Dual BNC), and the model IM2RC/IA (RJ-48C/
Table 8: DCE/DTE selector settings
Setting Description
DCE To set a rack card as a DCE device, install the DCE/
DTE selector with the DCE arrows pointing toward the
front panel.
DTE To set a rack card as a DTE device, install the DCE/DTE
selector with the DTE arrows pointing toward the front
panel.
Link
TM
TXD
RXD
Model 2707RC
In this example, the DCE/DTE
strap is configured for DTE
because the DTE label on the
strap is pointed toward the
front panel
12345678
ON
12345678
ON

13
RJ-45). Each of these options supports one DTE interface connection
and one 4-wire RJ-48C or dual-BNC line connection. Figure 5 illustrates
the five different interface options for the Model 2707RC Series.
Figure 5. Model 2707RC Series interface card options.
Note The 2707RC Series rear cards are specifically designed to oper-
ate with the E1 function card and must not be swapped with
other Patton function cards.
Prior to installation, you will need to examine the rear card you have
selected and make sure it is properly configured for your application.
Each rear card is configured by setting straps located on the PC board.
To configure the rear cards, you must set the configuration straps.
Figure 6 shows the orientation of these straps. Each strap can either be
on pins 1 and 2, or on pins 2 and 3.
Figure 6. Orientation of Interface Card Straps
Sections “Model 1001RCM12548C Strap Settings”,“Model
1001RCM13448C Strap Settings”, and “Model 1001RCM11548C Strap
Model
IM2RC/IA
RJ-48C
Model
1001RCM13448C
RJ-48C
M/34 F
Model
1001RCM12548C
RJ-48C
DB-25 F
Model
1001RCM11548C
RJ-48C
DB-15 F
Model
1001RCM11575
Dual BNC
DB-15 F

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Settings” describe the strap locations and possible settings for each rear
card.
Model 1001RCM12548C Strap Settings
Figure 7 shows strap locations for the Model 1001RCM12548C (DB-25)
rear cards. These straps determine various grounding characteristics for
the terminal interface and twisted pair lines. JB3 and JB4 are user con-
figurable.
Figure 7. 1001RCM125XX strap locations.
Table 9 provides an overview of interface strap functions for the rear
interface cards. Following the table overview are detailed descriptions of
each strap’s function.
Table 9: Interface Card Strap Summary
Strap Function Position 1&2 Position 2&3
JB3 DTE Shield (Pin1) & FRGND Connected* Open
JB4 FRGND & SGND Connected* Open
* Indicates default setting
13
JB3
123
JB4

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DTE Shield (DB-25 Pin 1) & FRGND (JB3). In the connected position,
this strap links DB-25 pin 1 & frame ground. In the open position, pin 1 is
disconnected from frame ground (see Table 10)
SGND & FRGND (JB4). In theconnected position, this strap links DB-25
pin 7 (Signal Ground) and frame ground through a 100 ohm resistor. In
the open position, pin 7 is connected directly to frame ground (see
Table 11)
Table 10: JB3 strap settings
Position Description
1 & 2 SGND (Pin 7) and FRGND Connected through a 100 ohm resistor
2 & 3 DTE Shield (Pin 1) and FRGND Not Connected
Table 11: JB4 strap settings
Position Description
1 & 2 SGND (Pin 7) and FRGND Connected through a 100 ohm resistor
2 & 3 SGND (Pin 7) and FRGND Directly Connected

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Model 1001RCM13448C Strap Settings
Figure 8 shows the strap location for the Model 1001RCM13448C (M/34)
rear card. This strap determines whether Signal Ground and Frame
Ground will be connected.
Figure 8. 1001RCM13448C strap locations.
Table 12 provides an overview of interface strap functions for the rear
interface cards. Following the table overview are detailed descriptions of
each strap’s function.
Table 12: Interface Card Strap Summary
Strap Function Position 1&2 Position 2&3
JB3 DTE Shield (Pin A) & FRGND Connected* Open
JB4 FRGND & SGND (Pin B) Connected* Open
* Indicates default setting
13
JB3
123
JB4

17
DTE Shield (M/34 Pin A) & FRGND (JB3). In the connected position,
this strap links M/34 pin A & frame ground. In the open position, pin A is
disconnected from frame ground (see Table 13).
SGND & FRGND (JB4). In the connected position, this strap links Signal
Ground and frame ground through a 100 ohm resistor. In the open posi-
tion, signal ground is disconnected from frame ground (see Table 14).
Model 1001RCM11548C Strap Settings
Figure 9 on page 18 shows strap locations for the Model
1001RCM11548C (DB-15) rear cards. These straps determine various
grounding characteristics for the terminal interface and twisted pair lines.
JB3 and JB4 are user configurable.
Table 13: JB3 strap settings
Position Description
1 & 2 DTE Shield (Pin A) and FRGND Connection
2 & 3 DTE Shield (Pin A) and FRGND Not Connected
Table 14: JB4 strap settings
Position Description
1 & 2 SGND and FRGND Connected
2 & 3 SGND and FRGND Not Connected

18
Figure 9. 1001RCM11548C strap locations.
Table 15 provides an overview of interface strap functions for the rear
interface cards. Following the table overview are detailed descriptions of
each strap’s function.
DTE Shield (DB-15 Pin 1) & FRGND (JB3). In the connected position,
this strap links DB-15 pin 1 & frame ground. In the open position, pin 1 is
disconnected from frame ground (see Table 16).
Table 15: Interface Card Strap Summary
Strap Function Position 1&2 Position 2&3
JB3 DTE Shield (Pin1) & FRGND Connected* Open
JB4 FRGND & SGND (Pin 8) Connected* Open
* Indicates default setting
Table 16: JB3 strap settings
Position Description
1 & 2 DTE Shield (Pin 1) and FRGND Connected
2 & 3 DTE Shield (Pin 1) and FRGND Not Connected
13
JB3
123
JB4

19
SGND & FRGND (JB4). In theconnected position, this strap links DB-15
pin 8 (Signal Ground) and frame ground through a 100 ohm resistor. In
the open position, pin 8 is connected directly to frame ground
(see Table 17).
Model 1001RCM11575 Strap Settings
Figure 10 shows strap locations for the Model 1001RCM11575 (DB-15/
Dual BNC) rear cards. Figure 8 shows strap locations for the Model
1001RCM11548C (DB-15) rear cards. These straps determine various
grounding characteristics for the terminal interface and twisted pair lines.
JB3 and JB4 are user configurable.
Figure 10. 1001RCM11575 strap locations.
Table 17: JB4 strap settings
Position Description
1 & 2 SGND (Pin 8) and FRGND Connected through a 100 ohm resistor
2 & 3 SGND (Pin 8) and FRGND Directly Connected
JB3
1
3
JB4
1
3

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.
Table 18: Interface Card Strap Summary
Strap Function Position 1&2 Position 2&3
JB3 DTE Shield (Pin1) & FRGND Connected* Open
JB4 FRGND & SGND (Pin 8) Connected* Open
* Indicates default setting