Patton electronics 2701RC User manual

USER
MANUAL
MODEL 2701RC Series
NetLink-E1
TM
E1/Fractional E1
CSU/DSU Rack Card
SALES OFFICE
[phone]
TECHNICAL SUPPORT
[phone]
Part#: 07M2701RC
Rev. H
Revised 11/11/11
An ISO-9001
Certified
Company

2
CONTENTS
1.0 Warranty Information ................................................................. 5
1.1 Warranty Statement...................................................................... 5
1.2 Compliance................................................................................... 6
EMC Compliance:......................................................................... 6
Safety Compliance: ...................................................................... 6
PSTN Regulatory:......................................................................... 6
1.3 Service.......................................................................................... 6
2.0 General Information.................................................................... 7
2.1 Features........................................................................................ 7
2.2 General Product Description......................................................... 7
3.0 Configuration .............................................................................. 9
3.1 DIP switch configuration............................................................... 9
3.2 Switches S1-1 through S1-8....................................................... 10
Switch S1-1 Line Coding............................................................ 10
HDB3 ................................................................................... 10
AMI. ..................................................................................... 11
S1-2 and S1-3 Clock Modes....................................................... 11
Network Clock ..................................................................... 11
Internal Clock ...................................................................... 11
External Clock ..................................................................... 11
Switch S1-4 through S1-8: DTE data rate.................................. 11
3.3 Switches S2-1 through S2-8....................................................... 13
Switch S2-1: CAS Multiframe..................................................... 13
Switch S2-2: CRC-4 Multiframe.................................................. 13
Switch S2-3: Remote Digital Loopback Type............................. 14
Switch S2-4: RDL Response...................................................... 14
Switch S2-5: Test mode request from DTE................................ 14
Switch S2-6: Front Panel Switches............................................ 15
Switch S2-7: VT-100 or NMS Selection...................................... 15
Switch S2-8: Impedance............................................................. 15
3.4 Switches S3-1 through S3-8....................................................... 15
Switch S3: DIP switch or NMS (network management system)/VT-
100 control.................................................................................. 15
Hardware reset. ................................................................... 16
NMS/VT-100 Control. .......................................................... 16
Setting the card address. .................................................... 17
3.5 DCE/DTE selector (X.21 version only) ....................................... 18
3.6 Configuring the rear interface card ............................................. 18
Model 1001RCM12548C Strap Settings .................................... 20
DTE Shield (DB-25 Pin 1) & FRGND (JB3) ......................... 21
SGND & FRGND (JB4) ....................................................... 21
Model 1001RCM13448C Strap Settings .................................... 22
DTE Shield (M/34 Pin A) & FRGND (JB3). ......................... 23
SGND & FRGND (JB4). ...................................................... 23
Model 1001RCM11548C Strap Settings .................................... 23

3
DTE Shield (DB-15 Pin 1) & FRGND (JB3) ......................... 24
SGND & FRGND (JB4) ....................................................... 25
Model 1001RCM11575 Strap Settings....................................... 25
3.7 VT-100 software Configuration................................................... 26
Accessing the Menu System...................................................... 26
Introduction to Main Menu.......................................................... 29
System Configuration................................................................. 30
System Diagnostics.................................................................... 35
NI status ..................................................................................... 38
Receiver Carrier Loss [RCL]. .............................................. 38
Current DIP Switch Settings ................................................ 39
Unit Options................................................................................ 39
4.0 Installation................................................................................. 42
The Model 1001R14 Rack Chassis............................................ 42
The Rack Power Supply............................................................. 43
Powering up your 1001R14 rack................................................ 44
Grounding the Model 1001RP Series......................................... 45
Mise a terre le Model 1001RP Series......................................... 46
So erden Sie das Model 1001RP Series.................................... 47
Conección a tierra del Model 1001RP Series............................. 48
4.1 Installing the Model 2701RC into the chassis............................. 49
4.2 Connecting to a DTE device....................................................... 49
4.3 Connecting to a DCE device....................................................... 49
4.4 Connecting the E1 interface ...................................................... 50
4.5 Connecting dual-coax BNC (75 ohm)......................................... 51
5.0 Operation................................................................................... 52
5.1 LED descriptions......................................................................... 52
5.2 Loop (V.54 & Telco) Diagnostics ................................................ 53
Operating Local Loopback (LL).................................................. 54
Operating Remote Digital Loopback (RL)................................... 55
CSU Loop................................................................................... 56
5.3 Bit error rate (V.52) diagnostics.................................................. 56
A
Specifications ........................................................................... 58
A.1 Network Data Rate ...................................................................... 58
A.2 Network Connector ..................................................................... 58
A.3 Nominal Impedance ................................................................... 58
A.4 DTE Interface .............................................................................. 58
A.5 Line Coding ................................................................................ 58
A.6 Line Framing ............................................................................... 58
A.7 CAS Multiframing ........................................................................ 58
A.8 CRC-4 Multiframing .................................................................... 58
A.9 Clocking ...................................................................................... 58
A.10 DTE Data Rates .......................................................................... 58
A.11 Time Slot Rate ............................................................................. 59
A.12 DS0 Start Position ....................................................................... 59

4
A.13 DS0 Mapping Position ................................................................ 59
A.14 Diagnostics ................................................................................. 59
A.15 Indicators .................................................................................... 59
A.16 Configuration .............................................................................. 59
A.17 Power Supply .............................................................................. 59
A.18 Humidity ...................................................................................... 59
A.19 Temperature ............................................................................... 59
A.20 Dimensions ................................................................................. 59
B
Cable Recommendations......................................................... 60
C
Factory replacement parts and accessories.......................... 61
D
E1 Interface Pin Assignment ................................................... 62
E
V.35 interface pin assignment................................................. 63
F
EIA-530 interface pin assignment ........................................... 64
G
X.21 interface pin assignment................................................. 65

5
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 2701RC 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 metalized connector.

6
1.2 COMPLIANCE
EMC Compliance:
• EN55022, Class A
• EN55024
Safety Compliance:
• IEC/EN 60950-1
• AS/NZS 60950-1
PSTN Regulatory:
• TBR 12 & 13
• AS/ACIF S016
1.3 SERVICE
All warranty and nonwarranty 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 Services at:
•Tel:[phone]
•Email:[e-mail]
• URL: http://www.patton.com
Note Packages received without an RMA number will not be
accepted.

7
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/FE1 circuits over a 4-wire RJ-48C interface
• Connects to standard CPE serial and 10Base-T interfaces
• Common framed nx64 rates up to1984 kbps (G.704)
• Unstructured rate of 2.048 Mbps (G.703)
• G.703 or G.704 framing (with or without CRC-4, CAS multiframe)
• Selectable AMI or HDB3 line coding
• Configuration via internal DIP switches, software control port, or
SNMP management of local unit through the 1001MC
• Nine easy-to-read LED indicators monitor data & 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 requirements CTR12 and CTR13 for connection to
international telecom networks
2.2 GENERAL PRODUCT DESCRIPTION
The Model 2701RC Series are single port E1/FE1 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™ provides
E1 or FE1 access connection at data rates of 2.048 Mbps and nx64. 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. WAN bandwidth, framing and
coding options are programmed via internally accessible DIP switches, via
a VT-100 type terminal using a Model 1001CC control card, or SNMP man-

8
agable through the 1001MC. With a 1001CC card, a terminal can manage
addressable 2701RC cards using menu driven controls. 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 Model 1001RCM11575
(X.21 interface with dual BNC connectors). Power options include a single
AC or DC or redundant AC/DC.

9
3.0 CONFIGURATION
The 2701RC features configuration capability via hardware DIP switches,
a software control port, or SNMP through the 1001MC. This section
describes all possible hardware and software switch configurations of the
network connection.
Note The 2701RC factory default is set to DIP switch control. Soft-
ware control can be enabled either through the control port or
SNMP management station. Performing a hardware reset sets
the unit for dip switch control.
3.1 DIP SWITCH CONFIGURATION
The Model 2701RC has three 8-bit DIP switches that allow configuration 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 2701RC Series top view showing location of DIP switches
DIP Switches S1, S2, 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, S2, and S3
are provided on the following pages.
Figure 2. Close-up of DIP switches showing ON/OFF positions

10
Note Hardware reset allows users to put the 201RC under switch
control. You may force the unit to use the DIP switches as the
default configuration source by turning off the unit, setting all the
S3 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 off position. When you
turn the unit on again, the unit will be set up with the selected
switch settings.
3.2 SWITCHES S1-1 THROUGH S1-8
A detailed description of each switch (S1-1 through S1-8) setting follows
Table 1.
Switch S1-1 Line Coding
Use switch S1-1 to control the network line coding options. Set these
options to be the same as the line coding given to you by your service pro-
vider. If you are using two Model 2701RCs together as short range
modems, set both units to HDB3.
HDB3. In this line coding, the transmitter substitutes a deliberate 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
requirements. unless AMI is required in your application, HDB3 should
be used whenever possible.
Table 1: Switch set 1 summary table
Position Function Factory
Default
Selected
Option
S1-1 Line code OFF HDB3
S1-2 Clocking Mode ON Internal
S1-3 Clocking Mode OFF Internal
S1-4 Data Rate OFF
S1-5 Data Rate OFF 2.048 Mbps
S1-6 Data Rate OFF Clear Channel
S1-7 Data Rate OFF
S1-8 Data Rate OFF
S1-1 Line Encoding
OFF HDB3
ON AMI

11
AMI. Alternate Mark Inversion defines a pulse as a “mark,” a binary one,
as opposed to a zero. In an E1 network connection, signals are transmit-
ted as a sequence of ones and zeros. Ones are sent as pulses, and
zeros are sent as spaces, i.e., no pulse. Every other pulse is inverted
from the previous pulse in polarity, so that the signal can be effectively
transmitted. This means, however, that a long sequence of zeros in the
data stream will cause problems, since the NTU receiving 2.048 Mbps
clock. If you must use AMI, you should ensure that the data terminal
equipment connected to the unit provides a minimally acceptable pulse
density. For this reason, there are advantages to using HDB3 instead.
S1-2 and S1-3 Clock Modes
Set switch S1-2 and S1-3 to determine the 2701RC’s transmitter timing.
Network Clock. Transmitter timing is derived using the received line sig-
nal (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.
Switch S1-4 through S1-8: DTE data rate
Use switches S1-4 through S1-8 to set the DTE data rate (see Table 2 on
page 12.
S1-2 S1-3 Clock mode
On On Network (Recieved Recovered)
On Off Internal
Off On External
Off Off Network (Recieved Recovered)

12
Note When the data rate is set to 2.048 Mbps, the unit is forced into
G.703 mode, and it transmits user data on all 32 time-lots. There
is no framing information; therefore, the CRC4 MF (SW2-2)
switch is ignored. In all other rate settings, the unit employs
G.704 framing; TS0 is reserved for signaling.
Table 2: DTE data rate settings
SW-4 SW-5 SW-6 SW-7 SW-8 Speed
On On On On On 64 kbps
Off On On On On 128 kbps
On Off On On On 192 kbps
Off Off On On On 256 kbps
On On Off On On 320 kbps
Off On Off On On 384 kbps
On Off Off On On 448 kbps
Off Off Off On On 512 kbps
On On On Off On 576 kbps
Off On On Off On 640 kbps
On Off On Off On 704 kbps
Off Off On Off On 768 kbps
On On Off Off On 832 kbps
Off On Off Off On 896 kbps
On Off Off Off On 960 kbps
Off Off Off Off On 1024 kbps
On On On On Off 1088 kbps
Off On On On Off 1152 kbps
On Off On On Off 1216 kbps
Off Off On On Off 1280 kbps
On On Off On Off 1344 kbps
Off On Off On Off 1408 kbps
On Off Off On Off 1472 kbps
Off Off Off On Off 1536 kbps
On On On Off Off 1600 kbps
Off On On Off Off 1664 kbps
On Off On Off Off 1728 kbps
Off Off On Off Off 1792 kbps
On On Off Off Off 1856 kbps
Off On Off Off Off 1920 kbps
On Off Off Off Off 1984 kbps
Off Off Off Off Off Clear Channel 2048 kbps

13
3.3 SWITCHES S2-1 THROUGH S2-8
Switch S2-1: CAS Multiframe
CAS multiframe uses Timeslot 16 (TS16) to send multiframe (MF) align-
ment data. In CAS MF, a MF is defined as 16 frames, where a frame con-
sists of 32 64-kbps 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 2701RC does not perform
any signaling in TS16 other than to insert the MF alignment word, in
order to maintain MF alignment. When CAS MF disabled, the unit trans-
mits 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 enabled, 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.
Switch S2-2: CRC-4 Multiframe
In framed mode, S2-2 is used for CRC-4 MF. When CRC-4 is enabled,
the unit monitors the incoming data stream for CRC-4 errors. It transmits
CRC-4 error counts to the transmitting unit.. When using timeslot zero
(TS0), 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.
Table 3: Switch set 2 summary table
Position Function Factory Default Selected Option
S2-1 CAS MF Off Disabled
S2-2 CRC-4 multiframe Off Disabled
S2-3 RDL Type Off V.54
S2-4 RDL Response On Disabled
S2-5 TM from DTE On Disabled
S2-6 Front Panel Switch Off Enabled
S2-7 NMS/VT-100
Switch Off NMS
S2-8 Line build out Off 120 ohms
S2-2 Option
Off CRC-4 Disabled
On CRC-4 Enabled

14
Switch S2-3: Remote Digital Loopback Type
The user can set this switch to select the type of remote loop that will be
initiated by the Model 2701. If set to V.54, the Model 2701 will initiate a
V.54 loop when Remote Loop is selected by the front panel switches. If
set to CSU, the Model 2701 will initiate a CSU loop when Remote Loop
is selected by the front panel switches.
Switch S2-4: RDL Response
V.54 and CSU Loopbacks are special in-band loopback facility that
sends a pseudo-random pattern over the data stream. This is useful for
campus applications when you need to put a remote unit in loopback.
The unit responds to the V.54 loopback command, and the whole pro-
cess takes only a few seconds to complete. When V.54 Loopback is dis-
abled, the unit will not be able to send or respond to V.54 or CSU
loopback commands. The duration of the loopback is limited by the loop-
back timeout setting.
Switch S2-5: Test mode request from DTE
Use Switch S2-5 to allow Model 2701RC to enter loopback tests when
the DTE raises the appropriate loop request pin.
S2-3 RDL Type
Off Initiate a V.54 RDL loop when selected
On Initiate a CSU loopback when selected
S2-4 Option
Off RDL Response Enabled
On RDL Response Disabled
S2-5 Setting
Off Response to DTE Loopback Request Enabled
On Response to DTE Loopback Request Disabled

15
Switch S2-6: Front Panel Switches
As the front panel switches may be inadvertently toggled, or in the event
that the end-user may not need to use the switches, the installer may dis-
able the front panel switches. Set switch S2-6 to determine whether the
front-panel toggle switches are enabled or disabled.
Switch S2-7: VT-100 or NMS Selection
Switch S2-7 selects the configuration mode that the G.703 Access Rack
Card uses. When VT-100 is selected, configuration and status can be
setup through a VT-100 terminal using a 1001CC. When NMS (network
management station) is selected, configuration and status can be setup
and maintained through SNMP using a 1001MC. Please refer to the
1001MC user manual when using this mode.
Note DIP switch configuration can be used regardless of the setting
of this switch. The DIP switches are enabled through the VT-100
screens, NMS, or by performing a hardware reset.
Switch S2-8: Impedance
Switch S2-8 is used to select the line build out for the Model 2701RC.
When using the 1001RCM11575 (dual BNC) rear card, set S2-8 to ON.
When using a 120 ohm cable with RJ-45 connectors, set S2-8 to OFF.
3.4 SWITCHES S3-1 THROUGH S3-8
Switch S3: DIP switch or NMS (network management system)/VT-100
control
The Model 2701RC can be configured and managed via DIP switches or
NMS/VT-100 through a Patton Model 1001MC card or 1001CC card,
respectively (refer to the 1001MC or 1001CC user manuals when using
S2-6 Option
Off Front Panel Switches Enabled
On Front Panel Switches Disabled
S2-7 Management Selection
Off NMS control
On VT-100 control
S2-8 Setting
75 ohm On
120 ohm Off

16
this mode). Switch S3 selects control and management mode for the
Model 2701RC.
Hardware reset. The Model 2701RC is set at the factory for DIP switch
control. If the user has changed control to NMS/VT-100, and then needs
to revert to DIP switch control, use the following procedure:
1. Pull the Model 2701RC out of the rack. Make a note of the DIP S1,
S2, and S3 settings.
2. Set S3 switches 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/VT-100 Control. When switches S3-1 to S3-8 are set to a setting
other than the ones shown in Table 4, the Model 2701RC enters NMS/
VT-100 control. While under NMS/VT-100 control, each of the Model
2701RC cards housed in a rack must have an address. Table 5 and
Figure 3 show examples of address settings. The table follows the hexa-
decimal system, where switch S3-1 is the least significant bit (LSB), and
S3-8 is the most significant bit (MSB). A switch in the On position repre-
sents binary zero, and Off represents binary one (see Figure 3).
Table 4: DIP switch S3 settings
S3-1 to S3-8 Management selection
All Off DIP switch control (factory default)
All On Hardware reset
Table 5: 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) ON ON ON ON ON ON ON OFF
0x02 (2) ON ON ON ON ON ON OFF ON
0x10(16) ON ON ON OFF ON ON ON ON
0xB5(181) OFF ON OFF OFF ON OFF ON OFF

17
Figure 3. Sample DIP switch settings
Setting the card address. Table 5 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.

18
Figure 4. DCE/DTE selector strap location
3.5 DCE/DTE SELECTOR (X.21 VERSION ONLY)
The X.21 version of the 2701RC 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 6 describes configuring the DCE/DTE strap.
3.6 CONFIGURING THE REAR INTERFACE CARD
The Model 2701RC 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-48C (RJ-
Table 6: 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.

19
45/10Base-T RJ-48C). Each of these options supports one DTE inter-
face connection and one 4-wire line connection. Figure 5 illustrates the
interface options for the Model 2701RC Series.
Figure 5. Model 2701RC Series interface card options
Note The 2701RC Series function card is paired with a specially
designed rear card and must not be swapped with other Patton
rear 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 pegs 1 and 2, or on pegs 2 and 3.
Figure 6. Orientation of Interface Card Straps
The following sections describe the strap locations and possible settings
for each rear card.
Model
IM2RC/IA-48
C
RJ-48C

20
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 7 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 7: 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