USER
MANUAL
MODEL 2715
NetLink-E1:
E1/Fractional E1 NTU
Part# 07M2715-UM
Doc# 08605U2-001,
Rev. C
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
Revised 10/26/06
C
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An ISO-9001
Certified Company
1.4 SERVICE INFORMATION
1.2 RADIO AND TV INTERFERENCE
All warranty and non-warranty repairs must be returned freight
prepaid and insured to Patton Electronics. All returns must have a
Return Materials Authorization number on the outside of the shipping
container. This number may be obtained from Patton Electronics
Technical Support at:
The Model 2715 generates and uses radio frequency energy,
and if not installed and used properly—that is, in strict accordance with
the manufacturer's instructions—may cause interference to radio and
television reception. The Model 2715 has been tested and found to
comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are
designed to provide reasonable protection from such interference in a
commercial installation. However, there is no guarantee that interference
will not occur in a particular installation. If the Model 2715 does cause
interference to radio or television reception, which can be determined
by disconnecting the cables, the user is encouraged to try to correct
the interference by one or more of the following measures: moving the
computing equipment away from the receiver, re-orienting the receiving
antenna, and/or plugging the receiving equipment into a different AC
outlet (such that the computing equipment and receiver are on different
branches).
tel: (301) 975-1007;
email: [email protected]
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
Patton Model 2715. Technical Services hours: 8AM to 5PM EST,
Monday through Friday.
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 2715 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 2715 also meets the Telecommunication technical
requirements CTR-13; 2.048 Mbps digital structured leased lines
(D2048S) attachment requirements for terminal equipment interface.
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2.0 GENERAL INFORMATION
2.3 SUPPORTED APPLICATIONS
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 arise during installation
or use of the unit, contact Patton Electronics Technical Services at
(301) 975-1007.
The Model 2715 provides an E1 network termination between E1
and Fractional E1 equipment and customer premises equipment (CPE)
such as a router. The Model 2715 can also be used as a high-speed
short haul modem for campus applications.
2.3.1 The 2715 as the Interface between the Telco and CPE
2.1 FEATURES
The Model 2715 provides the interface between an E1/Fractional
E1 multiplexer and a router or switch (See below).
• Terminates E1/FE1 Circuits over a 4-Wire RJ-48C interface
• Connects to standard CPE Serial Interfaces
• Common Framed nx64 rates up to 1.984 Mbps
• Unstructured Rate of 2.048 Mbps
• G.703 or G.704 Framing (with or without CRC-4, CAS multiframe)
• Selectable AMI or HDB3 Line Coding
E1/FE1
from
LAN
Model 2715
Internet
• Configuration via Control Port or Internal DIP Switches
• Seven Easy-to-Read LED Indicators Monitor Data & Diagnostics
• Internal, External or Receive Recover Clocking
• Also Operates as a High-Speed Point-to-Point Modem
• Compact Size Plugs Directly into a Router, Switch or other DTE
• Made in USA
64kbps to
2.042Mbps
DACS
Service Provider’s Network
MUX
Customer Site
2.3.2 The 2715 as a High-Speed Short Range Modem
2.2 GENERAL PRODUCT DESCRIPTION
The Model 2715 can also be installed into high-speed campus
applications. In this application, a pair of Model 2715 units operate as
short range modems (See below).
The Patton Model 2715 Network Termination Unit (NTU) terminates
both 2.048 Mbps G.703 E1 (clear channel) and fractional E1 G.704 (n
x 64) 4-wire circuit. housed in our MicroPak enclosure measuring only
9 x 5.3 x 2 cm (3.55 x 2.1 x 0.78 in.) the Model 2715 plugs directly
into the V.35 DTE interface of a router, switvh, FRAD, multiplexer or
other networking device.
Model 2715
Model 2715
Customer Site
Customer Site
The Model 2715 supports all necessary G.703/G.704 diagnostics,
DTE local/remote loops, and V.54 loop up/loop down. Diagnostics are
initiated via the Model 2715's control port, or through the DTE or line
interfaces. Easily readable LED indicators include TD, RD, Loss of
Sync (LOS), Alarm, Error, Test and Power. Configuration of the Model
2715 is done through the control port or using DIP switches.
The Model 2715 presents a RJ45 120 ohm interface to the line and a
V.35 interface to the customer's device using a Male M/34 connector.
An M/34 to DB-60 adapter cable is available for convenient connection
to Cisco routers. The Model 2715 is powered by an external Universal
Input 100-240VAC adapter.
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3.0 CONFIGURATION
SWITCH SET SUMMARY TABLE
The Model 2715 features configuration capability via hardware
switches or a software control port. This section describes all possible
hardware and software switch configurations of the Model 2715.
Position
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
Function
Line Coding
CAS Multiframe
CRC-4 Multiframe
Clock Mode
DTE Rate
Factory Default Selected Option
Off
Off
Off
Off
Off
Off
Off
Off
HDB3
Disabled
Disabled
Network
3.1 DIP SWITCH CONFIGURATION
The Model 2715 has eight internal DIP switches that allow configu-
ration for a wide range of applications. The eight switches are
accessed by opening the plastic case with a small screwdriver. Figure
1 (below) shows the location of the DIP switches on the bottom of the
printed circuit board.
2.048 Mbps
DTE Rate
Clear
DTE Rate
}
Channel
DTE Rate
DIP Switches
Software Configuration Port
Switch SW1: Line Coding
ON
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 2715s together as short
range modems, set both units to HDB3.
OFF
SW4
Off
On
Line Framing & Coding
HDB3
AMI
Figure 1. Model 2715 bottom view, showing location of DIP switches
Line Coding Options:
The Model 2715 DIP switches (Switches SW1 - SW8) can be con-
figured as either “On” or “Off”. Figure 2 (below) shows the orientation
of the DIP switches with respect to ON/OFF positions.
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
requirements. Use HDB3 unless AMI is required in your
application .
ON
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.
OFF
Figure 2. Close up of DIP switches showing ON/OFF positions.
The switch is shown in the Off position.
Default positions for Switches SW1-SW8 are shown in the table on
the following page. Descriptions of each switch follow the table.
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Switch SW2: CAS Multiframe
UNFRAMED (G.703)
SW3
SW4
Clock Mode
The Channel Associated Signaling (CAS) multiframe uses Timeslot 16
(TS16) to send multiframe (MF) alignment data. In CAS MF, a multi-
frame 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 2715 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 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 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.
Off
Off
On
On
Off
On
On
Off
Network (Default)
Internal
External
Network
CLOCK MODES
Network Clock Transmitter timing is derived from the received line
signal.
Internal Clock Transmitter clock is derived from an internal clock
source.
External Clock Transmitter timing is derived from the local DTE
device. Valid only in unframed mode.
SW2
Off
On
Option
Disabled
Enabled
Note: When using the 2715 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.
Switch SW3 & SW4: CRC-4 Multiframe/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 independently of
CAS 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 trans-
mitting 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.
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
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off
On
On
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
Clear Channel (2.048Mbps)
64kbps
128kbps
192kbps
256kbps
384kbps
512kbps
640kbps
768kbps
1024kbps
1280kbps
1536kbps
1600kbps
1920kbps
1984kbps
invalid
In unframed mode, SW3 is used to along with SW4 to determine the
clock mode. In unframed mode, the model 2715 can be set to network,
internal or external clock mode. This is done by setting both SW3 and
SW4 to the on position.
In framed mode SW4 is used alone to determine the 2715 transmitter
timing. The 2715 can be set to Network or Internal clock.
The following charts represent both cases.
MULTIFRAME(G.704)
SW3
CRC-4 MF
SW4 Clock Mode
On
Off
On
Off
Off
On
Network
Internal
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NOTE: When the data rate is set to 2.048Mb/s, then the unit is
forced into G.703 mode, and it transmits user data on all 32
timeslots. There is no framing information; therefore, the CAS MF
(SW2)and CRC-4 (SW3) switches are ignored. In all other rate
settings, the unit employs G.704 framing; TS0 is reserved for
signaling.
Baud rate: 9600
Parity: None
Data Length: 8
Stop Bits: 1
Default terminal type:
VT100
Off
Off
On
Local Echo:
Add Line Feeds after CRs:
Received Backspace Destructive:
Backspace key sends:
BS
3.2 SOFTWARE CONFIGURATION
XON/XOFF software flow control:
CTS/RTS hardware flow control:
On
Off
The Model 2715 features a menu-driven command system that
allows you to monitor/configure its operating parameters. Follow the
instructions below to configure the Model 2715 using the software
switches:
DSR/DTR hardware flow control:
Off
4) When the unit is first turned on, the terminal screen may
appear blank. Press the [Enter] key. If your serial connection
is good, then the unit will immediately display a password
prompt. The following message will appear in the middle of
the screen:
1) Plug the 9-pin male end of the cable to your terminal or
computer’s DB-9 serial port and start up the terminal emulator
software if necessary. Plug the miniature stereo plug into the
rear of the unit. The small recessed jack on the right side of
the unit is the control port jack.
NOTE: If your terminal uses a DB-25 connector, please use
a DB-9 to DB-25 Adapter to connect to the cable (See Model
18PC-M).
Patton Electronics
Menu Management
2) Power up the terminal and set its RS-232 port as follows:
Enter Password: _
9600 Baud
8 data bits, 1 stop bit, no parity
Local echo off
ANSI or VT-100 emulation
Xon/Xoff software flow control enabled
5) Type in the password and press [Enter]. The factory default
password for the unit is:
3) Here is an example of a terminal emulator setup session. In
normal font are the various parameter types. In bold type are
the values that should be used for best results. Your terminal
program’s setup screen may differ from this one:
patton
NOTE: The password is case sensitive. If the entry is incor-
rect, the password screen will clear and prompt you again for
the correct password. The password you enter will not be
shown. For security, asterisks will be displayed for each letter
you type. The maximum length of the password, which can
include any character the terminal can generate, is 16 charac-
ters.
6) The Model 2715 will then display the Main Menu screen.
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3.2.1 Introduction to Main Menu
The Main Menu options are briefly described below.
After entering the password, you may access all of the system’s
functions and parameters. The Main Menu looks like this:
a
System Configuration options allow you to change various
aspects of the Model 2715’s operation, e.g., framing, line cod-
ing, and aggregate bandwidth.
System Diagnostics/Statistics options allow you to monitor
the network performance, initiate V.54 loops, local loops, and
send test patterns. Network performance parameters are
updated once a second, giving you the ability to quickly deter-
mine if there is a problem.
b
Unit Options allow you to customize the Model 2715 for your
location. You can change the default header names to give
each unit a unique name and password. Also, you can reset
the unit to its default settings without the manual. It also has a
Service Information screen in case you need technical assis-
tance from Patton.
c
Save Changes Once you have configured the unit to your
satisfaction, you can save the changes permanently by exe-
cuting the Save Changes command. This will update the unit’s
configuration and save all the parameters to permanent mem-
ory.
d
e
HELPFUL HINTS
1. To make a selection, key the highlighted letter that corre-
sponds to a menu selection.
Logoff For security, log off the control menu by executing the
Logoff command. This will blank the screen until an [Enter]
key is pressed.
2. To execute the selection, type [Enter/CR].
3. To toggle between options on a highlighted selection, Press
[space].
d
4. Select g Save Changes from Main Menu after making modi-
fications to any Model 2715 parameter. Otherwise, changes
will be lost when the Model 2715 is turned off.
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b
Line Coding: HDB3 (default)
3.2.2 System Configuration
Options: AMI, HDB3
The System Configuration menu looks l |