Sigrand SG-16G2 Bedienungsanleitung
SIGRAND
SHDSL modem
Sigrand SG-16G2
User's Guide
v. 2.4
Novosibirsk
2006
1
© 2005, 2006 Sigrand LLC
All trademarks and registered trademarks mentioned hereina ter are the
property o their respective owners.
2
Contents
Contents page
How to use this Guide 5
1. Modem description 7
1.1 DSL inter ace speci ications 8
1.1.1 Maximum reach per ormance 8
1.2 E1 inter ace speci ications 9
1.3 RS-232C inter ace speci ications 10
1.4 Power supply unit 10
1.5 Miscellaneous data 10
1.6 Shipment contents 10
1.7 Environmental speci ications 11
1.8 Appearance, controls, indicators and connectors 11
1.8.1 Front panel and indicators 11
1.8.2 Rear panel and connectors 12
2. Modem setup directions 15
2.1 Connecting modem to a line 15
2.1.1 Requirements to a communication line 15
2.2 Choosing modem management method 16
2.3 ”Master”/”slave” mode 16
2.4 Setting DSL rate 16
2.4.1 Rate selection guidelines 17
2.5 E1 inter ace setup 17
2.5.1 Connecting E1 inter ace 17
2.5.2 Con iguring Е1 inter ace 18
3. Modem management via console port 20
3.1 Terminal setup 20
3.2 General purpose commands 20
The help command 21
The info command 21
The stat command 22
The default command 22
The reboot command 23
3.3 DSL inter ace management 23
The help dsl command 23
3
The dsl command 24
3.3.1 “Master”/”slave” mode selection 24
The dsl master and dsl slave
commands
24
3.3.2 Setting DSL rate 24
The dsl rate command 24
3.3.3 Line coding selection 25
The dsl code command 25
3.3.4 Link statistics 26
The dsl stat command 26
The dsl stat reset command 26
3.3.5 How to orce a retrain 27
The dsl retrain command 27
3.4 Е1 inter aces management 27
The help e1 command 27
The e1* command 28
3.4.1 Long/Short Haul modes 28
The e1* short and e1* long
commands
28
3.4.2 Framing modes and super rame options 28
The e1* framed and e1* /framed
commands
29
3.4.3 E1 line coding 30
The e1* code command 30
3.4.4 Е1 inter ace statistics 30
The e1* stat command 30
3.4.5 Timeslot map 31
The e1* map command 31
3.4.5.1 Timeslot 0 34
3.4.5.2 Timeslot 16 34
3. Updating built-in modem irmware 36
4
How to use this Guide
To ease using this Guide the ollowing notational conventions are provided
here (icons as well as relevant onts):
Icons
Icon Meaning Explanation
Pay attention!
The text marked by this icon
contains in ormation making easy
setup and maintenance o
equipment
Important
in ormation!
The text marked by this icon
contains important in ormation
explaining details o operation o
equipment or so tware. This allows
to save your time and e orts while
equipment setup
Do not make this!
Knowing this in ormation allow you
to avoid actions that can cause
damage to hardware and/or
personal injury
5
Font usage
Designation Explanation
Picture on the screen This ont shows contents o terminal
screen while modem setup.
Name o keyboard button
This ont shows computer keyboard
buttons, e.g. ”Enter”, which are used
in the console management mode.
Select Property in the File
menu
Italic notes the ragments o this Guide
containing important in ormation
(together with the relevant icons). It
also marks so tware buttons o menu
in the text.
dsl stat
Bold ont is used to designate modem
management commands while a
terminal session.
Before starting installation of the modem we recommend you
to look for a updated version of this User's Guide as well as
the firmware and the drivers available at our site
www.sigrand.com
6
1. Modem description
The Sigrand SG-16G2 modem is a SНDSL-modem. It eatures two E1
system inter aces (ITU-T G.703/G.704, 2048 kbps) and is intended to be
used as a line termination unit o TDM-based communication equipment.
The modem allows to make connections between devices equipped with E1
inter aces such as telco equipment, routers and access servers.
The key eature o the modem is the capability to transmit two Е1 trunks
through a single SHDSL inter ace.
Features o the ТСРАМ line coding:
The ТСРАМ line coding used by G.991.2 (G.SHDSL) compatible modems
has a ew modes. The modes di er in complexity o coding algorithm. The
modes with larger number o modulation positions (ТСРАМ16, ТСРАМ32)
are applicable or higher rates, the modes with less number o modulation
positions (ТСРАМ4, ТСРАМ8) are applied or lower rates. Respectively, the
more complicated the coding algorithm the worse the channel noise
immunity and vice versa.
So take special attention to the ТСРАМ line coding algorithm selection while
con iguring the line rate. It may be necessary to change the line coding to
achieve the best result.
Table 1 shows the line coding options and respective data rate ranges.
able 1
Line coding Data rate range (kbps)
TCPAM32 256 – 4096
TCPAM16 192 – 3840
TCPAM8 192 – 1216
TCPAM4 64 – 704
Manual line coding selection is available only in the console
management mode – see chapter 3 of this Guide.
Compatibility:
The Sigrand SG-16G2 modem line coding is compatible with all Sigrand
SG-16 series and Granch SBNI16 series modems.
7
The modem eatures the ollowing inter aces:
•one SHDSL inter ace (con orms to ITU-T G.991.2.bis standard)
providing the data rate range rom 64 to 4096 kbps.
•two Е1 inter aces (G.704/704, 2048 kbps).
•one EIA-232C (RS-232C) inter ace or modem management.
1.1 DSL inter ace speci ications
Link type point-to-point
Number o wires per line 2 (one pair)
Permitted cabling any UTP
Line coding TCPAM
Input/output impedance, Ω135
Data rate range, kbps 64-4096
Data rate step, kbps 64
Transmission type ull duplex
Data trans er mode synchronous, by packets
Packet type HDLC
Checksum type CRC32
Connector type RJ-45
Galvanic decoupling trans ormer
breakdown voltage, min, V
1500
Surge protector triggering voltage
(di erential), V
30
Arrester breakdown voltage (common-
mode), V
350
1.1.1 Maximum reach per ormance
Brie in ormation about the maximum reach per ormance o the Sigrand SG-
16G2 modem is shown on Table 2. The Bit Error Rate (BER) at the
maximum reach is equal to or less than 10-7. The speci ied reach is proved
by testing at the Sigrand lab re erence line. Full version o the rate table is
8
available at our site www.sigrand.com. An actual reach may vary against
the shown data due to variations o cable per ormance.
able 2
Data rate
(kbps) Line coding Rating
TPP50-0.4
cable
(26 AWG)
TPP50-0.5
cable
(24 AWG)
4096 TCPAM32
Length (km/k t) 2.2/7200 3.0/9800
R (Ω)616 525
3072 TCPAM32
Length (km/k t) 3.0/9800 4.2/13700
R (Ω)840 735
2048 TCPAM32
Length (km/k t) 3.8/12400 5.6/18300
R (Ω)980 1064
1536 TCPAM16 Length (km/k t) 4.4/14400 6.4/20900
R (Ω)1232 1120
1024 TCPAM16 Length (km/k t) 5.0/16400 7.6/24900
R (Ω)1400 1330
512 TCPAM8 Length (km/k t) 5.8/19000 9.0/29500
R (Ω)1624 1575
256 TCPAM8 Length (km/k t) 6.6/21600 10.0/32800
R (Ω)1848 1750
128 TCPAM4 Length (km/k t) 7.4/24200 11.4/37400
R (Ω)2072 1995
64 TCPAM4 Length (km/k t) 7.4/24200 11.4/37400
R (Ω)2072 1995
1.2 E1 inter aces speci ications
Type o inter ace RJ-45, Balanced
Number o wires per line 4
Line coding HDB3, AMI
Data rate, kbps 2048
9
Maximum reach, km ( t)
TPP50-0.4 cable (26 AWG) 1.2 (3900)
TPP50-0.5 cable (24 AWG) 2.4 (7800)
Frame type G.704
Super rame types CRC4, CAS
Un ramed mode available
1.3 RS-232C inter ace speci ications
Baud rate 9600, 57600
Protocol 8-N-1
Flow control N/A
Connector type RJ-45 (DB-9F with converter)
1.4 Power supply unit
Type BPN-12-1V
Input voltage 220V/50Hz
Output voltage 12V
Maximum load current 1A
Polarity o the central contact o the connector positive
1.5 Miscellaneous data
Overall modem dimensions:
height, mm/in. 45/1.77
•width, mm/in. 225/8.86
•depth, mm/in. 165/6.5
Weight, g/lb 450/1
Weight with PSU, g/lb 1100/2.43
Power consumption, W 6
1.6 Shipment contents
Sigrand SG-16G2 modem 1 pc.
10
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