Sigrand SG-16BG Bedienungsanleitung
SIGRAND
Integrated access device
SHDSL modem
Sigrand SG-16BG
User's Guide
v. 2.5
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 9
1.1.2 File trans er per ormance 10
1.2 Ethernet inter ace speci ications 11
1.3 Ethernet Bridge speci ications 11
1.4 E1 inter ace speci ications 11
1.5 RS-232C inter ace speci ications 11
1.6 Power supply unit 12
1.7 Miscellaneous data 12
1.8 Shipment contents 12
1.9 Environmental speci ications 12
1.10 Appearance, controls, indicators and connectors 13
1.10.1 Front panel and indicators 13
1.10.2 Rear panel and connectors 14
2. Modem setup directions 17
2.1 Connecting modem to a line 17
2.1.1 Requirements to a communication line 17
2.2 Choosing modem management method 18
2.3 ”Master”/”slave” mode 18
2.4 Setting DSL rate 18
2.4.1 Setting DSL rate or remote modem 18
2.4.2 Rate selection guidelines 19
2.5 Е1 inter ace setup 20
2.5.1 Connecting Е1 inter ace 20
2.5.2 Con iguring Е1 inter ace 20
2.5.2.1 Bandwidth sharing between Ethernet and E1
inter aces
20
3. Modem management via console port 22
3.1 Terminal setup 22
3.2 General purpose commands 22
The help command 23
3
The info command 23
The stat command 24
The default command 24
The reboot command 25
3.3 DSL inter ace management 25
The help dsl command 25
The dsl command 26
3.3.1 “Master”/”slave” mode selection 26
The dsl master and dsl slave commands 26
3.3.2 Setting DSL rate 26
3.3.2.1 Setting DSL rate rom “master” modem 27
The dsl rate command 27
3.3.2.2 Setting DSL rate manually both sides 27
3.3.3 Line coding selection 28
The dsl code command 29
3.3.4 Link statistics 29
The dsl stat command 29
The dsl stat reset command 30
3.3.5 How to orce a retrain 30
The dsl retrain command 30
3.4 Ethernet inter aces management 31
The help eth commands 31
The eth command 31
3.4.1 Rate and duplex type 31
The eth auto, eth /auto, eth rate, eth
half, eth full commands
32
3.4.2 Flow control 33
The eth flow eth /flow commands 33
3.5 Е1 inter ace management 34
The help e1 command 34
The e1 command 34
3.5.1 Long/Short Haul modes 34
The e1 short and e1 long commands 34
3.5.2 Framing modes and super rame options 35
The e1 framed and e1 /framed commands 35
4
3.5.3 Line coding 36
The e1 code command 36
3.5.4 Е1 inter ace statistics 36
The e1 stat command 36
3.5.5 Timeslot map 37
The e1 map command 38
3.5.5.1 Timeslot 0 40
3.5.5.2 Timeslot 16 41
4. Updating built-in modem irmware 42
Ho 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 of 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-16BG modem is a SНDSL-modem. It is able to exchange
heterogeneous IP and TDM tra ic through Ethernet inter aces and an E1
port.
LAN inter aces work through a built-in Ethernet-bridge and are designed to
connect distributed local area networks as well as remote computers and
other devices equipped with an Ethernet inter ace.
The bridge can transmit VLAN IEEE 802.1Q tags through the DSL inter ace
and the Ethernet inter aces.
Connection o TDM-based communication equipment such as telco
equipment, routers and access servers is provided through the Е1 inter ace
(G.703/G.704, 2048 kbps).
The SHDSL inter ace o the modem con orms to ITU-T G.991.2.bis
standard and uses ТСРАМ (Trellis-Coded Pulse Amplitude Modulation) line
coding.
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 – 6016
7
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-16BG modem line coding is compatible with all Sigrand
SG-16 series and Granch SBNI16 series modems.
Limitations of compatibility:
Interoperability with the Granch SBNI16 modems is
supported only within the compatible data rate range from
64 to 4608 kbps.
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 192 to 5696 kbps and the optional
extended range rom 64 to 6016 kbps
•two Ethernet 10/100Mb (IEEE 802.3) inter aces with Auto-Negotiation
and Auto MDI/MDI-X
•one Е1 inter ace (G.703/G.704, 2048 kbps)
•one EIA-232C (RS-232C) inter ace or modem management.
1.1 DSL interface specifications
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 64-6016
Data rate step, kbps 64
8
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 performance
Brie in ormation about the maximum reach per ormance o the Sigrand
SG-16BG 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
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)
6016 ТСРАМ32 Length (km/ t) 1.8/3500 2.2/7200
R (Ω)476 420
4608 ТСРАМ32 Length (km/ t) 2.0/6500 2.6/8500
R (Ω)560 455
3072 TCPAM16 Length (km/ t) 3.0/9800 4.2/13700
R (Ω)840 736
2304 TCPAM16 Length (km/ t) 3.8/12400 5.4/17700
R (Ω)1064 945
9
1536 TCPAM16 Length (km/ t) 4.4/14400 6.4/20100
R (Ω)1232 1120
1024 TCPAM8 Length (km/ t) 5.0/16400 7.6/24900
R (Ω)1400 1330
512 TCPAM8 Length (km/ t) 5.8/19000 9.0/29500
R (Ω)1624 1575
256 TCPAM8 Length (km/ t) 6.6/21600 10.0/32800
R (Ω)1848 1750
128 TCPAM4 Length (km/ t) 7.4/24200 11.4/37400
R (Ω)2072 1995
64 TCPAM4 Length (km/ t) 7.4/24200 11.4/37400
R (Ω)2072 1995
1.1.2 File transfer performance
Per ormance o the SG-16BG modem during ile trans erring by F P
protocol is shown on Table 3. The table contains average readings
obtained on a line with error rate less than 10-7.
able 3
Line data
rate
(kbps)
File trans er
per ormance
(KBps)
Line data
rate
(kbps)
File trans er
per ormance
(KBps)
6016 700 1792 209
5696 662 1536 179
4608 536 1280 149
4096 478 1024 119
3584 418 768 89
3072 354 512 59
2560 304 256 29
2304 261 192 22
2048 234 128 15
10
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