Sunway SMG-B Series User manual

Synway SMG-B Series Analog Gateway
SMG1004B
SMG1008B
SMG1016B4
SMG1032B4
Analog Gateway
Version 1.6.4
Synway Information Engineering Co., Ltd
www.synway.net

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page i
Content
Content ................................................................................................i
Copyright Declaration...........................................................................iii
Revision History....................................................................................iv
Chapter 1 Product Introduction............................................................1
1.1 Typical Application......................................................................................... 2
1.2 Feature List.................................................................................................... 2
1.3 Hardware Description .................................................................................... 4
1.3.1 SMG-B 4-port Analog Gateway.................................................................................4
1.3.2 SMG-B 8-port Analog Gateway.................................................................................5
1.3.3 SMG-B 16-port Analog Gateway...............................................................................5
1.3.4 SMG-B 32-port Analog Gateway (Unsupported).......................................................7
1.4 Indicator Info..................................................................................................7
Chapter 2 Quick Guide..........................................................................9
Chapter 3 WEB Configuration............................................................14
3.1 System Login............................................................................................... 14
3.2 Operation Info.............................................................................................. 15
3.2.1 System Info.............................................................................................................15
3.2.2 Channel State.........................................................................................................16
3.2.3 Call Count...............................................................................................................17
3.2.4 SIP Message Count................................................................................................18
3.3 Quick Config................................................................................................ 18
3.4 VoIP Settings ............................................................................................... 20
3.4.1 SIP..........................................................................................................................21
3.4.2 SIP Compatibility.....................................................................................................22
3.4.3 SIP Station..............................................................................................................25
3.4.4 SIP Server ..............................................................................................................27
3.4.5 NAT Setting.............................................................................................................29
3.4.6 Media......................................................................................................................32
3.5 Advanced Settings....................................................................................... 34
3.5.1 FXS.........................................................................................................................35
3.5.2 FXO........................................................................................................................37
3.5.3 Tone Detector .........................................................................................................39
3.5.4 Tone Generator.......................................................................................................41
3.5.5 DTMF......................................................................................................................42
3.5.6 Ringing Scheme .....................................................................................................43
3.5.7 Fax..........................................................................................................................44
3.5.8 Function Key...........................................................................................................46
3.5.9 Dialing Rule ............................................................................................................47
3.5.10 Dialing Timeout.......................................................................................................50
3.5.11 Cue Tone ................................................................................................................51
3.5.12 Color Ring...............................................................................................................52
3.5.13 QoS ........................................................................................................................53

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page ii
3.5.14 Action URL..............................................................................................................54
3.6 Port Settings................................................................................................ 54
3.6.1 FXS.........................................................................................................................54
3.6.2 FXO........................................................................................................................59
3.6.3 Port Group..............................................................................................................63
3.7 Route Settings............................................................................................. 67
3.7.1 Routing Parameters................................................................................................68
3.7.2 IP to Tel...................................................................................................................68
3.7.3 Tel to IP...................................................................................................................71
3.8 Number Manipulation................................................................................... 73
3.8.1 IP to Tel CallerID.....................................................................................................73
3.8.2 IP to Tel CalleeID....................................................................................................77
3.8.3 Tel to IP CallerID.....................................................................................................78
3.8.4 Tel to IP CalleeID....................................................................................................81
3.9 System Tools ............................................................................................... 82
3.9.1 Management...........................................................................................................83
3.9.2 Network..................................................................................................................84
3.9.3 Upgrade..................................................................................................................85
3.9.4 Signaling Capture...................................................................................................87
3.9.5 Data Recording.......................................................................................................88
3.9.6 Call Log ..................................................................................................................88
3.9.7 Operation Log.........................................................................................................89
3.9.8 Backup & Upload....................................................................................................90
3.9.9 Factory Reset .........................................................................................................91
3.9.10 System Monitor.......................................................................................................91
3.9.11 Centralized Manage................................................................................................92
3.9.12 Access Control........................................................................................................93
3.9.13 PING Test ...............................................................................................................95
3.9.14 TRACERT Test .......................................................................................................96
3.9.15 Change Password ..................................................................................................97
3.9.16 Restart....................................................................................................................97
Appendix A Technical Specifications.................................................98
Appendix B Troubleshooting..............................................................99
Appendix C Technical/sales Support...............................................102

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page iii
Copyright Declaration
All rights reserved; no part of this document may be reproduced or transmitted in any form or by
any means, electronic or mechanical, without prior written permission from Synway Information
Engineering Co., Ltd (hereinafter referred to as ‘Synway’).
Synway reserves all rights to modify this document without prior notice. Please contact Synway
for the latest version of this document before placing an order.
Synway has made every effort to ensure the accuracy of this document but does not guarantee
the absence of errors. Moreover, Synway assumes no responsibility in obtaining permission and
authorization of any third party patent, copyright or product involved in relation to the use of this
document.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page iv
Revision History
Version Date Comments
Version 1.0.0 2015-06 Initial publication
Version 1.0.1 2015-08 New revision
Version 1.0.2 2015-10 New revision
Version 1.0.2 2015-12 New revision on Version 1.0.2
Version 1.1.0 2016-03 New revision
Version 1.6.3 2016-12 New revision
Version 1.6.4 2017-02 New revision
Note: Please visit our website http://www.synway.net to obtain the latest version of this document.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 1
Chapter 1 Product Introduction
Thank you for choosing Synway SMG-B Series Analog Gateway!
The Synway SMG-B series analog gateway products (hereinafter referred to as ‘SMG-B analog
gateway’) are mainly used for connecting traditional phone sets, fax machines and PBXes with
the IP telephony network or IP PBX. It provides a powerful, reliable and cost-effective VoIP
solution for such occasions as IP call centers and multi-branch agencies.
See below table for the modules of SMG-B series analog gateway:
Module Amount of FXS Port Amount of FXO Port
SMG1004B-4S 4 0
SMG1004B-2S2O 2 2
SMG1004B-4O 0 4
SMG1008B-8S 8 0
SMG1008B-4S4O 4 4
SMG1008B-8O 0 8
SMG1016B4-16S 16 0
SMG1016B4-8S8O 8 8
SMG1016B4-16O 0 16
SMG1032B4-32S 32 0
SMG1032B4-24S8O 24 8
SMG1032B4-16S16O 16 16
SMG1032B4-32O 0 32
Table 1 Model List
Note: The modules written in black are supported, while those in gray are not yet supported.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 2
1.1 Typical Application
Figure 1-1 Typical Application
1.2 Feature List
Basic Features Description
TDM Call Call initiated from TDM to IP, via routing and number manipulation to obtain the
called IP address.
IP Call Call initiated from IP to TDM, via routing and number manipulation to obtain the call
destination.
Number Manipulation Peels off some digits of a phone number from left/right, or adds a prefix/suffix to a
phone number.
Call Forward Three options available: Unconditional, Busy and No Reply.
Call Waiting When an FXS channel receives another call while it is in conversation, it will have the newly received call keep waiting. Once the current call is finished, the new one
will ring the FXS channel and wait for its answer.
Auto Dial If there is no dialing operation in a designated time period after pickup, the preset
Headquarter
Subscriber
Terminal
IP Phone
Tel TelFax
FXS IP Phone
LAN
LAN
Router FXO
FXO
Branch 1
SMG-B
Gateway
Subscriber
Terminal IP Phone
Tel TelFax
FXS
LAN
Router
IP Phone
FXO
Branch 2
SMG-B
Gateway
Subscriber
Terminal IP Phone
Tel TelFax
FXS
LAN
Router
IP Phone
FXO
FXO
Internet
SMG-B Gateway
SMG-B Gateway

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 3
auto dial number will be called.
Do Not Disturb Rejects all the incoming calls to the channel.
CID Displays the CallerID.
Echo Cancellation Provides the echo cancellation feature for a call conversation over the FXS
channel.
TDM/VoIP Routing Sets a routing path: from IP to TDM or from TDM to IP.
Fax Provides multiple fax parameters: fax mode, maximum fax rate, fax train mode,
error correction mode, etc.
Communication
without Power
Enable a connection of the station which is linked with the FXS port and the trunk
which is linked with the FXO port to keep the calls between the FXS port and PSTN
uninterrupted during power outage.
Communication
without Network Automatically routes a call to the proper port according to the configuration in case of network failure or call timeout.
Send Polarity Reversal
Signal Sends the polarity reversal signal to a corresponding FXS channel when the called party pick-up behavior is detected.
Detect Polarity
Reversal Signal Turns a corresponding channel into the talking state when the FXO port detects the polarity reversal signal.
Simultaneous Register
to Multiple Servers Registers the gateway to a master registrar server and a spare registrar server simultaneously.
IMS Network Registers the gateway to a server under IMS network.
SIP Station Supports a SIP terminal to be registered to the gateway and become a SIP station.
Group Ringing Rings all the idle FXS ports in a port group.
Ringing by Turns Rings the FXS ports in a port group by turns according to the Rule for Ringing by
Turns.
Preemptive Answer When a channel in a port group is ringing, another channel in the same port group
can press the preemptive answer keyboard shortcut to transfer the call from the
ringing channel to the current channel.
Centralized Manage The gateway can register to Synway DCMS and accept the management of the
platform.
Signaling & Protocol Description
SIP Signaling Supported protocol: SIP V1.0/2.0, RFC3261.
Voice CODEC G.711A, G.711U, G.729A/B, G.723, G.722, AMR, iLBC
DTMF Mode RFC2833, SIP INFO, INBAND
Network Description
Network Protocol Supported protocol: TCP/UDP, HTTP, ARP/RARP, DNS, NTP, TFTP, TELNET,
STUN.
Static IP IP address modification support.
DHCP IP address dynamic allocation support.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 4
DNS Domain Name Service support.
Security Description
Admin Authentication Supports admin authentication to guarantee the resource and data security.
System Monitor Monitors the running status of the system and the server.
Maintain & Upgrade Description
WEB Configuration Support of configurations through the WEB user interface.
Language Chinese, English.
Software Upgrade Support of user interface, gateway service, kernel and firmware upgrades based
on WEB.
Tracking Test Support of Ping and Tracert tests based on WEB.
SysLog Type Three options available: ERROR, WARNING, INFO, DEBUG.
1.3 Hardware Description
1.3.1 SMG-B 4-port Analog Gateway
The SMG-B 4-port analog gateway has three types: SMG1004B-4S (4 FXS ports),
SMG1004B-2S2O (2 FXS ports and 2 FXO ports) and SMG1004B-4O (4 FXO ports). It supports
one LAN and adopts an external 12V power supply. See below for product appearance (taking
SMG1004B-4S for example).
Figure 1-2 SMG1004B-4S Front View
Network Port RJ11 Interface
Console
Reset Button Power
Network
Indicator
Alarm & Run Indicator
Power
Indicator
Channel Indicator

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 5
Figure 1-3 SMG1004B-4S Rear View
1.3.2 SMG-B 8-port Analog Gateway
The SMG-B 8-port analog gateway has three types: SMG1008B-8S (8 FXS ports),
SMG1008B-4S4O (4 FXS ports and 4 FXO ports) and SMG1008B-8O (8 FXO ports). It supports
one LAN and adopts an external 12V power supply. See below for product appearance (taking
SMG1008B-8S for example).
Figure 1-4 SMG1008B-8S Front View
Figure 1-5 SMG1008B-8S Rear View
1.3.3 SMG-B 16-port Analog Gateway
The SMG-B 16-port analog gateway has three types: SMG1016B4-16S (16 FXS ports),
SMG1016B4-8S8O (8 FXS ports and 8 FXO ports) and SMG1016B4-16O (16 FXO ports). It
supports one LAN. See below for product appearance (taking SMG1016B4-16S for example).
Figure 1-6 SMG1016B4-16S Front View
Console Port
Channel Indicator
Alarm Indicator
Reset Button
Power Indicator
Run Indicator
ACT Indicator
LINK Indicator
Network Port RJ11 Interface
Console
Reset Button Power
Network
Indicator
Alarm & Run Indicator
Power
Indicator
Channel Indicator

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 6
Figure 1-7 SMG1016B4-16S Rear View
Figure 1-8 SMG1016B4-16S Left View
The table below gives a detailed introduction to the interfaces, buttons and LEDs illustrated
above:
Interface Description
Amount: 1
Type: RJ-45
Bandwidth: 10/100 Mbps
Self-Adaptive Bandwidth Supported
Auto MDI/MDIX Supported
LAN
Built-in Link indicator and ACTIVE indicator. For more details, refer to 1.4 Indicator
Info
Amount: Depends on the model of SMG-B analog gateway
Type: RJ-11, RJ-45
Maximum Transmission Distance: 5000m
FXS
Charge Mode: Negative Anti-billing Supported
Amount: 1
Type: RS-232
Baud Rate: 115200bps
Connector: RJ45 to DB-9 Connector
Data Bits: 8 bits
Stop Bit: 1 bit
Parity Unsupported
Console Port
Flow Control Unsupported
External Power Supply
Interface
Provide the 12V voltage with positive inside and negative outside, and the current
is larger than 3A
Button Description
Reset Button Restore the gateway to factory settings by pressing this button persistently for 3
seconds
LED Description
Power Indicator Indicates the power state. It lights up when the gateway starts up with the power
Ventilation Holes Screw Holes for Foot Bracket
Ethernet
RJ45 Interface
Grounding Stun
220V AC Power Key

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 7
cord well connected
Run & Alarm Indicator Indicates the running status. For more details, refer to 1.4 Indicator Info.
Network Indicator Indicates the connection status of the network. For more details, refer to 1.4
Indicator Info
Channel Indicator
1. When the channel is idle, the LED Lights up;
2. When the channel is off-hook, the LED flashes slowly;
3. When the channel is ringing, the LED flashes fast.
For other hardware parameters, refer to Appendix A Technical Specifications.
1.3.4 SMG-B 32-port Analog Gateway (Unsupported)
The SMG-B 32-port analog gateway has four types: SMG1032B4-32S (32 FXS ports),
SMG1032B4-24S8O (24 FXS ports and 8 FXO ports), SMG1032B4-16S16O (16 FXS ports and
16 FXO ports) and SMG1032B4-32O (32 FXO ports). It supports one LAN.
1.4 Indicator Info
The SMG-B analog gateway is equipped with two indicators denoting the system’s running status:
Run & Alarm Indicator (bi-color LED) and Network Indicator (bi-color LED). The table below
explains the states and meanings of the two indicators.
LED State Description
Go out System is not yet started.
Orange LED light up Device works normal upon system startup.
Orange LED flash fast Device works normal upon system startup.
Green LED flash slowly Device works normal during system runtime.
Run & Alarm Indicator
Others Device works abnormal
Go out No network connection
Red LED light up and flash Bandwidth 10 Mbps
Network Indicator
Orange LED light up and flash Bandwidth 100Mbps
Go out Network is not yet connected or the network connection is
10Mbps
LINK Indicator
Green LED light up Connect to 100Mbps network, and network connection is
normal.
Go out
Connect to 10Mbps network: communication is normal;
While connect to 100Mbps network: Communication is
abnormal.
ACTIVE Indicator
Orange LED light up and flash Communication is normal.
Note:
The startup process consists of two stages: System Booting and Gateway Service
Startup. The system booting costs about 1 minute and once it succeeds, the run & alarm
indicator is orange and lights up or flashes. Then after the gateway service is
successfully started and the device begins to work normally, the run & alarm indicator is
green and flashes slowly.
During runtime, if the run & alarm indicator is orange and lights up or flashes, it indicates
that the device goes abnormal. If you cannot figure out and solve the problem by yourself,

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 8
please contact our technicians for help. Go to Appendix C Technical/sales Support to find
the contact way.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 9
Chapter 2 Quick Guide
This chapter is intended to help you grasp the basic operations of the SMG-B analog gateway in
the shortest time.
Step 1: Confirm that your packing box contains all the following things.
SMG-B Series Analog Gateway *1
External 12V Power Adapter *1 (Unnecessary for SMG-16B)
Network Cable *1
Warranty Card *1
Installation Manual *1
Step 2: Connect the network cable.
These series products provide RJ-45 interfaces.
Step 3: Connect the telephone line.
The SMG-B 8-port analog gateway provides RJ11 interfaces. You can use a common telephone
line directly or construct a telephone line by yourself according to Figure 2-1. Note that only the
middle two cores in the RJ11 jack are valid for use.
Figure 2-1 RJ11 Connection
The SMG-B 16-port analog gateway has four 8-pin RJ45 jacks each of which can be connected to
four 2-pin RJ11 jacks via a 4-way hub. Take the first RJ45 jack for example, the matching
relationship among the channel number, the pins of the RJ45 jack and the 4-way hub is shown in
the table below.
Interface Channel Number Pins of the RJ45 Jack 4-way Hub
1 1st and 2nd pins 1st jack
2 3rd and 4th pins 2nd jack
3 5th and 6th pins 3rd jack
First RJ45
Jack
4 7th and 8th pins 4th jack
Table 2-1 Matching Relationship among Channel Number, Pins of RJ45 Jack and 4-way Hub
Step 4: Power on and start the gateway.
To use the SMG-B 8-port analog gateway, you need an external power supply. Insert it to the
power interface of the SMG-8B series analog gateway and power it on with 100~240V AC. See
the figure below:
TIP
RING
4
3
2
1
RJ11

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 10
Figure 2-2 SMG-B Power Connection
Step 5: Log in the gateway.
Enter the original IP address (192.168.1.101) of the SMG-B analog gateway in the browser to go
to the WEB interface of the gateway. The original username and password of the gateway are
both ‘admin’. For detailed instructions about login, refer to 3.1 System Login. We suggest you
change the initial username and password via ‘System Tools Change Password’ on the WEB
interface as soon as possible after your first login. For detailed instructions about changing the
password, refer to 3.9.15 Change Password. After changing the password, you are required to log
in again.
Step 6: Modify IP address of the gateway.
You can modify the IP address of the gateway via ‘System Tools Network’on the WEB interface
to put it within your company’s LAN. Refer to 3.9.2 Network for detailed instructions about IP
modification. After changing the IP address, you shall log in the gateway again using your new IP
address.
Step 7: Make phone calls.
Note: For your easy understanding and manipulation, all examples given in this step do not
involve registration, that is, SIP initiates calls in a point-to-point mode.
Situation 1: Call from a station to another (TelTel)
The gateway allows two FXS ports to call each other by default. Just use a station connected with
an FXS port to dial the number of the destination FXS port and you can make a TelTel call. The
default number of an FXS port is 80XX, among which XX represents the corresponding port
number. For example, the default number corresponding to Port 1 is 8001, and that corresponding
to Port 8 is 8008.
Actually a TelTel call on the gateway is accomplished via the routing of TelIPIPTel. For
detailed introductions and configuration guide, refer to Q2 in Appendix B.
Situation 2: Call from a station to an IP phone (TelIP)
1. Go to ‘Advanced Settings Dialing Rule’ on the WEB interface and click the ‘Add New’
button to add a new dialing rule. Refer to 3.5.9 Dialing Rule for detailed instructions. Enter
either a particular number or a string of ‘x’s to represent several random numbers. For
example, ‘xxx’ denotes 3 random numbers. You may use the default value of ‘Index’ and are
External Power Supply
offers 12V voltage

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 11
required not to leave ‘Description’ empty.
Example: Set Index to 99, fill in Description with test and configure Dial Rule to 123.
2. Go to ‘Port Settings Port Group’ on the WEB interface and click the ‘Add New’ button to
create a new port group and add FXS ports which are connected with stations to it. Refer to
3.6.3 Port Group for detailed instructions. You may use the default values of other
configuration items and are required not to leave ‘Description’ empty.
Example: Provided the FXS port which is connected with a station is Port1, check the
checkbox before Port1, set Index to 1, fill in Description with test, and keep the default
values of other configuration items.
3. Go to ‘Route Settings TelIP’ on the WEB interface and click the ‘Add New’ button to add
a new routing rule. Refer to 3.7.3 TelIP for detailed instructions. Select the port group
created in Step2 as ‘Source Port Group’ and fill in ‘Destination IP’ and ‘Destination Port’ with
the IP address and the Port number you plan to call. You may use the default values of other
configuration items and are required not to leave ‘Description’ empty.
Example: Provided the remote IP address intended to call is 192.168.0.111 and the port is
5060. Set Index to 63, Source Port Group to 1, fill in Description with test, configure
Destination IP to 192.168.0.111, Destination Port to 5060, and keep the default values of
other configuration items.
4. Pick up the station and dial the number set in Step1 to ring the remote IP phone. If you have
set a particular number in Step 1, only this number you can dial; if you have set a string of ‘x’s,
how many ‘x’s there are, how many random numbers you can dial.
Example: Pick up the station and dial 123. Then the IP phone with the IP address
192.168.0.111 and the port 5060 will ring.
Situation 3: Call from an IP phone to a station (IP Tel)
1. Go to ‘Port Settings Port Group’ on the WEB interface and click the ‘Add New’ button to
create a new port group and add FXS ports which are connected with stations to it. Refer to
3.6.3 Port Group for detailed instructions. You may use the default values of other
configuration items and are required not to leave ‘Description’ empty.
Example: Provided the FXS port which is connected with a station is Port1, check the
checkbox before Port1, set Index to 1, fill in Description with test, and keep the default
values of other configuration items.
2. Go to ‘Route Settings IPTel’ on the WEB interface and click the ‘Add New’ button to add
a new routing rule. Refer to 3.7.2 IPTelfor detailed instructions. Fill in ‘Source IP’ with the
IP address which initiates the call and select the port group created in Step1 as ‘Destination
Port Group’. You may use the default values of other configuration items and required not to
leave ‘Description’ empty.
Example: Provided the IP address of the IP phone which initiates the call is 192.168.0.111.
Set Index to 63, Destination Port Group to 1, fill in Description with test, configure Source
IP to 192.168.0.111, and keep the default values of other configuration items.
3. Pick up the IP phone and call the IP address and port of the SMG-B analog gateway to ring
the station.
Example: Provided the IP address of the SMG-B analog gateway is 192.168.0.101 and the
port is 5060, use the IP phone to call the IP address 192.168.0.101 and the station connected
with Port1 will ring.
Step 8: Enable the auto dial feature. (Skip this step if not necessary.)
Go to the Port Settings interface to enable the auto dial feature and set the parameters ‘Auto Dial
Number’ and ‘Wait Time before Auto Dial’. If there is no dialing operation in a time period (i.e. Wait
Time before Auto Dial) after pickup, the port will automatically call the preset number (i.e. Auto
Dial Number). Refer to 3.6.1 FXS for detailed instructions.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 12
Step 9: Enable the DND (do not disturb) feature. (Skip this step if not necessary.)
Go to the Port Settings interface to enable the DND feature. Then, the FXS port will reject all
incoming calls. Refer to 3.6.1 FXS for detailed instructions.
Step 10: Enable the call waiting feature. (Skip this step if not necessary.)
Go to the Port Settings interface to enable the call waiting feature. Then the corresponding FXS
port while in conversation can accept another call from IP and keep it in the waiting state. Once
the current conversation is finished and the station hangs up, the call in the waiting state will ring
the station and wait for answer. During the time in the waiting state, it will always hear the ringback
tone from the FXS port. Refer to 3.6.1 FXS for detailed instructions.
Step 11: Perform call forwarding. (Skip this step if not necessary.)
Situation 1: Hook-flash operation
Figure 2-3 Call Forward via Hook-flash
As shown above, Remote A initiates and establishes a call with Station. Then by a hook-flash
operation, that is, a rapid clap on the hook or pressing the ‘flash’ button on the phone set, Station
can forward the call to Remote B.
Once a flash is generated, Station will go into the dialing state (the FXS port sends it dialing tones)
before it dials the forwarding number.
If the dialing succeeds, the FXS port will send ringback tones to Station. Provided Remote B picks
up the call, at this time Station can:
a) Directly talk with Remote B;
b) Perform another hook-flash operation to switch the call to either Remote A or Remote B.
c) Hang up to make Remote A and Remote B go into a direct talk with each other.
If the dialing fails, the FXS port will send busy tones to Station.At this time Station can:
a) Hang up to go back to the ringing state; then pick up the call again to recover the talk
with Remote A.
b) Perform the hook-flash operation again without hanging up the call to recover the talk
with Remote A.
Once Station recovers the call with Remote A, it can forward the call again by a new hook-flash
operation.
Situation 2: Automatic call forward
Go to the port setting interface to enable the automatic call forward feature and fill in a forward
number. According to what you set, the SMG-B analog gateway can automatically forward the
incoming calls on three conditions: unconditional, busy, no reply. Note that this feature is
applicable only to a single port, but not to a port group consisting of more than one port. Refer to
3.6.1 FXS for detailed instructions.
Special Instructions:

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 13
As the device will gradually heat up while being used, please maintain good ventilation to
prevent sudden failure, ensuring that the ventilation holes are never jammed.
During runtime, if the alarm indicator lights up or flashes, it indicates that the device goes
abnormal. If you cannot figure out and solve the problem by yourself, please contact our
technicians for help. Otherwise it may lead to a drop in performance or unexpected
errors.

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 14
Chapter 3 WEB Configuration
3.1 System Login
Type the IP address into the browser and enter the login interface. See Figure 3-1.
Figure 3-1 Login Interface
The gateway only serves one user, whose original username and password are both ‘admin’. You
can change the username and the password via ‘System Tools Change Password’ on the WEB
interface. For detailed instructions, refer to 3.9.15 Change Password.
After login, you can see the main interface as below.
Figure 3-2 Main Interface

Synway Information Engineering Co., Ltd
SMG-B Series Analog Gateway User Manual (Version 1.6.4) Page 15
3.2 Operation Info
Operation Info includes four parts: System Info, Channel State, Call Count and SIP Message
Count, showing the current running status of the gateway. See Figure 3-3.
Figure 3-3 Operation Info
3.2.1 System Info
Figure 3-4 System Info Interface
See Figure 3-4 for the system info interface. You can click Refresh to obtain the latest system
information. The table below explains the items shown in Figure 3-4.
Item Description
MAC Address MAC address of LAN.
IP Address The three parameters from left to right are IP address, subnet mask and default
gateway of LAN.
DNS Server DNS server address of LAN.
Receive Packets The amount of receive packets after the gateway’s startup, including three options: