Synway SBC Series User manual

Synway SBC Series Gateway
SBC500
Version 1.8.0
Synway Information Engineering Co., Ltd
www.synway.net

Synway Information Engineering Co., Ltd
SBC Series Gateway User Manual (Version 1.8.0) Page i
Content
Content .................................................................................................................................................. i
Copyright Declaration.......................................................................................................................... iii
Revision History ...................................................................................................................................iv
Chapter 1 Product Introduction ......................................................................................................... 1
1.1 Typical Application ................................................................................................................... 1
1.2 Feature List .............................................................................................................................. 1
1.3 Hardware Description .............................................................................................................. 2
1.4 Alarm Info................................................................................................................................. 4
Chapter 2 Quick Guide ........................................................................................................................ 5
Chapter 3 WEB Configuration ............................................................................................................ 7
3.1 System Login ........................................................................................................................... 7
3.2 Operation Info .......................................................................................................................... 7
3.2.1 System Info ...................................................................................................................... 7
3.2.2 IP Status ........................................................................................................................... 9
3.2.3 Call Monitor ....................................................................................................................10
3.2.4 Client Info ....................................................................................................................... 11
3.2.5 Client Status ................................................................................................................... 11
3.2.6 Call Count....................................................................................................................... 11
3.2.7 SIP Account Call Count ..................................................................................................12
3.2.8 Warning Info ...................................................................................................................12
3.3 SIP Settings ........................................................................................................................... 12
3.3.1 SIP..................................................................................................................................12
3.3.2 Hot Backup (HA) ............................................................................................................ 16
3.3.3 SIP Trunk ........................................................................................................................16
3.3.4 SIP Register ................................................................................................................... 19
3.3.5 SIP Account ....................................................................................................................19
3.3.6 SIP Trunk Group ............................................................................................................. 20
3.3.7 Media Settings................................................................................................................21
3.4 Fax Settings ...........................................................................................................................23
3.4.1 Fax..................................................................................................................................23
3.5 Route Settings ....................................................................................................................... 24
3.5.1 Routing Parameters ....................................................................................................... 24
3.5.2 IP to IP............................................................................................................................25
3.6 Number Filter .........................................................................................................................26
3.6.1 Whitelist .......................................................................................................................... 26
3.6.2 Blacklist .......................................................................................................................... 27
3.6.3 Number Pool .................................................................................................................. 27
3.6.4 Filtering Rule ..................................................................................................................27
3.7 Number Manipulation............................................................................................................. 28
3.7.1 IP to IP CallerID .............................................................................................................. 28
3.7.2 IP to IP CalleeID .............................................................................................................29
3.7.3 CallerIP Pool................................................................................................................... 30
3.8 VPN........................................................................................................................................31
3.8.1 VPN Server Settings ......................................................................................................31
3.8.2 VPN Account ..................................................................................................................31
3.9 DHCP .....................................................................................................................................32
3.10 System Tools.......................................................................................................................... 32
3.10.1 Network .......................................................................................................................... 32
3.10.2 Authorization .................................................................................................................. 32
3.10.3 Management .................................................................................................................. 33

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3.10.4 IP Routing Table .............................................................................................................34
3.10.5 Firewall ........................................................................................................................... 34
3.10.6 IDS Settings ................................................................................................................... 35
3.10.7 DDOS Settings ...............................................................................................................35
3.10.8 Certificate Management ................................................................................................. 36
3.10.9 Centralized Manage ....................................................................................................... 36
3.10.10 SIP Account Generator............................................................................................... 37
3.10.11 Recording Manage ..................................................................................................... 38
3.10.12 Configuration File .......................................................................................................38
3.10.13 Signaling Capture ....................................................................................................... 38
3.10.14 Signaling Call Test ......................................................................................................39
3.10.15 Signaling Call Track .................................................................................................... 39
3.10.16 Network Speed Tester ................................................................................................40
3.10.17 PING Test ...................................................................................................................40
3.10.18 TRACERT Test ...........................................................................................................41
3.10.19 Modification Record....................................................................................................41
3.10.20 Backup & Upload........................................................................................................41
3.10.21 Factory Reset .............................................................................................................41
3.10.22 Upgrade ...................................................................................................................... 41
3.10.23 Account Manage......................................................................................................... 41
3.10.24 Change Password ...................................................................................................... 43
3.10.25 Device Lock ................................................................................................................43
3.10.26 Restart ........................................................................................................................43
Chapter 4 Typical Applications ........................................................................................................ 44
Appendix A Technical Specifications................................................................................................ 46
Appendix B Troubleshooting ............................................................................................................. 47
Appendix C Technical/sales Support ................................................................................................ 48

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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.

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Revision History
Version
Date
Comments
Version 1.7.0
2018.6
Initial publication
Version 1.8.0
2019.12
New revision
Note: Please visit our website http://www.synway.net to obtain the latest version of this document.

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SBC Series Gateway User Manual (Version 1.8.0) Page 1
Chapter 1 Product Introduction
Thank you for choosing Synway SBC Series Gateway Products!
The Synway SBC series gateway products (hereinafter referred to as „SBC gateway‟) are mainly
used for connecting the IP telephony network or IP PBX, providing such features as transcoding,
routing, number filtering, number conversion, etc. At present, the SBC series gateway products
mainly include the model SBC500.
1.1 Typical Application
Figure 1-1 SBC Typical Application
1.2 Feature List
Basic Features
Description
IP Call
Call initiated from IP to a designated SIP trunk, via routing and number
manipulation.
Number Manipulation
Peels off some digits of a phone number from left/right, or adds a prefix/suffix to a
phone number.
VoIP Routing
Routing path: from IP to IP.
Signaling & Protocol
Description
SIP Signaling
Supported protocol: SIP V1.0/2.0, RFC3261

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Voice
CODEC
G.711A, G.711U, G.729, G722, G723, iLBC, AMR-NB,
SILK(16K), OPUS(16K), SILK(8K), OPUS(8K)
DTMF Mode
RFC2833, SIP INFO, INBAND, RFC2833+Signaling,
In-band+Signaling
Network
Description
Network Protocol
Supported protocol: TCP/UDP, HTTP, ARP/RARP, DNS, NTP, TFTP, TELNET,
STUN
Static IP
IP address modification support
DNS
Domain Name Service support
Firewall
Firewall setting support
SIP Encryption
SIP TLS encryption support
RTP Encryption
RTP encryption protocol SRTP support
DOS/DDOS Protection
Defense from DOS/DDOS attack
PPPoE
PPPoE support
IPV4/IPV6
IPV4 and IPV6 support
Security
Description
Admin Authentication
Support admin authentication to guarantee the resource and data security
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
1.3 Hardware Description
The SBC gateway features 1U rackmount design and integrates embedded LINUX system within
the POWERPC+DSP hardware architecture. It has 2 Kilomega-Ethernet ports (LAN1 and LAN2)
on the chassis.
See the figures below for SBC500 series‟ appearance:

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Figure 1-2 Front View
Figure 1-3 Rear View
Figure 1-4 Left View
The table below gives a detailed introduction to the interfaces, buttons and LEDs illustrated
above:
Interface
Description
LAN
Amount: 2
Type: RJ-45
Bandwidth: 10/100/1000Mbps
Self-Adaptive Bandwidth Supported
Auto MDI/MDIX Supported
Console Port
Amount: 1
Type: RS-232
Baud Rate: 115200 bps
Connector: RJ45 (See Figure 1-5 for signal definition)
Data Bits: 8 bits
Stop Bit: 1 bit
Parity Unsupported
Flow Control Unsupported
Button
Description
Power Key
Power on/off the SBC gateway. You can turn on the two power keys at the same
time to have the power supply working in the hot-backup mode.
LAN1 Indicator
Alarm Indicator
Power 1 Indicator
LAN2 Indicator
Console Port
Run Indicator
Power 2 Indicator
Reset Button
Ventilation Holes Screw Holes for Foot Bracket
Power 1 Key
220V AC Power 1
Power 2 Key
LAN
Grounding Stud
220V AC Power 2

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Reset Button
Restore the gateway to factory settings.
LED
Description
Power Indicator
Indicates the power state. It lights up when the gateway starts up with the power
cord well connected.
Run Indicator
Indicates the running status. For more details, refer to Alarm Info.
Alarm Indicator
Alarms the device malfunction. For more details, refer to Alarm Info.
Link Indicator
The green LED on the left of LAN, indicating the network connection status.
ACT Indicator
The orange LED on the right of LAN, whose flashing tells data are being
transmitted.
Note: The console port is used for debugging. While connection, the transmitting and receiving
lines of the gateway and the remote device should be cross-linked. That is, connect the
transmitting line of the gateway to the receiving line of the remote device, and vice verse. The
figure below illustrates the signal definition of the console port on the gateway.
Figure 1-5 Console Port Signal Definition
For other hardware parameters, refer to Appendix A Technical Specifications.
1.4 Alarm Info
The SBC gateway is equipped with two indicators denoting the system‟s running status: Run
Indicator (green) and Alarm Indicator (red). The table below explains the states and meanings of
the two indicators.
LED
State
Description
Run Indicator
Go out
System is not yet started.
Light up
System is starting.
Flash
Device is running normally.
Alarm Indicator
Go out
Device is working normally.
Light up
Upon startup: Device is running normally.
In runtime: Device goes abnormal.
Flash
System is abnormal.
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, both the run
indicator and the alarm indicator light up. Then after the gateway service is successfully
started and the device begins to work normally, the run indicator flashes and the alarm
indicator goes out.
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. Go to Appendix C Technical/sales Support to find the contact way.
8
7
6
5
4
3
2
1
GND
Gateway TX
Gateway RX

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Chapter 2 Quick Guide
This chapter is intended to help you grasp the basic operations of the SBC gateway in the
shortest time.
Step 1: Confirm that your packing box contains all the following things.
SBC Series Gateway *1
Angle Bracket *2, Rubber Foot Pad *4, Screw for Angle Bracket *8
220V Power Cord *2
Warranty Card *1
Installation Manual *1
Step 2: Properly fix the SBC gateway.
If you do not need to place the gateway on the rack, simply fix the 4 rubber foot pads. Otherwise,
you should first fix the angle brackets onto the chassis and then place the chassis on the rack.
Step 3: Connect the power cord.
Make sure the device is well grounded before you connect the power cord. Check if the power
socket has the ground wire. If it doesn‟t, use the grounding stud on the rear panel of the device
(See Figure 1-3) for earthing.
Note: Each SBC gateway has two power interfaces to meet the requirement for power supply hot
backup. As long as you properly connect and turn on these two power keys, either power supply
can guarantee the normal operation of the gateway even if the other fails.
Step 4: Connect the network cable.
Step 5: Log in the gateway.
Enter the original IP address (LAN 1: 192.168.1.101 or LAN 2: 192.168.0.101) of the SBC
gateway in the browser to go to the WEB interface. The original username and password of the
gateway are both „admin‟. For detailed instructions about login, refer to 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 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 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: Check the IP status.
After the configuration of signaling protocols, you can check the channel state via „Operation Info
IP Status‟. Refer to IP Status for detailed introductions.
Step 8: Set routing rules for calls.
Note: For your easy understanding and manipulation, all examples given in this step do not
involve registration.
Step 1: Configure the IP address of the remote SIP terminal which can establish conversations
with the gateway so that the calls from other terminals will be ignored. Refer to „SIP
Settings SIP Trunk‟for detailed instructions. Fill in „Remote IP‟and „Remote Port‟with

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the IP address and port of the remote SIP terminal which will initiate calls to the gateway.
You may use the default values for the other configuration items.
Example: Provided the IP address of the SIP trunk which calls in is 192.168.0.111 and
the port is 5060. Add SIP Trunk 0; set Remote IP to 192.168.0.111 and Remote Port to
5060. Provided the IP address of the SIP trunk which calls out is 192.168.0.222 and the
port is 5060. Add SIP Trunk 1; set Remote IP to 192.168.0.222 and Remote Port to
5060.
Step 2: Add the SIP trunk configured in Step 1 into the corresponding SIP trunk group. Refer to
„SIP Settings SIP Trunk Group‟for detailed instructions. Select the SIP trunk
configured in Step 1 as „SIP Trunks‟. You may use the default values for the other
configuration items.
Example: Add SIP Trunk Group 0. Check the checkbox before 0for SIP Trunks and
keep the default values for the other configuration items; add SIP Trunk Group 1. Check
the checkbox before 1for SIP Trunks and keep the default values for the other
configuration items.
Step 3: Add routing rules. Refer to „Route Settings IPIP‟for detailed instructions. Select SIP
Trunk Group[0] set in Step 2 as „Call Initiator‟and SIP Trunk Group[1] set in Step 3 as
„Call Destination‟. You may use the default values for the other configuration items.
Example: Select SIP Trunk Group[0] as Call Initiator and SIP Trunk Group[1] as Call
Destination. Keep the default values for the other configuration items.
Step 4: Initiate a call from SIP Trunk 0 configured in Step 1 to the IP address and port of the SBC
gateway. Thus you can establish a call conversation via SIP Trunk 1 with the IP terminal.
(Note: The format used for calling an IP address via SIP trunk is as follows:
username@IP address.)
Example: Provided the IP address of the SBC gateway is 192.168.0.101 and the port is
5060. Provided 123 is a number which conforms to the number receiving rule of the
remote device. Initiate a call from SIP Trunk 0 to the IP address 192.168.0.101 (in the
format: 123@192.168.0.101) and you can establish a call conversation via SIP Trunk 1
to the number 123.
Special Instructions:
The chassis of the SBC gateway must be grounded for safety reasons, according to
standard industry requirements. A simple way is earthing with the third pin on the plug or
the grounding studs on the machine. No or improper grounding may cause instability in
operation as well as decrease in lightning resistance.
As the device will gradually heat up while being used, please maintain good ventilation to
prevent sudden failure, ensuring that the ventilation holes (see Figure 1-4) 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.

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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 Change Password.
After login, you can see the main interface.
3.2 Operation Info
Operation Info includes the following parts: System Info, IP Status, Call Monitor, Register
Status,Client Info,Client Status, Call Count, SIP Account Call Count and Warning Info,
showing the current running status of the gateway.
3.2.1 System Info
On the System Info interface, you can click Refresh to obtain the latest system information. See
below for details.
Item
Description
MAC Address
MAC address of LAN 1 or LAN 2.
IP Address
The three parameters from left to right are IP address, subnet mask and default
gateway of LAN 1 or LAN 2.
IPV6 Address
The two parameters from left to right are IPV6 address and IPV6 address prefix
of LAN 1 or LAN 2.
DNS Server
DNS server address of LAN 1 or LAN 2.
Receive/Transmit
Packets
The amount of receive/transmit packets after the gateway‟s startup, including
three categories: All, Error and Drop.

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Current Speed
The current speed of data receiving and transmitting.
Work Mode
The work mode of the network, including six options: 10 Mbps Half Duplex, 10
Mbps Full Duplex, 100 Mbps Half Duplex, 100 Mbps Full Duplex, 1000 Mbps Full
Duplex and Disconnected.
Network Type
The type of the network, including three options: Static, DHCP and PPPoE.
Runtime
Time of the gateway keeping running normally after startup. This parameter
updates every 2s.
CPU Temperature
Display the real time temperature of the CPU.
CPU Usage Rate
Display the real time usage rate of the CPU.
Current RTP
Message Data
Display the receiving and sending information of the current RTP data.
HA State
The dual-system hot backup state in the Call Status Agent mode, including
Primary, Backup, and Independent. The original configuration state and
heartbeat network port are indicated in parentheses.
DCMS Working Status
Display the connecting status of the gateway and DCMS.
Recording Work
Status
Display the working status of the recording server docked by the gateway.
Authorization Status
Display the features of the SBC device, which requires authorization.
Authorization
Numbers
Display the number of authorized devices.
Remaining Time
Display the remaining time after successful authorization.
Serial Number
Unique serial number of an SBC gateway.
WEB
Current version of the WEB interface.
Gateway
Current version of the gateway service.
Uboot
Current version of Uboot.
Kernel
Current version of the system kernel on the gateway.
Firmware
Current version of the firmware on the gateway.

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3.2.2 IP Status
Figure 3-2 IP Status Interface
See Figure 3-2 for the IP status interface which shows the real-time status of each IP channel on
the gateway. Note that this interface is unavailable when SIP Working Mode on the SIP Settings
interface is set to Call Status Agent. See below for details.
Item
Description
Channel No.
Number of the IP channel on the device.
Status
Displays the channel state in real time. You can move the mouse onto the channel
state icon for detailed information about the channel and the call, such as: call
direction, calling party number and called party number. The channel states include:
State
Icon
Description
Idle
The channel is available.
Wait Answer
The channel receives the ringback tone and is waiting
for the called party to pick up the phone.
Ringing
The channel is in the ringing state.
Talking
The channel is in a conversation.
Pending
The channel is in the pending state
Dialing
The channel is dialing.
Wait Message
The channel is waiting for the message from remote
end.
Note: The gateway provides the fuzzy search feature on this interface. After you click any
characters on Figure 3-2, and press the „F‟button, the search box will emerge on the right top of
this page. Then you can input the key characters and the gateway will locate the channel on
which there is an ongoing call that conforms to the fuzzy search condition.
Take an example: As shown in Figure 3-3, after we input the character 111 to the search box, and
click the Search button, the gateway does a fuzzy search and locates that the ongoing call whose
CalledID contains the character 111 occurs on Channel 12 and Channel 13 of Channel Group 0.

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Figure 3-3 Search Calls
3.2.3 Call Monitor
On the Call Monitor interface, you can set a condition for call monitoring. For example, set the
CalleeID 111 as the monitoring condition, and after you click the Setbutton, all the calls containing
the CalleeID 111 will display in the Call Info list. The table below explains the items on this
interface.
Item
Description
Monitored CallerID,
Monitored CalleeID,
Monitored Remote
Address
Sets the condition for the call monitoring. You can set to monitor the calls by
CallerID, CalleeID or remote address.
Monitoring LAN Port
Selects the LAN port which is used to monitor the calls.
Channel No.
The number of the channel, which starts from 0.
Call Direction
The direction of the monitored call, including two options: IPPSTN and
PSTNIP.
Remote Address
The remote address of the monitored call.
Channel Status
The status of the channel which the monitored call locates at.
CallerID
The CallerID of the monitored call.
CalleeID
The CalleeID of the monitored call.
Start Time
The start time of the monitored call.
Duration
The duration of the monitored call.
Click the icon in the channel status column, and you can monitor the call in real-time. If your
computer is not installed with RemoteListener, click the icon and you will see a prompt asking you
to set the security level. Follow the instructions to configure the IE explorer: Open it and
click 'Tools > Internet Options >Security Tab'; then click 'Custom Level' and enable 'Initialize and
script ActiveX controls not marked as safe for scripting'. If there is a shadow showing under the
icon, such as „ ‟, it means the monitoring goes successful. Click the icon again to cancel
the monitoring.

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Note:
1. If a channel has been monitored from the very beginning, the monitoring, even if not yet
cancelled, will terminate once the channel is removed from the monitor list.
2. This interface is unavailable when SIP Working Mode on the SIP Settings interface is set to
Call Status Agent.
3.2.4 Client Info
The Client List is only supported in the Call Status Agent mode. It displays the IMS accounts
added by all customers. You can query by client name. See the figure below.
Figure 3-4 Client List Interface
3.2.5 Client Status
The Client Status interface displays the name of the encrypted client registered to the IMS server
via the SBC server and its online status.
3.2.6 Call Count
The Call Count interface lists the detailed information about all the calls counted from the startup
of the gateway service to the latest open or refresh of this interface. You can click Reset to count
the call information again, and click Download to download all the call logs. The table below
explains the items on this interface.
Item
Description
SIP Index
The index of the SIP trunk.
Description
More information about each SIP trunk group.
SIP Trunk Address
Address of the SIP trunk, i.e. the IP address or domain name of the remote SIP
terminal which will establish a call conversation with the gateway.
Current
The number of the current incoming/outgoing SIP calls.
Sum
The total number of the incoming/outgoing SIP calls.
Connection Rate
The percentage of successful calls to total calls by all method. The call methods
include incoming/outgoing SIP calls.
Answering Rate
The percentage of answered calls to total calls by all methods. The call methods
include incoming/outgoing SIP calls.
Average Call Length
The average call length for all connected calls.
INVITE
The number of the invite messages received per second.
Release Cause
Reason to release the call.
Normal
Disconnection
Total number of the calls which are normally cleared. The corresponding SIP status
code is 200.
Cancelled
Total number of the calls which are cancelled by the calling party. The
corresponding SIP status code is 487.

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Busy
Total number of the calls which fail as the called party has been occupied and
replies a busy message. The corresponding SIP status code is 603.
No Answer
Total number of the calls which fail as the called party does not pick up the call in a
long time or the calling party hangs up the call before the called party picks it up.
The corresponding SIP status code is 403.
Routing Failed
Total number of the calls which fail because no routing rules are matched. The
corresponding SIP status code is 488.
No Idle Resource
Total number of the calls which fail because no voice channel is available. The
corresponding SIP status code is 486.
Failed
Total number of the calls which fail as the called party number does not conform to
the number-receiving rule or for relative reasons. The corresponding SIP status
code is 4xx, 5xx or 6xx.
Others
Total number of the calls which fail due to other unknown reasons. The
corresponding SIP status code is 493.
Percentage
The percentage of the calls with a release cause to total calls.
Current Number of
SIP Call in/out
The number of calls currently coming in to/out from the SIP.
Connected Number
of SIP Call in/out
The number of successfully connected calls coming in to/going out from the SIP.
Total Number of SIP
Call in/out
The sum of all calls coming in to/going out from the SIP.
Connection Rate of
SIP Call in/out
The percentage of the number of successful SIP incoming/outgoing calls to the total
number of incoming/outgoing calls.
CPS
The number of new calls per second.
3.2.7 SIP Account Call Count
SIP Call Count supports the statistics on the total number of calls, the connection rate and the
response rate for each SIP account (only in the sbo-> ims direction), as well as the sort in
sequence and reset. It synchronizes the SIP accounts that are added, deleted, or changed.
3.2.8 Warning Info
The Warning Information interface displays all the warning information on the gateway.
3.3 SIP Settings
SIP Settings includes six parts: SIP, SIP Trunk, SIP Register, SIP Account, SIP Trunk Group
and Media. SIP is used to configure the general SIP parameters; SIP Trunk is used to set the
basic and register information of the SIP trunk; SIP Register is used for the registration of SIP;
SIP Account is used for registering SIP accounts to the SIP server; SIP Trunk Group is to
manage SIP trunks by group; and Media is to set the RTP port and the payload type.
3.3.1 SIP
On the SIP Settings interface, you can configure the general SIP parameters. After configuration,
click Save to save your settings into the gateway or click Reset to restore the configurations. If a

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dialog box pops up after you save your settings asking you to restart the service, do it immediately
to apply the changes. Refer to Restart for detailed instructions. The table below explains the items
on this interface.
Item
Description
SIP Address of WAN
IP address of WAN for SIP signaling, using LAN 1 by default.
SIP Working Mode
Set the working mode of SIP, including Back-to-back User Agent and Call Status
Agent.
RTP Transcoding
When this feature is enabled, RTP will be transcoded by OCT after negotiation.
This feature is disabled by default.
SIP Signaling Port
The port monitored by SIP UDP/TCP. The value range is 2000-65535 and the
default value is 5060.
Note: It cannot overlap with the RTP port range in the media settings.
SIP TLS Signaling
Port
The port monitored by SIP TLS. The value range is 2000-65535 and the default
value is 5061.
Note: It cannot overlap with the RTP port range in the media settings.
Obtain CallerID from
There are four optional ways to obtain the calling party number: Username of
“From”Field, Displayname of “From”Field, P-Preferred-Identity Field,
P-Asserted-Identity Field. The default value is Username of “From”Field.
Obtain/Send CalleeID
from
There are two optional ways to obtain or send the called party number: from “To ”
Field or from “Request”Field. The default value is from “Request”Field.
Prack Send Mode
Sets whether to return the pack message while receiving the 180/183 message
which carries the 100rel field. Three options are available: Disable, Supported and
Require, and the default setting is Disable.
DisplayName
Sets whether to carry the actual calling number in the DisplayName field of the
SIP message sent by the gateway.
UserName
Sets whether to carry the gateway registered number in the UserName field of the
SIP message.
NAT Traversal,
Traversal Type
Sets whether to enable the feature of NAT Traversal. By default, the feature is
disabled. There is only one optional traversal type: Port Mapping.
LAN1 Mapping
Address, LAN2
Mapping Address
The mapping address of the LAN1 and LAN2 in case the NAT traversal is
enabled. If the port mapping is selected as the traversal type, you are required to
set the mapping address on the router and fill in the corresponding information
here as well. By default, only the IP address need be filled in, and the port value is
just the same as the SIP signaling port.
Always Use Mapping
Address
Once this feature is enabled, the gateway will be enforced to use the mapping
address set in the above configuration item to initiate calls. By default it is
disabled.
RTP Self-adaption
When this feature is enabled, the RTP reception address or port carried by the
signaling message from the remote end, if not consistent with the actual state, will
be updated to the actual RTP reception address or port. By default, this feature is
disabled.
UDP Header
Checksum
When this feature is enabled, the gateway will automatically calculate the check
sum of the UDP header during RTP transmission.

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SBC Series Gateway User Manual (Version 1.8.0) Page 14
Rport
When this feature is enabled, a corresponding Rport field will be added to the Via
message of SIP. By default, it is disabled.
Auto Reply of Source
Address
Once this feature is enabled, the gateway will reply the source address in the
invite message. The default value is disabled.
Multiple Audio
Selection
Since the SDP message carries multiple audio types, you can choose RTP or
SRTP as the voice port.
Send Response by
Former Via
Enabling this feature means to close the automatic modification on the Via header
of the response message. By default it is disabled.
Registration Related
Settings
When this feature is enabled, the available call time for each SIP registered
account as well as the SIP Registered Number Polling feature can be set. By
default it is disabled.
Time (min/month)
Specifies the call time for a SIP registered account.
SIP Registered
Number Polling
When this feature is enabled, the call is polled among SIP registered accounts. By
default it is disabled.
Failed Count
It is valid only when the feature SIP Registered Number Polling is enabled. After a
number is called out and fails for set times, it will be kicked out of the cycle and
then allowed to re-join after Recover Time of Disable Account.
Recover Time of
Disable Account (m)
See the description of Failed Count.
Caller Prefix Grouping
When this feature is enabled, only if the calling number of the call matches the
caller prefix on the page of the SIP registered account will the rated time be used.
Caller over Clocking
(IP OUT)
Limit on the number of calls in a cycle for the calling number. By default this
feature is disabled.
Cycle (min)
The time of a cycle. It is only valid when the feature Caller over Clocking is
enabled.
Count Values
The allowed incoming calls within the set time of a cycle. It is only valid when the
feature Caller over Clocking is enabled.
Interval (ms)
The interval time for calls from a same calling number. After hangup, the gateway
needs to wait for some time before using this account. It is only valid when the
feature Caller over Clocking is enabled.
SIP Value of Reply
The abnormal SIP message returned by the gateway. The default value is 503.
Deny SIP Calls when
Registration Fails
Unregistered and registration failed SIP accounts as well as the invite message
over IP reply 503 for rejection, It is disabled by default.
Eth Resource
The limit on the RTP resources occupied simultaneously by a single network port.
It can be configured in the SIP settings. By default it is disabled.
Eth Resource Num
The number of network port resources is an integer greater than 0. The default
value is 2.
SIP Account Numbers
The maximum number of SIP accounts, must be set greater than the number of
existing SIP accounts. The default value is 2000.
SIP Account
Registration Interval
The interval between registrations of multiple SIP accounts. Range of value:
0~10000, with the default value of 0.

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SBC Series Gateway User Manual (Version 1.8.0) Page 15
DSCP
Sets whether to enable the DSCP differentiated services code point. By default, it
is disabled.
Voice Media
Sets the priority of the voice media for DSCP. The voice media with a bigger value
has a higher priority. The value range is 0~63, with the default value of 46.
Signal Control
Sets the priority of the signal control for DSCP. The signal control with a bigger
value has a higher priority. The value range is 0~63, with the default value of 26.
Calls from SIP Trunk
Address only
Once this feature is enabled, the gateway will only accept the calls from the IP
addresses set in SIP Settings SIP Trunk. By default, it is disabled. And it is only
valid when the Firewall feature is not enabled.
Match Call Count to
SIP Trunk based on
Source Address of
INVITE
Performs call count by matching the source address of the INVITE message. By
default it is disabled.
Switch Signal Port if
SIP Registration
Failed
If the SIP registration fails, the SIP signaling port N will switch to N+1 for a new
registration. It will continue until the registration succeeds. By default, it is
disabled.
Hang up upon Call
Time-out
Sets whether to enable the feature to hang up the call once it is time-out, with the
default value of No.
Maximum Call
Overtime
Sets the maximum overtime for a call. Calculated by minute.
Working Period,
Period
The work period for the gateway, You can specify a certain period for the gateway
to make calls. By default, the gateway is allowed to make calls any time in the day
(24 Hours).
Sip Trunk Heart
Sets whether to send the option message to the SIP trunk. The calls routed to this
trunk will be rejected directly if the times of no answer from the MGCF trunk
exceed the set value.
Trunk Heartbeat Cycle
The cycle to send the option message to the SIP trunk.
Allowed Times of
NoResponse
The allowed times of SIP‟s no answer to the option message.
Return Value from SIP
upon No Response
The SIP trunk did not reply with the SIP value returned by the option message.
The default value is 502.
Support 100rel
Sets whether to carry 100rel in the Supported field of the request message for IP
calls out. By default it is disabled.
Not Wait ACK after
Sending 200 OK
Once this feature is enabled, the gateway does not need to wait the ACK
message after sending the 200OK message. The default value is disabled.
Minimum Registration
Interval
Used to set the minimum period for registering messages when SIP Working
Mode is set to Back-to-back User Agent. The default value is 60.
The Percentage of
Registration Message
Sending Cycle to
Period of Validity
Sets the percentage of the sending cycle of the SIP registration message to the
validity period. Value of range: 1~200, with the default value of 70.