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4 Functions and Features .............................................................................................................. 12
4.1 Voice Features ................................................................................................................................................ 12
4.2 Data Features .................................................................................................................................................. 16
This topic describes the product positioning and highlights of the eSpace EGW1500E.
1.1 Product Positioning
Huawei eSpace EGW1500 series are multi-service access gateways that integrate applications
such as voice, data, and broadband connections and provide a complete access solution. It is
an optimal choice for Small Office Home Office (SOHO) users and small enterprises to
establish an integrated office network.
1.2 Highlights
This topic describes the product highlights of the EGW1500E. Providing various services and
ports, the EGW1500E features cost-effectiveness, high reliability and security, easy
deployment, and simplified maintenance.
1.1 Product Positioning
Huawei eSpace EGW1500 series are multi-service access gateways that integrate applications
such as voice, data, and broadband connections and provide a complete access solution. It is
an optimal choice for Small Office Home Office (SOHO) users and small enterprises to
establish an integrated office network.
The eSpace EGW1500 provides multiple uplink ports for networks in different uplink modes.
It also provides user ports to establish flexible office networks.
1.2 Highlights
This topic describes the product highlights of the EGW1500E. Providing various services and
ports, the EGW1500E features cost-effectiveness, high reliability and security, easy
deployment, and simplified maintenance.
The EGW1500E's reliability reaches 99.99%. The mean time between failures (MTBF) is
over 30000 hours, and the mean time to repair (MTTR) is less than 30 minutes.
The EGW1500E provides various mechanisms such as dual-homing, power-off survival, local
survival, 3G connection, and QoS to ensure the reliability, and uses advanced technologies
such as VPN, URL filtering, NAT, and DMZ to enhance network security.
Multi-Service Integration
The EGW1500E integrates various functions such as broadband access, voice, routing,
security, wireless network, firewall, voice mail and VPN. Multiple services can be deployed
on the same node, which significantly reduces the initial investment and long-term
maintenance costs of the enterprise network. The EGW1500E uses an advanced hardware
platform and software architecture to provide users with an integrated network solution with a
minimum investment.
Various Ports
The EGW1500E provides various uplink ports for different networking scenarios, including
WAN, ADSL, USB, and FXO ports. The EGW1500E also provides diversified user ports such
as Wi-Fi, LAN, and FXS ports to set up flexible office networks.
Easy Installation and Maintenance
The EGW1500E is a box-shaped device that can be placed on a desk or mounted on a wall.
The EGW1500E provides standard external ports that are clearly marked to facilitate
installation and cable connection. The EGW1500E uses standard connection parts and does
not require a dedicated installation tool.
Users can configure the EGW1500E on web pages. The web management system provides
step-by-step configuration guidance for quick installation.
Efficient Remote Maintenance
The EGW1500E ensures the remote access security. Users can access the EGW1500E through
an uplink port (WAN, ADSL, or 3G) to perform remote configuration and maintenance.
The EGW1500E, complying with the TR-069 protocol, connects to the Element Management
System (EMS) server (such as the eSpace EMS) to enable the remote configuration and
aintenance functions, such as software version upgrade, configuration file backup and
restoration, and device status monitoring.
The EGW1500E supports the following application scenarios:
Functions as a gateway to provide the Internet access and small-capacity voice services
for small enterprises or Small Office Home Office (SOHO) users.
Integrates with the eSpace UC solution to provide a comprehensive access solution for
small branches.
2 Application Scenarios
2.1 SOHO Application
The EGW1500E provides a small-capacity solution integrating voice and broadband services
for small enterprises or SOHO users.
2.2 Enterprise Branch Application
The EGW1500E can be integrated with the eSpace UC solution and deployed in small-sized
enterprise branches. As the network ingress, the EGW1500E provides a comprehensive access
solution for enterprise branches.
2.1 SOHO Application
The EGW1500E provides a small-capacity solution integrating voice and broadband services
for small enterprises or SOHO users.
Figure 2-1 shows the application of the EGW1500E in SOHOs.
The EGW1500E supports three uplink access modes: Asymmetric Digital Subscriber Line
(ADSL), Wide Area Network (WAN), and 3G, as shown in Figure 2-1.
The EGW1500E can connect to an IP network through an ADSL or a WAN port. When
neither an ADSL nor a WAN port is available, users can use a USB-based 3G data card to
connect to a 3G network to transmit voice and data streams (excluding fax data).
Voice Application
The EGW1500E supports the IP PBX function. Users can use different terminals (such as
analog phones, fax machines, and IP phones) to connect to the EGW1500E for internal
communication. In addition, the EGW1500E acts as an agent to register users with the IP
Multimedia Subsystem (IMS) or Next Generation Network (NGN) to implement outgoing
calls and provide voice services.
The PHONE1 port supports the power-off survival function. When the EGW1500E
encounters a power failure, the analog phone connected to the PHONE1 port can be
connected to the PSTN through the FXO port. In this way, the call function is still available
even when the EGW1500E is powered off.
The ADSL and WAN connections are two parallel modes, which cannot be used together or back each
other up.
The EGW1500E can be used to set up an enterprise network in LAN or WLAN mode. LAN
users use the EGW1500E to connect to the Internet to use various services. The EGW1500E
also supports various data functions, such as WLAN, DNS, VLAN, Dynamic Host
Configuration Protocol (DHCP), static routing, Quality of Service (QoS), Network Address
Translation (NAT), Virtual Private Network (VPN), URL filtering, Demilitarized Zone (DMZ),
virtual server, and MAC address filtering.
2.2 Enterprise Branch Application
The EGW1500E can be integrated with the eSpace UC solution and deployed in small-sized
enterprise branches. As the network ingress, the EGW1500E provides a comprehensive access
solution for enterprise branches.
Figure 2-2 shows the application of the EGW1500E in enterprise branches.
Figure 2-2 Application of the EGW1500E in enterprise branches
Uplink Modes
The EGW1500E supports three uplink access modes: ADSL, WAN, and 3G, as shown in
Figure 2-2.
The EGW1500E can connect to an IP network through an ADSL or a WAN port. When
neither an ADSL nor a WAN port is available, users can use a USB-based 3G data card to
connect to a 3G network to transmit voice and data streams (excluding fax data).
Users within the enterprise branches are registered with the SIP server on the central node at
the headquarters. The user numbers are allocated and synchronized to the EGW1500E by the
data synchronization server. In the eSpace UC solution, the SIP server on the central node at
the headquarters controls incoming and outgoing calls of enterprise branch users and provides
voice services for these users.
The EGW1500E can function as the local PSTN trunking gateway to process incoming and
outgoing calls for the local PSTN. This helps an enterprise reduce toll call fees.
The PHONE1 port supports the power-off survival function. When the EGW1500E
encounters a power failure, the analog phone connected to the PHONE1 port can be
connected to the PSTN through the FXO port. In this way, the call function is still available
even when the EGW1500E is powered off.
Local Survival
The EGW1500E registers with the active and standby SIP servers at the same time. If the
active and standby SIP servers are both faulty, the EGW1500E switches to the local survival
mode to process intra-office calls as a local server. When the active or standby SIP server is
restored, the EGW1500E exits the local survival mode.
The ADSL and WAN connections are two parallel modes, which cannot be used together or back each
other up.
Data Application
The EGW1500E can be used to set up an enterprise network in LAN or WLAN mode. LAN
users use the EGW1500E to connect to the Internet to use various services. The EGW1500E
also supports various data functions, such as WLAN, DNS, VLAN, DHCP, static routing,
QoS, NAT, VPN, URL filtering, DMZ, virtual server, and MAC address filtering.
Enables the Wi-Fi Protected Setup (WPS)
function if this button is held down for
more than 6 seconds.
NOTE
With the WPS function, the Wi-Fi terminal
starts to authenticate the WPS. If the
authentication lasts for more than 2 minutes,
the function is not enabled.
Enables or disables the WLAN function if
this button is held down for less than 6
seconds.
Indicato
r
Indication
Description
POWER
Indicates the
power status.
Steady on: The EGW1500E is powered on.
Off: The EGW1500E is powered off.
ADSL
Indicates the
ADSL connection
status.
Steady on: The ADSL connection has been established
and activated.
Blinking: The ADSL connection is being activated.
Off: The EGW1500E is powered off or the ADSL
connection has not been established.
INTERN
ET
Indicates the
WAN or 3G
Steady on: The EGW1500E works in routing mode and is
connected to the WAN, but no data is being transmitted.
3.3 Indicators
This topic describes EGW1500E indicators.
Figure 3-4 shows the EGW1500E indicators.
Figure 3-4 EGW1500E indicators
Table 3-2 describes the indicators on the EGW1500E front panel.
With diversified functions and features, the EGW1500E provides users with various voice and
data services.
4.1 Voice Features
4.2 Data Features
4 Functions and Features
The EGW1500E provides various data services to meet requirements of different users.
4.3 QoS
The EGW1500E provides a complete QoS mechanism to ensure that core services are
allocated with sufficient bandwidth.
4.4 Security
The EGW1500E provides various mechanisms to ensure the security of calls and transmitted
data.
4.1 Voice Features
4.1.1 Voice Access
SIP Trunk
The SIP trunk supports the registration mode and static mode.
The EGW1500E supports only the SIP trunk in the registration mode. The SIP trunk sends a
registration message to the SIP server to set up a dynamic link.
After being registered with the IMS or NGN network using the SIP trunk, the EGW1500E
processes internal calls and SIP signaling for outer-office calls.
Common Mode
When functioning as a device on the access layer, the EGW1500E can register with the IMS
or NGN network using the SIP trunk and process SIP signaling. When functioning as a small
IP-PBX device, the EGW1500E provides various functions, such as IP phone registration, call
control, and protocol processing.
A maximum of 20 SIP users can be registered.
The EGW1500E provides four foreign exchange station (FXS) ports, connecting to a
maximum of four POTS users.
The EGW1500E supports a maximum of eight concurrent voice calls made by SIP users
and POTS users. The maximum number of POTS calls varies according to codec
standard:
− Four concurrent POTS calls for G.711 and G.729
− Two concurrent POTS calls for G.726 and G.722
The EGW1500E voice services comply with the following standards:
G.711A, G.711u, G.729, G.726, and G.722
SIP (RFC 3261-3265)
SIP Session Timers (RFC 4028)
SDP (RFC 2327)
RTP/RTCP
RFC2833
UC Mode
In UC mode, the EGW1500E can be registered with multiple SIP servers at the same time.
Phones connecting to the EGW1500E are registered with the SIP server on the central node at
the headquarters. All calls are processed by the SIP server at the headquarters.
When the EGW1500E is disconnected from the active and standby SIP servers, the
EGW1500E automatically enters the local survival mode and functions as the local SIP server
to implement internal user registration and process all calls.
The EGW1500E can function as the local PSTN trunking gateway to process incoming and
outgoing calls for the local PSTN. This helps an enterprise reduce toll call fees.
Connecting to the PSTN Network
The EGW1500E provides one FXO port used to connect to the PSTN. An intra-office user
dials the outgoing prefix and an inter-office user's number to make an outgoing call through
the FXO port. An inter-office user dials the number that the PSTN carrier allocates to the
FXO port to make an incoming call. The EGW1500E supports the switchboard and private
line functions. By default, the switchboard function is enabled.
The EGW1500E supports one FXO port.
The FXO port supports only the one-stage dialing mode.
Only one call can be made through the FXO port at a time.
4.1.2 Voice Services
This topic describes voice services supported by the EGW1500E. Table 4-1 lists the voice
services.
This topic describes voice QoS policies supported by the EGW1500E.
VAD
Voice activity detection (VAD) is a technology used in speech coding and speech recognition
where the presence or absence of human speech is detected. The VAD avoids unnecessary
coding and transmission of silence packets in Voice over Internet Protocol (VoIP) applications,
saving computation and network bandwidth.
CNG
Comfort noise generator (CNG) is used with VAD. When the VAD function is enabled and no
packets are sent during the silent period, the listener may think that the call has disconnected.
To avoid this, the EGW1500E enables the CNG function on the receiver end. The EGW1500E
CNG technology complies with RFC3389.
EC
Echo cancellation (EC) is a process of removing echo from a voice communication to
improve voice quality on a telephone call. In addition to improving subjective quality, this
process increases the capacity achieved through silence suppression by preventing echo from
traveling across a network. The EGW1500E EC technology complies with ITU-T G.168.
PLC
Packets are often lost on the connectionless IP network as a result of network congestion,
buffer overflow, or bit error. A packet loss compensation (PLC) algorithm is used to minimize
the effects of packet loss. Lost frames can be reconstructed during decoding based on the
voice context, which ensures the quality of the received voice.
Jitter Buffer
When the jitter buffer function is enabled, received packets can be buffered and then retrieved
and processed to remove jitter.
4.1.4 Reliability
The EGW1500E provides various technologies to ensure voice communication reliability.
Multi-SIP Registration–DR Mechanism in a Small Branch
Multi-SIP registration is a disaster recovery (DR) mechanism that ensures service continuity
in emergencies such as SIP server breakdown. Functioning as a voice access device in small
branches, the EGW1500E can register with two SIP servers at the same time. When the active
SIP server is faulty, the EGW1500E switches services to the standby SIP server. When the
active SIP server is restored, the EGW1500E switches services back to the active SIP server.
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