Huawei eSpace 7950 Operating and safety instructions

7950 IP Phone
V200R003C30
Product Overview
Issue
01
Date
2017-07-13
HUAWEI TECHNOLOGIES CO., LTD.

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Copyright © Huawei Technologies Co., Ltd. 2017. All rights reserved.
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Huawei Technologies Co., Ltd.
Address:
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Website:
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7950 IP Phone
Product Overview
Contents
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Contents
1 Product Positioning and Highlights..........................................................................................1
2 Features and Functions ................................................................................................................3
2.1 Multiple Services..........................................................................................................................................................3
2.1.1 Audio Call..................................................................................................................................................................3
2.1.2 Phone Features...........................................................................................................................................................3
2.1.3 Features Available for Specific Network Environments............................................................................................5
2.1.4 Customized Services..................................................................................................................................................9
2.2 High-Fidelity Voice Quality..........................................................................................................................................9
2.3 Superb Network Adaptability .....................................................................................................................................10
2.3.1 Multiple Methods for Obtaining IP Addresses.........................................................................................................10
2.3.2 QoS..........................................................................................................................................................................10
2.4 Quick and Easy Operation..........................................................................................................................................10
2.4.1 Easy Installation.......................................................................................................................................................10
2.4.2 Diversified and Easy-to-Use Function Buttons .......................................................................................................10
2.5 Multiple Auxiliary Ports .............................................................................................................................................11
2.5.1 Headset Port............................................................................................................................................................. 11
2.5.2 USB Port..................................................................................................................................................................11
2.5.3 Bluetooth Port.......................................................................................................................................................... 11
2.5.4 External PC Port ...................................................................................................................................................... 11
2.6 Enhanced Maintainability........................................................................................................................................... 11
2.6.1 Status Query............................................................................................................................................................. 11
2.6.2 Phone Diagnosis ...................................................................................................................................................... 11
2.6.3 Diagnostics .............................................................................................................................................................. 11
2.6.4 Local Upgrade ......................................................................................................................................................... 11
2.6.5 Automatic Upgrade..................................................................................................................................................12
2.6.6 Terminal Management .............................................................................................................................................12
2.7 Reliability ...................................................................................................................................................................12
2.7.1 Multi-Registration....................................................................................................................................................12
2.7.2 eSight Redundancy ..................................................................................................................................................12
2.7.3 Authentication Server Redundancy (Only in EC6.X and IMS+UC)........................................................................12
2.7.4 Directory Server Redundancy (Only in EC6.X and IMS+UC)................................................................................12
2.7.5 NTP Server Redundancy..........................................................................................................................................13

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2.8 Security.......................................................................................................................................................................13
3 Technical Specifications ............................................................................................................14

7950 IP Phone
Product Overview
1 Product Positioning and Highlights
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1 Product Positioning and Highlights
IP Phone 7950 is a full-featured 12-line IP phone with excellent user experience. It provides a
user-friendly UI on a large, true color liquid crystal display (LCD) screen, supports a broad
range of peripherals, and delivers high-quality call services, making it an icon of
new-generation business IP phones.
IP Phone 7950 has the following features:
Twelve lines
5-inch true color Liquid Crystal Display (LCD) screen, 800 x 480 high-resolution
AdvancedAudio Coding-Low Delay (AAC-LD) super-wideband voice codec with a
sample rate as high as 48 kHz
Two GE Ports; support for Power over Ethernet (PoE)
One embedded Bluetooth module
One Universal Serial Bus (USB) port for connecting to standard USB devices, such as a
USB2.0 headset or USB flash drive
Multiple expansion modules
Figure 1-1 shows the appearance of IP Phone 7950.

7950 IP Phone
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Figure 1-1 IPPhone 7950

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2 Features and Functions
2.1 Multiple Services
IP Phone 7950 can work in different network environments, Enterprise Communications
(EC6.X), including Unified Communications (UC2.0, UC2.X), Contact Center (CC), IP
Multimedia Subsystem (IMS), IMS+UC,Asterisk, BroadSoft, and other third-party networks.
In such network environments, IP Phone 7950 provides basic call services and various
supplementary services, helping users improve their work efficiency. This chapter describes
the basic call services, features, service support in different network environments, and
customized services of IP Phone 7950.
This article describes all the following phone features in EC6.X, UC2.X and IMS+UC network
environments. For information about service support of IP Phone 7950 in UC2.0, CC, IMS, Asterisk,
and BroadSoft network environments, see the Specification List of IP Phone 7950.
2.1.1 Audio Call
Working with SIP servers, IP Phone 7950 can communicate with intra-office analog phones,
SIP-based IP phones, Public Switched Telephone Network (PSTN) phones, and mobile
phones.
2.1.2 Phone Features
Multiple Lines
IP Phone 7950 supports a maximum of six accounts to register at the same time.
IP Phone 7950 provides six lines. Each account can be assigned multiple lines
concurrently.
IP Phone 7950 displays the line usage details of each account, including the bound
account, whether the bound account is registered and call status.
IP Phone 7950 supports line switch with a line button.
Mute
IP Phone 7950 allows a user to mute an ongoing call.After muting the call, the user can still
hear the peer party, but the peer party cannot hear the user. The mute icon is displayed on the
status bar of the user's phone screen.

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Caller ID
IP Phone 7950 displays the number of an incoming call.
Call History
IP Phone 7950 records the call history of all answered, missed, and dialed calls, allowing
users to:
View the call history on the home screen, even during a call.
Add contacts from the call history to the local address book.
Delete one or more contacts from the call history, or clear the call history.
Call or edit a contact from the call history.
Phone Lock
IP Phone 7950 supports automatic and manual phone lock. A password is required to unlock
IP Phone 7950.
Expansion Module
IP Phone 7950 provides more programmable buttons through the expansion module.
Powered by IP Phone 7950: only one expansion module
Powered by an external power supply: up to three expansion modules
PoE
IP Phone 7950 supports PoE.
Languages
IP Phone 7950 allows users to switch between languages.
Display:Arabic, Chinese (simplified and traditional), English, French, Portuguese,
Russian, Spanish, Turkish, German, Polski, and Hungarian
Input: Chinese simplified, English, French, Portuguese, Spanish, Russian, Polski, and
Hungarian
Local Conference
IP Phone 7950 allows a user to hold an ongoing call with another party and set up a call with a
third party for a local conference after the two calls have local audio mixing. After the local
conference is set up, the user can add more participants (a maximum of six participants
including the conference initiator), mute participants, remove participants, or end the
conference.
Hotline
The hotline service allows IP Phone 7950 to automatically connect to a preset number (hotline
number) when a user does not press any key within the preset hotline delay time after picking
up the phone. The hotline number and hotline delay time must be set on IP Phone 7950
beforehand.

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Speed Dial
IP Phone 7950 allows users to program the numbers that they dial most often on line buttons
and programmable buttons on the expansion module. Once a user presses a speed dial button,
a call is made to the preset number.
Emergency Call
Accounts registered on IP Phone 7950 can make emergency calls even if IP Phone 7950 is
locked or unregistered.
Contacts
IP Phone 7950 stores a maximum of 1000 contacts, recording detailed contact
information, such as the profile picture, name, department, and phone number. Contacts
can also be grouped.
Users can add, modify, or delete contacts.
Users can add, modify, or delete contact groups.
Users can call or edit a contact from the contact list.
Users can import or export contact files in .csv or .vcf format through the USB port or
web page. (The IP phone does not support export of the contact file in .vcf format
through the USB port.)
LDAP Directory
IP Phone 7950 can be connected to third-party directory servers through the Lightweight
DirectoryAccess Protocol (LDAP) interface, allowing access to enterprise employees'
information (such as name, department, and phone number). IP Phone 7950 supports directory
servers such as Microsoft Active Directory (AD).
IP Phone 7950 displays information searched out from the LDAP directory in real time.
IP Phone 7950 allows users to perform other operations on the search result, for example,
viewing contact details, saving the contact information, and directly placing a call.
Dialing Rule
IP Phone 7950 allows users to set dialing rules. If the number a user dials matches a preset
dialing rule, IP Phone 7950 automatically converts the number (prefixing the number or
replacing the number) according to that rule and calls the converted number when the preset
delay time expires.
2.1.3 Features Available for Specific Network Environments
Call Hold
IP Phone 7950 supports call hold. If a user wants to place a new call during an ongoing call,
the user can tap the hold button to hold the ongoing call or press the line button to switch to a
new line and hold the ongoing call.

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Call Waiting
IP Phone 7950 allows users to enable or disable call waiting. When call waiting is enabled and
the current line is being occupied, a user will be notified of any incoming call that comes from
another idle line. The user can then press an appropriate softkey to answer the new call.
Call Transfer
IP Phone 7950 allows a user to transfer an ongoing call to a specified user. The other party of
the call can then talk with the specified user. IP Phone 7950 supports two types of call transfer
modes: blind, semi-consult (available only in EC6.X and UC2.X), and consult.
Call Forward
IP Phone 7950 is able to forward calls to the preset phone number or voice mailbox. IP Phone
7950 supports four types of call forward modes: Call Forward All (CFA), Call Forward Busy
(CFB), Call Forward No Answer (CFNA), and Call Forward Offline (CFO). These four
modes can be enabled concurrently.
Call Deflection
IP Phone 7950 allows a user to transfer an incoming call to a specified user, with no need for
the user to set up a call with this specified user. The other party of the call can then talk with
the specified user.
Pickup
IP Phone 7950 allows a user to answer the call for a specified user.
Group Pickup
IP Phone 7950 allows a user to answer the calls for other members in the same pickup group.
If multiple phones in the pickup group ring, the phone that rings first will be picked up.
Distinctive Ring
IP Phone 7950 supports different ringtones for intra-office and outer-office calls.
ACB
In theAutomatic Callback (ACB) service, if the number a user dials is busy or has no
response, the user can press the ACB softkey and hang up. The server, when detecting that the
called party is reachable, automatically calls the calling party. When the calling party picks up
the phone, the server calls the called party to set up a call between them.
Call Park
The call park service allows a user to park a call on the current phone but retrieve the parked
call on another phone.

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BLF(Available only in EC6.X and UC2.X)
The BLF allows users to set the accounts to be monitored on line buttons and programmable
buttons on the expansion module. The status of such accounts can be monitored according to
the colors of the LEDs for the buttons.
DND
When Do Not Disturb (DND) is enabled, no calls will be received.
Advanced Secretary Service
The advanced secretary service allows both a manager and a secretary to share a same phone
number. When there is an incoming call, the manager's and secretary's phones ring
simultaneously. After answering the call, the secretary can call the manager through the
private line. The manager then can press the line button to answer the call.
Voicemail
The voicemail service allows users to never miss a call by saving all unanswered calls to the
user's preset voice mailbox.
Linkage
Users can use a linked eSpace Desktop, on behalf of IP Phone 7950, to make, answer, and
hang up a call. In addition, status information is synchronized between IP Phone 7950 and the
linked eSpace Desktop.
UC Directory
IP Phone 7950 allows users to query enterprise employees' information including the profile
picture, name, department, and phone number. IP Phone 7950 displays the search result
returned from the server after a user enters the search criteria on the directory screen. Users
can further perform operations on the search result, for example, querying details of a
searched contact, saving a searched contact to the local address book, and directly calling a
searched contact.
Instant Conference
IP Phone 7950 allows a user to initiate a voice conference by pressing the conference button.
The conference moderator (initiator) can perform operations such as adding, removing, or
muting participants.
Group Conference
IP Phone 7950 allows a user to initiate a voice conference with all contacts in a contact group.
A conference invitation will be sent to all these contacts. The conference moderator (initiator)
can perform operations such as adding, removing, or muting participants.
One-Key Switch
IP Phone 7950 supports one-key switch, allowing users to switch calls back and forth between
IP Phone 7950 and any other bound IP phone or mobile phone.

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Name and Department Display
IP Phone 7950 displays the peer party's name and department for incoming or outgoing calls.
Profile Picture Display
IP Phone 7950 displays the peer party's profile picture for incoming and outgoing calls.
Call Recording(Available only in EC6.X and UC2.X)
IP Phone 7950 allows a user to start or stop the recording of an ongoing call. The recorded
call is saved on the server.
Status Display (Available only in IMS+UC)
IP Phone 7950 can display the status of contacts in the call history, contact list, and directory.
Extension Mobility
IP Phone 7950 supports extension mobility. After a user logs in to an IP phone and modifies
user configurations, extension mobility automatically synchronizes the modified user
configurations to the corresponding file on the server. When the user successfully logs in to
another IP phone using the same account, this IP phone automatically obtains the latest user
configurations from the server. The user configurations include the contacts, call history,
programmable buttons, server addresses, and services to which the user has subscribed.
Hunt Group (Available only in EC6.X and UC2.X)
IP Phone 7950 supports hunt group. In an enterprise, employees in the same field can be
added to a hunt group, with the group access code configured. After a user dials the access
code of this hunt group, the system calls members in the hunt group, and the phones in the
hunt group ring in the specified ringing mode (simultaneous ringing, sequential ringing, or
cyclic ringing). If no one in the hunt group answers the call, the call is transferred to the
voicemail or a specific number.
Paging (Available only in UC2.X)
IP Phone 7950 supports paging. In an enterprise, multiple numbers that have the same
broadcast subject are added to a paging group, and members in this group are either initiators
or recipients. An initiator can dial the access code of their own paging group to implement
voice broadcast to all recipients. The recipients' phones automatically go off-hook to receive
the broadcast.
Abbreviated Dialing
Abbreviated dialing allows a user to dial an abbreviated number instead of a complete called
number to connect to the called party.
Absence Service (Available only in IMS+UC)
When unable to answer incoming calls, a user can enable the absence service. Then, calling
parties hear an announcement indicating that the user is not at the desk.

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OCB (Available only in EC6.X and UC2.X)
After outgoing call barring (OCB) is enabled, the phone's national and international toll call
rights are password-controlled. Users can password-control national toll calls, international
toll calls, or both on the phone.
Called Party Control (Available only in IMS+UC)
In the called party control scenario, even if the calling party disconnects the call, the call is
not released within a certain period but is placed on hold. The calling party can resume the
call within that period.
Intercom
The intercom function enables users within an enterprise to easily communicate with each
other.
Anonymous Call
With the anonymous call function enabled on a user's phone, the user's information will not be
displayed on the phone of any called party.
MCID (Available only in IMS+UC)
The malicious call identification (MCID) function allows users to identify an incoming call as
a malicious one.
2.1.4 Customized Services
Ringtone Setting
IP Phone 7950 allows users to customize ringtones for each contact or contact group. Users
can also import ringtones.
IP Phone 7950 supports .wav ringtones using PCM coding.
Wallpaper Setting
IP Phone 7950 allows users to import and customize wallpapers.
IP Phone 7950 supports wallpapers in .png, .bmp, or .jpg, format.
XML Application
IP Phone 7950 supports XML applications, allowing users to access a third-party server. The
information obtained from the third-party server will be displayed on the LCD screen of IP
Phone 7950.
2.2 High-Fidelity Voice Quality
In terms of the digital signal processing (DSP) algorithm, IP Phone 7950 employs various
technologies including VAD,AGC, CNG, and PLC, and supports international audio codec

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protocols, including AAC-LD, G.722, G.711a, G.711μ, G.729AB, and iLBC. It also supports
automatic protocol adaptation, choosing a suitable codec protocol for the peer device. These
features can therefore ensure a high quality of voice.
As for the integral components of IP Phone 7950, the speaker, handset, and headset all
provide high-fidelity voice quality.
2.3 Superb Network Adaptability
2.3.1 Multiple Methods for Obtaining IP Addresses
IP Phone 7950 applies to various networking environments.A user can manually set a static
IP address or obtain a dynamic IP address through the Dynamic Host Configuration Protocol
(DHCP).
2.3.2 QoS
IP Phone 7950 supports Layer 2 (802.1Q or 802.1p) and Layer 3 (ToS or DSCP)
configurations, providing optimal voice quality over an IP network.
2.4 Quick and Easy Operation
2.4.1 Easy Installation
Users can use IP Phone 7950 by simply connecting it to the Internet and configuring it on the
LCD screen or web management page. This shows the user-centered design.
IP Phone 7950 also provides the automatic deployment function. Administrators prepare
configuration files on the file server. When powered on, IP Phone 7950 automatically obtains
network parameters from the DHCP server and loads the desired configuration files on the file
server. This ensures the plug-and-play convenience.
2.4.2 Diversified and Easy-to-Use Function Buttons
IP Phone 7950 provides several types of keys and buttons, including number keys, softkeys,
navigation buttons, fixed function buttons, and line buttons. Their functions are as follows:
Softkeys: The LCD screen shows context-sensitive softkeys depending on the operation
that is being performed, greatly simplifying the difficulty in using services.
Fixed function buttons: Frequently-used functions correspond to several buttons. These
buttons are arranged in different areas by functions. Users can use related functions by
simply pressing the buttons instead of operating menus, which makes IP Phone 7950
easier to use.

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2.5 Multiple Auxiliary Ports
2.5.1 Headset Port
IP Phone 7950 provides a headset port (RJ-9/USB), allowing users to use a headset to free up
their hands.
2.5.2 USB Port
IP Phone 7950 provides a USB2.0 port for connecting to a standard USB device. The devices
supported are:
A USB headset.
A USB flash drive, through which ringtones, wallpapers, and contacts can be imported.
2.5.3 Bluetooth Port
IP Phone 7950 provides an embedded Bluetooth module for connecting to a Bluetooth
headset.
2.5.4 External PC Port
IP Phone 7950 provides a 10/100/1000 Mbps port for connecting to a PC.Additional cabling
is unnecessary when IP Phone 7950 is deployed with a PC, which reduces cabling costs.
2.6 Enhanced Maintainability
IP Phone 7950 allows users to quickly locate and rectify faults on the advanced setting screen,
or through diagnostics or eSight.
2.6.1 Status Query
IP Phone 7950 allows users to query its version information and network connection status. It
displays registration or network connection faults directly on the screen.
2.6.2 Phone Diagnosis
IP Phone 7950 provides various diagnosis functions, including screen, backlight, indicator,
microphone, and system diagnosis.
2.6.3 Diagnostics
IP Phone 7950 reports key maintenance information including registration success,
registration failure, network disconnection, and phone fault information to a log server.
Maintenance engineers can use the diagnostics to locate and rectify faults in a timely manner.
2.6.4 Local Upgrade
IP Phone 7950 supports local upgrade. In this upgrade mode, a user can select the local
upgrade file on the web configuration page for IP Phone 7950 system upgrade.

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2.6.5 Automatic Upgrade
IP Phone 7950 supports automatic upgrade. It can search for available upgrade software and
complete the system upgrade automatically. This ensures that the current software is the latest
and most stable version, and significantly reduces maintenance workload.
2.6.6 Terminal Management
IP Phone 7950 can be remotely managed by eSight/TMS. eSight/TMS supports various
operations on IP Phone 7950, including reboot, centralized configuration, general upgrade,
configuration obtaining and system diagnostics export.
2.7 Reliability
2.7.1 Multi-Registration
IP Phone 7950 supports sequential registration:
IP Phone 7950 sends registration messages to a SIP server at intervals of half of the
registration interval. If the active SIP server fails, the IP phone registers with the standby SIP
server. If the standby SIP server also fails, the IP phone registers with the local SIP server.
Services are interrupted during the SIP server switching. After the IP phone registers with a
SIP server successfully, its services become available again.
2.7.2 eSight Redundancy
IP Phone 7950 supports eSight redundancy. The domain name configured on the DNS server
is mapped to two eSight IP addresses, one active and one standby. When IP Phone 7950
receives the IP addresses resolved by the DNS server, IP Phone 7950 first initiates a
connection request to the active eSight. If the active eSight fails to respond, IP Phone 7950
connects to the standby eSight.
2.7.3 Authentication Server Redundancy (Only in EC6.X and
IMS+UC)
In the EC6.X network environment, IP Phone 7950 supports uPortal server redundancy.
During IP Phone 7950 login authentication, if the active uPortal server fails, IP Phone
7950 automatically switches to the standby uPortal server to ensure functional services.
In the IMS+UC network environment, IP Phone 7950 supports AAserver redundancy.
During IP Phone 7950 login authentication, if the active AAserver fails, IP Phone 7950
automatically switches to the standbyAA server to ensure functional services.
2.7.4 Directory Server Redundancy (Only in EC6.X and IMS+UC)
IP Phone 7950 supports directory server redundancy. During directory query, if the active
directory server fails, IP Phone 7950 automatically switches to the standby directory server
for a query.

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2.7.5 NTP Server Redundancy
IP Phone 7950 supports NTP server redundancy. During time update, if the active NTP server
fails, IP Phone 7950 automatically switches to the standby NTP server for time
synchronization.
2.8 Security
To ensure the security of user information, IP Phone 7950 provides the following security
protection measures:
Different permissions for administrators and common users. Users can perform advance
settings only when they provide the correct administrator password.
Encryption of media streams by using 128-bit key sizeAdvanced Encryption Standard
(AES), preventing any unauthorized eavesdropping during a conversation.
Encryption of SIP signaling based on Transport Layer Security (TLS).
Web-based service configuration using HTTPS, ensuring secure access.
802.1x authentication by account and password, allowing secure access to Ethernet
switches.
Certificate-based 802.1x authentication.
Import of multiple certificates for identity authentication.
Encrypted data transmission using LDAPs.
Secure system access using 802.1x Logoff-Proxy, protecting the enterprise network
against unauthorized intrusion.

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3 Technical Specifications
Hardware Specifications
Table 3-1 lists the hardware specifications of IP Phone 7950.
Table 3-1 Hardware specifications
Feature/Mod
ule
Specification
Screen
5-inch, 800 x 480 pixels
LEDs
Line button, Message Waiting Indicator (MWI), Mute, Speaker, Call
History, and Headset LEDs
Foot stand
One foot stand with two adjustable angles
Buttons
Six line buttons
Five navigation buttons: Up/Down/Left/Right/OK
Four softkeys
Four fixed function buttons with LEDs: Speaker, Headset, Mute, and
Call History
Five fixed function buttons without LEDs: Home, Message, Volume,
Contact, and Call Forward
External ports
Two GE ports: 10/100/1000 Mbps adaptive and support for VLAN
configuration
One handset port: RJ-9
One headset port: RJ-9
USB2.0
One USB port for connecting to USB devices, such as a USB headset or
USB flash drive (Ringtones, wallpapers, and contacts can be imported
through the USB flash drive.)
Expansion
module
IP Phone 7903X
Bluetooth
Embedded Bluetooth 2.1
PoE energy
Class 2 (not including the expansion module)

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Feature/Mod
ule
Specification
consumption
class
Power adapter
Input: 100 to 240 V AC
Output: 5 V DC, 2 A
Support for China, Europe, America, Britain, Brazil and Australia
standards
Dimensions
217 mm x 208 mm x 124 mm
Operating
temperature
0°C to 45°C
Storage
temperature
-25°C to +70°C
Operating
humidity
10% to 95%
Storage
humidity
10% to 95%
Power
consumption
6.49 W
Weight
(approx.)
0.9 kg
Certification
CE/FCC/RoHS/WEEE/REACH/UL/SASO
Technical Specifications
Table 3-2 lists the technical specifications of IP Phone 7950.
Table 3-2 Technical specifications
Category
Feature
Specification
Protocols
Network
protocols
TCP/IP, SIP, SDP, UDP, RTP, RTCP, DHCP, DNS,
PPPoE, HTTP, HTTPS, SNTP, and XCAP
Phone
features
Audio codec
G.711a/G.711μ/G.729AB/G.722/ iLBC/
AAC-LD/G.722.1/G.722.2/Opus
Audio features
Inband and RFC2833
Anti-clipping (ACLP)
Acoustic Echo Cancellation (AEC)
Automatic Gain Control (AGC)
Adaptive Jitter Buffer (AJB)
Automatic Noise Restraint (ANR)

7950 IP Phone
Product Overview
3 Technical Specifications
Issue 01 (2017-07-13)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
16
Category
Feature
Specification
Comfort Noise Generation (CNG)
Hearing Aid Compatibility (HAC)
Packet Loss Concealment (PLC)
Voice Activity Detection (VAD)
Side Tone Cancellation
Voice Quality Monitor (VQM)
Buzz cancelation
Call history
Up to 100 records each for dialed, received, and missed
calls
Missed call notification
Contacts
Up to 1000 contacts
Contact import or export through the USB port or web
page
Contact file in .csv or .vcf format
Languages
Display: Arabic, Chinese (simplified and traditional),
English, French, Portuguese, Russian, Spanish,
Turkish, German, Polski, and Hungarian
Input: Chinese simplified, English, French, Portuguese,
Spanish, Russian, Polski, and Hungarian
Ringtone
Selection
Default ringtones (ten ringtones), group ringtones, and
customized ringtones
Ringtone import
The total storage for ringtones and wallpapers is 10MB,
including system ringtones and wallpapers
Format: mono .wav (sampling rate: 8 kHz; precision:
16-bit)
Wallpaper
import
The total storage for ringtones and wallpapers is 10MB,
including system ringtones and wallpapers
Format: .png, .bmp, or .jpg, up to 20 wallpapers
Local
conference
Six-party voice conference
Operations including adding, muting, and removing
participants