SIP Phone Solution

JPhone, developed by Juphoon, is a solution for SIP Phone, which employs a number of technologies originally created by Juphoon as Fast ABNF, Object Fsm, RTimer and etc.

JPhone provides various traditional services and Value-Added service which are independent of Call Server.

JPhone works with 3G, NGN, P2P, INTERNET and etc.

The JPhone solution allows development and tests on Windows.
-- Tradition Phone
-- PC SIP Soft Phone
-- Cell Phone / IMS UE
-- Embedded SIP Phone
-- SIP IAD/Gateway
-- PDA SIP Phone (For Windows Mobile, Symbian)

Figure1 JPhone’s permanent performance at different devices

2. JPhone GUI

JPhone offers many GUI designs based on different graphic operating systems for reference.

Figure2 JPhone’s reference design of GUI

Please click JPhone-GUI (PDF) to see the complete interface of SIP Phone GUI, download JPhone Demo for WinXP to run the SIP Phone GUI, download windows development version to run like a hardware phone.

3. JPhone Features

JPhone main features are:

-- support basic service

   Basic Call (Audio/Video)
   Call Hold
   Consultation Hod
   Call Transfer (Attend & Unattend)
   Call Waiting
   Call Foward (Busy, No Answer, Unconditional...)
   Redial
   Local 3-way Conference
   Caller ID
   DTMF(InBand, OutBand<RFC2833>, INFO)
   Multi-Line Apperance
   Multi-Account Register
   Multiple Proxy Authentication
   MWI(Message Wait Indicaiton)
   Call History
   Call From History
   Call Log Display
   Mute
   Do Not Disturb
   Automate Accept Call
   XML/INI Config
   Remote Debug/Trace/Update

-- support sipping service

   Call Park
   Hotline (Can set hotline Callee information)
   Automatic Redial
   Single line extension
   Instance Message
   Presence
   Push To Talk

-- support protocol features

   Nat Traversal (STUN, TURN, ICE)
   DTMF (InBand, OutBand RFC2833, SIP INFO)
   DNS (A, SRV, NAPTR)
   Audio QoS Algorithm

4. JPhone architecture

By using JPhone sulotion, users are able to create their own SIP products. Its features are:

--users are able to create basic services within an average of three days
--independent modules can be easily assembled.
--complete middleware functions
--various types of service framework
--support different operating systems and hardware platforms that allows users to develop an application to be used on more than one platform
--can be integrated with Audio/Video Engine of the third parties and provide Audio Demo

Figure3 JPhone’s components

The components in yellow in the figure above are provided by Juphoon, others by the third parties or users. Juphoon’s Audio Engine supports G.711 A/U, GSM, G.723.1, G.729 a/b, iLBC and etc. for processing audio data through audio cards. Juphoon also provides audio technologies on QoS, such as Echo Cancellation (EC) and noise elimination, Jitter Buffer, Voice Activity Detection (VAD) and etc.

5. JPhone Service Framework

Figure 4 JPhone Service Framework

6. JPhone Call Control

Figure5 JPhone’s call process

7. JPhone Audio QoS

Figure 6 Qos requirements on Audio of JPhone