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VOIP DIALER, SIP DIALER

min $5000 USD

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Đã đăng vào hơn 9 năm trước

min $5000 USD

Thanh toán khi bàn giao
Project Description: We need a voip mobile dialer like itel dialer, mosip dialer and other popular dialer \esign that has about 5 screens. (Messages; Recent; Contacts; keypad; About; Settings Invite to Use; Privacy). The app should integrate with the all softswitch like voipswitch, VOS, MTVS, Sippy and all other I. The main functions of the app will include: 1. Making & Receiving VoIP Calls Over 3G, WiFi, GPRS 2. Should not kill the battery of the mobile device 3. Address Book Integration with local Phone Address Book AND the platform 4. User Credentials Save / Change Username & Password 5. Volume Control 6. Protocol SIP (RFC 3261) 7. Media Support RTP (Real Time Transport Protocol) & RTCP (RTP Control Protocol) 8. Transport Mode TCP, User Datagram Protocol (UDP), TCP to UDP Interworking 9. Codecs G.723, G.729, AMR (Adaptive Multi-Rate Compression), iLBC, G.711, GSM. 10. Network Address Translation (NAT) Traversal Through Encryption & STUN 11. Voice Quality Silence Suppression, Packets Loss Management 12. DTMF - (Dual Tone Multifrequency) Generation & Detection (RFC 2833) 13. Call Status Indicator Displayed on phone screen 14. Call History, Call Detail Records, Current Account Balance, Current Account Balance, Current Account Minutes Remaining 15. Speakerphone 16. SMS (through the platform) 17. App will be in English, but should allow for multiple language support by design 18. App should voice and SMS encryption 19. App should work in SIP block countries like UAE, Oman and KSA. These countries not allowed voip sip calls.
Mã dự án: 6625781

Về dự án

21 đề xuất
Dự án từ xa
Hoạt động 9 năm trước

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21 freelancer chào giá trung bình $7.133 USD cho công việc này
Avatar người dùng
Hello sir. I am a passionate mobile developer with 5+ years rich experience. Before felling in love with mobile apps, I had worked extensively with objectiveC, XCode, Java, C++ to have a strong grip on OOP and design patterns. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. your project is one of my favorite and high quality I can provide quick and quality result within your budget. My communication and working time will be flexible to meet your requirement. I will do my best in order to realize your ideas into life.
$5.263 USD trong 30 ngày
5,0 (39 nhận xét)
8,0
8,0
Avatar người dùng
We have made some major modifications on the CSIPSIMPLE add added calls to countries like UAE via VPN and was able to change many aspects of the opensource to produce a product of our own. We can do your modifications as we are a group of specialist software and VOIP developers. Kindly PM me for further discussion
$5.555 USD trong 45 ngày
5,0 (70 nhận xét)
8,1
8,1
Avatar người dùng
A proposal has not yet been provided
$8.421 USD trong 40 ngày
4,8 (49 nhận xét)
8,0
8,0
Avatar người dùng
Hi, I have very good understanding of VOIP and have developed applications on it. I can give you demo for my applications. I have 7 yr experience in mobile app development and have worked on various applications. Please check my profile and portfolio at https://www.freelancer.com/u/NZTSolution.html to get idea about my expertise and quality of work I provide. Looking forward to hear from you. Regards Tushar
$5.263 USD trong 30 ngày
4,9 (36 nhận xét)
7,5
7,5
Avatar người dùng
Hello, Being Leading IT firm based at USA, CANADA we are plenty of experience with the project development area. Now are focused on rest of the globe for NEW MEETUPS and opportunity with new CLIENTS. ++ We can do it so lets come to chat for further discussion. Look forward for your reply ASAP. Tank you.
$6.842 USD trong 30 ngày
5,0 (9 nhận xét)
5,7
5,7
Avatar người dùng
I have built an app like this before. Kindly contact me and lets discuss more on the project requirements. Thanks.
$5.000 USD trong 30 ngày
5,0 (7 nhận xét)
5,3
5,3
Avatar người dùng
Hi, I have 4+ yrs of experienced as an android developer and i have customized dialer based on CSipSimple. If you provide me your SIP ip, user name and password then i will fix them in my dialer and will provide you demo dialer. Please share your skype id for further discussion about this project. Please let me know if you have any query or questions. Best Regards, PyDroid Dev.
$5.555 USD trong 35 ngày
4,9 (22 nhận xét)
4,7
4,7
Avatar người dùng
hello you can use PJSIP to develop a sip phone It can run on ios and android please leave me message for details thanks
$10.000 USD trong 60 ngày
5,0 (6 nhận xét)
4,3
4,3
Avatar người dùng
Hello I have read your job description carefully. I am interested your project because I have rich experiences and high skills in android and IOS mobile app development. I am Native Android & IOS (iOS 7&8)Mobile app developer with over 5 years. Especially, I can build mobile development for iOS(iPhone and iPad) using Objective c, Swift, cocoa, and android Platforms as well as backend services. If you're seeking honesty and professional & reliable contractor for your good idea, I hope to work with you and I would be happy if you could give me a chance. I have good development environment and I can work full time. My workstation and test devices is : - iPhone 5s, 5, 4s, 4, 3G - iPad Retina and Mini - Samsung Galaxy S5, S4, S3, HTC, Google Nexus. Also I do work use my github account and bitbucket account and testflight with clients. I do keep online state on skype and email and I am available to work more than 8 hours a day. As much as product is great, as high as your revenue would be. Best Regards Mao Dan.
$5.555 USD trong 30 ngày
5,0 (2 nhận xét)
2,8
2,8
Avatar người dùng
A proposal has not yet been provided
$5.052 USD trong 20 ngày
4,6 (10 nhận xét)
2,4
2,4
Avatar người dùng
Hello, We are experienced team in mobile development and VoIP services. We understand that you want an app for making calls and sending messages in countries were SIP is blocked. There several ways to make it possible. If you have server-side we can make an app and connect it to it. If you have no server-side for this purpose we can help you to configure it. Please contact us via mail or skype for further details. skype: tv8eye
$6.111 USD trong 30 ngày
0,0 (0 nhận xét)
0,0
0,0
Avatar người dùng
We have the solution for you almost ready. All requirements are realized except this one: 11. Voice Quality Silence Suppression, Packets Loss Management and 19. App should work in SIP block countries like UAE, Oman and KSA. These countries not allowed voip sip calls. Realization of 19 should be the biggest challenge. Do you have some specifications how to avoid blocking? Can you provide some environment for testing? I presume that you will give us the GUI design. To realize this project we need your cooperation on overcoming of voip blocking.
$5.555 USD trong 15 ngày
0,0 (0 nhận xét)
0,0
0,0
Avatar người dùng
Hi, Hi, We have expertise in VoIP OTT calling and messaging Apps & complete solution. We also have expertise with proprietary Voice Engines e.g. SpiritDSP and Imagination Technologies' Hellosoft for superior voice quality (better than Skype), we have integrated these Voice engines with open source sip stack. This have higher upfront cost due to licensing but suitable for large scale setup for superior VoIP apps ( can be considered in future if budget doesn't allow licensing it now). If your budget is low then open source sip stack can be used. The codecs you have listed are already supported. rest of the feature are not complex expect the one listed below. VAD (Voice activity detection/ Silence-suppression): VAD support is per codec base (i.e. enabled if codec support it), AMR-WB has buit in support for VAD. Middle-east call unblocking: We will use SIP-TLS and ZRTP for calls from middle east countries. Also need to use multiple techniques to avoid getting call blockage due to server IP blockage. Packet Loss Management: It is managed by two methods. 1) PLC 2) Redundancy (RFC2198). First method is available in open source solutions while RED is available in proprietary Voice engines. We also have expertise in VoIP backend and can also work with you separately on backend development, least cost routing and career rotating for call termination. Please contact for further details. Regards, Sarfraz Ahmad
$22.222 USD trong 30 ngày
0,0 (0 nhận xét)
0,0
0,0
Avatar người dùng
Good Morning. My name is Luiz Negrini. Work in Universe 91 We have several clients in your business, and frankly, I'm very proud to have helped many of them achieve the desired results in their projects. As you can see, we are a company that has recently started here in Freelancer, we welcome this opportunity because we think the really cool project! We know we are disputing this project alongside many colleagues to, but wanted to make clear that we are willing to grow here on the site and that we also made numerous applications that consume a web service like this. I look forward to this opportunity. Best wishes and success for their projects. Visit our portfolio to see some of our work.
$7.777 USD trong 35 ngày
0,0 (0 nhận xét)
0,0
0,0

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Thành viên từ thg 10 22, 2014

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