【實用通訊app】Telephone4All|最夯免費app-綠色工廠好玩App

Telephone4All is an advance, Encryption VoIP provider for Home and Business Users, we offer free Android phones Encryption cheap calls app which lets you make (free) national or international mobile VoIP calls directly from your Android Phone.

You can save on your Mobile Phone costs by simply installing the Telephone4All app and start making cheap calls. Ad you can have your office or home phone go anywhere you are no extra cost or roaming   Select any contact from your contact list, which is accessible in the app, and start your call using Telephone4All anywhere, anytime.   

Telephone4All operates over multiple internet connection options with powerful Encryption over (3G, Wi-Fi, GPRS, Edge, UMTS) directly from one integrated contact list.

Install Telephone4All now and start making free 3g calls and Wi-Fi calls today; no need for expensive calling plans anymore! Even when abroad, you can save money on your international phone calls to friends and family back home: simply find a public Wi-Fi access point and save on monthly calling charges.  FEATURES   - Make SIP phone calls on your Android Phone  - Make FREE calls to a selection of destinations using your Android Phone

 - Make cheap calls to any international destination

 - Send Cheap Text Messages (SMS) worldwide!  

- Save on calling charges using Wi-Fi, GPRS, EDGE or UMTS  

- Select regular contacts from contact list to make a call

 - Works all around the globe: anywhere, anytime

 - Bypass VoIP blockades with Telephone4All  

- Low Bandwidth; save on roaming

 - Enable your enterprise IP PBX account to send and receive IMs with colleagues -Encryption

- SRTP and TLS -Audio codecs including: G.711 (A-Law, u-LAW), G.722 (NB, WB), G.729*, GSM, Silk (NB , MB, HD, UWB), Speex

 -Video codecs including: H264*, H263+, H263 -Various video quality settings according to your network conditions: Very High, High, Good, Low, Very Low

 -Video Call preview  

-Speaker, mute and hold -Dialing plan support

– create your own dial plan rules -International dialing

– automatically add prefixes to dialed numbers  -Instant Messaging (SIP SIMPLE) -Contacts list integrated with native address book  -Favorites -Presence integrated with contacts -Attachments in IM messages -Emoticons

-Voicemail indicator (MWI) -Detailed call history

  -Echo Cancellation -Support for DTMF via SIP INFO and RFC 2833 -DNS SRV

PBX Features For Business and company users.

Telephone4All PBX service gives even the smallest companies the call routing advantages of the largest enterprises in the world. Since there is no hardware or software to buy, install, maintain or upgrade, it has huge cost advantages over other traditional PBX solutions. What is a Telephone4All PBX System? Telephone4All PBX is the system that provides auto attendant, switchboard, and call center, for business. Using our phones or yours, we provide the PBX features to you. Your company is given either a local or toll-free phone number.

Each employee is assigned a four digit extension number in the system. Flexible PBX company structure and users management:

Each company PBX account is associated with a master account which role is management of the user accounts, virtual numbers and other configuration settings. Master PBX account can define company's division on multilevel branches and departments for example by geographical locations of the offices or by a department’s structure like sales, support, management etc.