Call completion


Call completion

Call Completion is a telephony feature allowing some form of alternative interaction between parties who cannot converse directly with each other.There are several possible factors which can prevent a call from connecting successfully:
* User does not answer
* User is busy in another call
* User is offline/unavailable
* User actively disconnects the call before answering

There are various definitions as to what exactly constitutes Call Completion.Generally speaking, Call-Completion may encompass the following services:
*Voicemail
*Call transfer
*Call waiting
*Messaging (e.g. SMS, IM)
*Presence notification
*Call Queueing
*Automatic redial
*Text to Speech interaction

The rational for providing these features is that allowing some sort of communication between parties unable to talk directly serves both the interests of the callers (allowing them to exchange information despite the inability to talk), as well as the Telecom operators, as the service allows them to get some return for providing the resources for the call (whereas if the caller simply hangs up, the operators basically have provided the call resources with no return).

Call Completion features can be implemented on a PBX (e.g. Call Hold/ Transfer), dedicated server (e.g. a Voicemail Server) or directly on the client device (e.g. Messaging applications).

There are several commercial companies which provide Call Completion features, as well as IETF documents specifing Call-Completion features for open standards, such as SIP.

References

* [http://www.bliss-ietf.org/drafts/draft-poetzl-bliss-call-completion-01.txt Call Completion Support for SIP]
* [http://www.ietf.org/internet-drafts/draft-ietf-bliss-call-completion-02.txt Call Completion for Session Initiation Protocol (SIP)]
* [http://www.ietf.org/proceedings/06jul/slides/sipping-7/sipping-7.ppt IETF Call Completion PPT]

External links

* [http://www.ericsson.com/solutions/products/hp/Ericsson_Call_Completion_Applications__CCA__1_0_pos.shtml| Call Completion on Ericsson website]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Call origination — Call Origination, also known as voice origination, refers to the collecting of the calls initiated by a calling party on a telephone exchange of PSTN, and handing off the calls to a VoIP endpoint or to another exchange or telephone company for… …   Wikipedia

  • Call Forwarding — Als Vermittlungstechnische Leistungsmerkmale (engl.: supplementary services), oder auch kurz Dienstmerkmale genannt, bezeichnet man bei einem öffentlichen Telekommunikationsnetz zusätzlich durch das Netz zur Verfügung gestellte teilnehmerbezogene …   Deutsch Wikipedia

  • Call On A Put — One of the four types of compound options, this is a call option on an underlying put option. If the option owner exercises the call option, he or she receives a put option, which is an option that gives the owner the right but not the obligation …   Investment dictionary

  • call it a day — Synonyms and related words: break, breathe, button up, call a strike, call it quits, cap, carry to completion, clean up, climax, close down, close out, close shop, close up, complete, conclude, crown, culminate, end, finalize, finish, finish off …   Moby Thesaurus

  • call stack — noun A stack that stores details of the functions called by a program in sequence, so that each function can return on completion to the code that called it …   Wiktionary

  • Busy Hour Call Attempts — Saltar a navegación, búsqueda En las telecomunicaciones, Busy Hour Call Attempts (BHCA) o Intentos de LLamadas en Horas Pico, es una media de ingeniería de teletráfico utilizada para evaluar y planificar la capacidad de las redes telefónicas.… …   Wikipedia Español

  • Busy Hour Call Attempts — In telecommunications, Busy Hour Call Attempts (BHCA) is a teletraffic engineering measurement used to evaluate and plan capacity for telephone networks. BHCA is the number of telephone calls attempted at the busiest hour of the day (peak hour),… …   Wikipedia

  • Controversies surrounding Call of Duty: Modern Warfare 2 — Call of Duty: Modern Warfare 2 is a first person shooter video game released for the Xbox 360, PlayStation 3, and Microsoft Windows on November 10, 2009. In addition to being a critically acclaimed best seller, the game has garnered much… …   Wikipedia

  • Decreasing graduation completion rates in the United States — The Graduation completion rate is the measure reflecting the amount of students who complete their graduation and receive a degree from an educational institution. The drop out rate is the measure reflecting the amount of students who disengage… …   Wikipedia

  • Explicit Call Transfer — Als Vermittlungstechnische Leistungsmerkmale (engl.: supplementary services), oder auch kurz Dienstmerkmale genannt, bezeichnet man bei einem öffentlichen Telekommunikationsnetz zusätzlich durch das Netz zur Verfügung gestellte teilnehmerbezogene …   Deutsch Wikipedia