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2. Short Message service center - Wikipedia

   en.wikipedia.org/wiki/Short_message_service_center

   An SMS center (SMSC) is responsible for handling the SMS operations of a wireless network. When an SMS message is sent from a mobile phone, it will first reach an SMS center. The SMS center then forwards the SMS message towards the destination. The main duty of an SMSC is to route SMS messages and regulate the process.

3. Short Message Service technical realisation (GSM) - Wikipedia

   en.wikipedia.org/wiki/Short_Message_Service...

   The Interworking MSC of the SMSC, on receipt of the MAP mo-ForwardSM message, passes the SMS-PP [2] Application Protocol Data Unit (APDU) containing the text message to the actual Service Centre (SC) of the SMSC for storing, and subsequent "forwarding" (delivery) to the destination address and the SC returns an acknowledgement indicating ...

4. GSM services - Wikipedia

   en.wikipedia.org/wiki/GSM_services

   Short Message Service (more commonly known as text messaging) has become the most used data application on mobile phones, with 74% of all mobile phone users worldwide already as active users of SMS, or 2.4 billion people by the end of 2007. SMS text messages may be sent by mobile phone users to other mobile users or external services that ...

5. Unstructured Supplementary Service Data - Wikipedia

   en.wikipedia.org/wiki/Unstructured_Supplementary...

   The connection remains open, allowing a two-way exchange of a sequence of data. This makes USSD faster than services that use SMS. [1] While GSM is being phased out in the 2020s with 2G and 3G technologies, USSD services can be supported over LTE, 5G, and IMS.

6. SMS home routing - Wikipedia

   en.wikipedia.org/wiki/SMS_home_routing

   SMS Home Routing is a modification to the original GSM specifications that changed the way inbound (off-net) SMS messages are treated by mobile telecommunications networks. . Adopted by the 3GPP in 2007, Home Routing was devised to enable mobile networks to offer a full range of advanced services on both inbound and outbound SMS, giving more utility to phone users and enabling operators to ...

7. Mobile Application Part - Wikipedia

   en.wikipedia.org/wiki/Mobile_Application_Part

   MAP for UMTS ("3G") and GSM (Release 99 and later) is specified by 3GPP TS 29.002 (MAP v3) In cellular networks based on ANSI standards (currently CDMA2000 , in the past AMPS , IS-136 and cdmaOne ) plays the role of the MAP a similar protocol usually called IS-41 or ANSI-41 (ANSI MAP).

8. List of wireless network technologies - Wikipedia

   en.wikipedia.org/wiki/List_of_wireless_network...

   CDMA2000 is a family of 3G mobile technology standards for sending voice, data, and signaling data between mobile phones and cell sites. It is a backwards-compatible successor to second-generation cdmaOne (IS-95) set of standards and used especially in North America and South Korea, China, Japan, Australia and New Zealand.

9. CDMA2000 - Wikipedia

   en.wikipedia.org/wiki/CDMA2000

   CDMA2000 1X (IS-2000), also known as 1x and 1xRTT, is the core CDMA2000 wireless air interface standard.The designation "1x", meaning 1 times radio transmission technology, indicates the same radio frequency (RF) bandwidth as IS-95: a duplex pair of 1.25 MHz radio channels. 1xRTT almost doubles the capacity of IS-95 by adding 64 more traffic channels to the forward link, orthogonal to (in ...