The BSSMAP protocol was extended to be able to negotiate per-call IP/Port To capture protocol traffic with Wireshark when connected via OsmoSTP use port. Handling of Abnormal Events Related to the BSSAP Header. MS are identified as DTAP by the Protocol Discriminator Information Element. BSSMAP-LE PERFORM LOCATION ABORT message. If the SMLC cannot proceed with positioning due to some protocol violation or error condition (e.g.

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CDMA is a spread spectrum technology, which means that it spreads the information contained in a particular signal of interest over a much greater bandwidth than the original signal. The digital nature of GSM allows data, both synchronous and asynchronous data, to be transported as a bearer service to or from an ISDN terminal.

One or more Kbps timeslots are used to carry signaling information. Protocols The GSM protocol family consists of many protocols, and other protocols are conveyed on top of these. CDMA has been used in many military applications, such as:.

For more protocols related to cellular protocols see the following protcool The DTAP data is user information and carries messages related to call control and mobility management between two users, i.

The acronym was preserved but a new, English meaning was given to it later, once the potential of the technology was understood. For information on cellular and telecom protocol testing. Based on spread spectrum theory, it gives essentially the same services and qualities as wireline service. The B interface is an internal interface and is not visible in most implementations.


ISUP is used for both speech and data call setup. These messages are partially processed by the BSC to add necessary information required for other entities to process these requests. MS Mobile Set The phone or modem. Global System for Mobile communication GSM protocol family GSM is a technology for digital wireless telecommunications, represented by a decent number of specifications.

It employs a commercial adaptation of a military spread-spectrum technology.

BSSAP – Wikipedia

protcol Is in charge of the radio part. Please don’t pee in the pool. UE User Equipment The phone or modem. This message is sent by an entity to its peer entity that it is using one or more circuit identity code which are unknown. The messages are transparent to BSS except for a few exceptions.

Figure shows this interface and protocol stack.

Direct transfer application part. A slave of the BSC from which it takes its configuration. With CDMA, unique digital codes, rather than separate RF frequencies or channels, are used to differentiate subscribers.

Protocol: GSM A interface – BSS Application Part

This message is sent to in response of a message which can not be treated correctly by the receiving entity and for which another failure message can not substitute. Figure shows the protocol stack used on these interfaces. It authenticates the user in the network. At the physical layer, it uses a 2-Mbps PCM30 link. The HLR contains such data as the current roaming, redirection, and special services settings.

Global System for Mobile communication (GSM) protocol family

MAP relies on TCAP bssmp to establish non-circuit-related communication between two entities in the signaling network to exchange data and control information.


Powered by MoinMoin and Python. The GSM recommendations do not encourage the use of this interface and have not updated specifications for this interface since Release See the License page for details.

TUP basmap an old protocol and may not be used in newer implementations. By the beginning ofthere were 1. The codes are shared by both the mobile station cellular phone and the base station, and are called pseudo-random code sequences.

Since each user is separated by a unique code, all users can share the same frequency band range of radio spectrum. Control Protocols IP Q. EIR Equipment Information Registry Keeps track of Mobile Phones; it could be used to find stolen equipment if operators were forced to use it they make plenty of money out of calls made from stolen phones so they won’t do it unless forced.

The most basic teleservice supported by GSM is telephony. So two sets of protocols are used – Control Plane Protocols that control the calls and user plane protocols that carry the user’s data. Request to start a trace of a single connection. See SS7 for a description of SS7 protocols. The connection-oriented services are used for dedicated procedures such as handover and assignment procedures.