SS7 MTP Level 2 User Adaptation Layer (M2UA)

M2UA

Section: OpenSS7 STREAMS SIGTRAN Devices (4)
Updated: 2008-10-31
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NAME

M2UA - SS7 MTP2 User Adaptation Layer (M2UA)

SYNOPSIS

#include <ss7/sli.h>
#include <ss7/sli_ioctl.h>
#include <ss7/m2ua_ioctl.h>

int m2ua_stream = open(``/dev/m2ua'', flags);
int m2ua_stream = open(``/dev/m2ua-cdi'', flags);
int m2ua_stream = open(``/dev/m2ua-dlpi'', flags);

DESCRIPTION

M2UA
is an implementation of the SS7 MTP2 User Adaptation Layer (M2UA) defined in RFC 3331[1]. M2UA provides a backhaul of the services of the sl(4) over an IP network using Stream Control Transmission Protocol, sctp(4), as defined in RFC 2960[2].

M2UA is implemented as a STREAMS(4) multiplexing driver. sl(4) or sctp(4) streams are linked under the M2UA multiplexing driver using the I_LINK or I_PLINK commands of streamio(7), to provide transport or direct SL services[3..5] to M2UA. Once linked, the streams must be configured using m2ua_ioctl(4).

M2UA provides the following stream types that are directly compatible with the stream types provided by sl(4):

/dev/m2ua: This device provides the SL protocol service interface using the SL-primitives of the Signalling Link Interface described in sli(7). This interface is suitable for use with other SS7 modules and drivers.
/dev/m2ua-cdi: This device provides the SL protocol service interface using the CD-primitives of the Communications Data Interface, described in cdi(7). This interface is suitable for use with other modules and drivers expecting a cdi(7) interface.
/dev/m2ua-dlpi: This device provides the SL protocol service interface using the DL-primitives of the Data Link Provider Interface dlpi(7). This interface is suitable for use with other modules and drivers expecting a dlpi(7) interface.

IOCTLS

All interfaces support a set of mangaement IO controls using the ioctl(2) system call on the m2ua_stream. These management controls are documented in m2ua_ioctl(4).

DEVICES

/dev/m2ua, /dev/m2ua-cdi, /dev/m2ua-dlpi.

FILES

<ss7/sli.h>, <ss7/sli_ioctl.h>, <ss7/m2ua_ioctl.h>, <sys/cdi.h>, <sys/cdi_ss7.h>, <sys/cdi_sl.h>, <sys/dlpi.h>, <sys/dlpi_ss7.h>, <sys/dlpi_sl.h>.

VERSIONS

The M2UA driver is specific to the OpenSS7 stack. This is Version 3 of the interface.

REFERENCES

[1]: RFC 3331, Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) --- User Adaptation Layer, September 2002, Ken Morneault, ed., The Internet Society. <http://www.ietf.org/rfc/rfc3331.txt>
[2]: RFC 2960, Stream Control Transmission Protocol (SCTP), October 2000, Randall R. Stewart, ed., The Internet Society. (Obsoleted by RFC 4960) (Updated by RFC 3309) (Status: PROPOSED STANDARD) <http://www.ietf.org/rfc/rfc2960.txt>
[3]: ITU-T Recommendation Q.703, Signalling System No. 7 --- Signalling Link, March 1993, (Geneva), ITU, ITU-T Telecommunication Standardization Sector of ITU. (Previously "CCITT Recommendation") <http://www.itu.int/rec/T-REC-Q.703/>
[4]: ETSI EN 300 008-1 V1.3.1, Integrated Services Digital Network (ISDN); Signalling System No. 7; Protocol Specification, September 2000, (Sophia Antipolis, Valbonne), ETSI, European Telecommunications Standards Institute. [REN/SPAN-01074-1] (ITU-T Recommendations Q.701, Q.702, Q.703, Q.704, Q.705, Q.706, Q.707 and Q.708, modified) <http://www.etsi.org/>
[5]: ANSI T1.111, Signalling System No. 7 --- Message Transfer Part, 1992, ANSI, American National Standards Institute.

TRADEMARKS

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UNIX®: is a registered trademark of The Open Group.
Solaris®: is a registered trademark of Sun Microsystems.

Other trademarks are the property of their respective owners.

IDENTIFICATION

OpenSS7 STREAMS SIGTRAN: Package sigtran version 0.9.2.4 released 2008-10-31.

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