Message Transfer Part Level 3 (MTP3)


Overview:-	This is the Signalling System No. 7 (SS7) Message Transfer Part (MTP) Level 3 (MTP3) component of the OpenSS7 SS7 stack. This component implements the MTP Level 3 functions in a STREAMS multiplexing driver. The MTP3 STREAMS driver provides three user-level interfaces: the Message Transfer Part Interface (MTPI), the Network Provider Interface (NPI) and the Transport Provider Interface (TPI). The MTP3 STREAMS driver supports I_LINK and I_PLINK of Signalling Link Interface (SLI) streams providing SS7 MTP Level 2 signalling links under the multiplexing driver.

History:-	The MTP3 component was started in 1996. Current STREAMS based approaches were started in January 2000.

Status:-	The MTP3 component of the OpenSS7 stack is in the Maintenance stage.

Dependencies:-	This component depends on the SS7 MTP Level 2 drivers and the Signalling Link Interface (SLI).

References:-	A reference list for the MTP3 can be viewed here

Design:-	Designs for the MTP3 component will be available here.

Code:-	Code has not yet been released to the public. Source code is available in the CVS Archive under the subdirectory openss7/strss7/drivers/mtp. The MTP component code will be publicly released with the next major release of the strss7 package.

Documentation:-	Documentation has not yet been publicly released. Documentation for the MTP components will be available here. The following preliminary manual pages are available: mtp(4), MTP driver manpage; mtpi(7), MTPI interface manpage; npi_mtp(7), MTP NPI interface manpage; tpi_mtp(7), MTP TPI interface manpage; xti_mtp(3), MTP XTI interface manpage; mtp_socket(7), MTP SOCKETS interface manpage; mtp_ioctl(4), MTP IO Controls; mtp(8), MTP Administration.

Test Results:-	Test results have not yet been released to the public.

Release Package:-	The SS7 Message Transfer Part Level 3 is an integral part of the OpenSS7 STREAMS SS7 stack and can be found in the mtp sub-directory in the strss7 release code. Please see the Downloads Page for more information. Preliminary PICS and PIXIT Proforma for MTP are available here.

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