Aculab SS7 and SIGTRAN signalling protocols
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Technical summary

SS7 capability
Operating systems supported
Linux; SPARC Solaris; Windows XP, 2000, Server 2003
Software availability
Protocol software may be downloaded from Aculab’s website
Aculab hardware options supported

Prosody X PCI board

PMXC 1, 2, 4 or 8 (1, 2, 4 or 8 trunks)
Prosody X PCIe board
1, 2 or 4 trunks on board, SS7 via DSP module(s)
Prosody X cPCI board
PMXC 8 or 16 (8 or 16 trunks)
Prosody PCI board
PM1, 2 or 4 (1, 2 or 4 trunks)
Prosody cPCI board
PM4 (4 trunks)
E1/T1 PCI board
PM1, 2 or 4 (1, 2 or 4 trunks)
Prosody X PCIe E1/T1 board
1, 2 or 4 trunks on board, SS7 via DSP module(s)
Prosody X cPCI E1/T1 board
PMXC 8 or 16 (8 or 16 trunks)
Signalling and bearer channel details
Load sharing
Supports load sharing for both ISUP and TCAP messages
Bearer circuits
The software supports an unrestricted number of E1/T1 bearer circuits
Bearers can be distributed across multiple chassis sharing a single point code
ISUP and TCAP hosts
The software supports an unrestricted number of ISUP or TCAP hosts
Signalling mode
Fully or quasi-associated
Signalling links
Up to 128 user-defined 64kbits/s timeslots per board1
Up to 128 signalling links per local point code1
Signalling links can be distributed across Aculab hardware1
Link sets
Up to 128 link sets distributed across Aculab hardware1
MTP3/M3UA
Dual resilient MTP3/M3UA – signalling connections can be split across two chassis
SIGTRAN (M3UA/SCTP)
Peer-to-peer and gateway modes supported
M3UA capacity
Licensed from 200 to 3200 transmit messages per second
LUDT (broadband) messages
Transmit and receive
Protocol conformance
TCAP (transaction capabilities application part)3 5
ITU Q.771-Q.774 (1996/white book); ANSI TCAP T1.114 1996;
China TCAP GF011-95
SCCP (signalling connection control part)3 5
ITU Q.711-Q.714 (1996/white book); ANSI SCCP T1.112 1996;
China SCCP GF010-95
ISUP (ISDN user part)3
ITU-T ISUP (1997/white book); ANSI ISUP T1.113 (1995); Q.767 International ISUP; China ISUP YDN-038 (1997); ETSI ISUP V4 (2001); UK ISUP (2001); user definable variants2
MTP 3 (message transfer part layer 3)3
Q.704 (1996/white book); ANSI T1.111 (1996); China GF001-9001 (1990)
MTP 2 (message transfer part layer 2)3
Q.703 (1996/white book); ANSI T1.111 (1996); China GF001-9001 (1990)
M3UA (message transfer part 3 user adaptation layer)4
IETF RFC 4666; ETSI TS 102 142 V1.1.1 (2003-05)
SCTP (stream control transmission protocol)
IETF RFC 2960; RFC 3257; RFC 4166

1. System capacity depends on the hardware types used – contact your Account Manager for details.
2. Aculab’s SS7 software enables user-configurable ISUP message formats through which other national and international variants can be defined to meet specific needs.
3. These signalling protocols are offered under a cost free licence when used with Aculab’s boards in cPCI, PCI or PCIe form factor.
4. M3UA signalling software is offered for a fee under the terms of a software licence for use on a per host PC basis.
5. The software supports the combination of ANSI TCAP with ITU SCCP (and vice versa), as required in some markets.

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