45 lines
1.7 KiB
Smalltalk
45 lines
1.7 KiB
Smalltalk
"
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(C) 2011-2013 by Holger Hans Peter Freyther
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All Rights Reserved
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"
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Object subclass: M2UATerminology [
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<category: 'OsmoNetwork-M2UA'>
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<comment: 'I attempt to help with the terminology for M2UA.
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M2UA is defined in IETF RFC 3331 and is actually from a family
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of closely related RFCs for M3UA, SUA, M2PA.
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The whole idea is that one can adapt the M2UA layer from the classlic
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E1/T1 timeslots to the more modern SCTP (SIGTRAN). MTP3 and above will
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not notice the difference.
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The communication for M2UA is between two systems, both should be
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configurable as either a client or server (listening for incoming SCTP
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connections).
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In general the communication is between a Signalling Gateway
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(SG) and a Media Gateway Controller (MGC). In our world the MGC
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would is the MSC/HLR/VLR/AuC.
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What makes things complicated is the cardinality of systems. There is
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an Application Server (AS), this can have multiple Application Server
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Processes (ASP) for one or multiple MTP links. While the RFC onlys
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says that the SG should the list of ASs in practice both ends need to
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do it.'>
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]
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