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Chapter 7 Configuration Overview
Figure 7. M2PA Example
Figure 7 shows an example of a Signaling Gateway connected to a SEP on the TDM side and a SEP on the IP
side.
Example MML for the SIGTRAN M2PA part of the above configuration is:
SNSLI:SNLINK=1,SNTYPE=M2PA,END=C,IPADDR=194.192.185.11,
HPORT=3565,PPORT=3565,LABEL=SEP2-1;
SNSLI:SNLINK=2,SNTYPE=M2PA,END=C,IPADDR=194.192.185.11,
HPORT=3566,PPORT=3566,LABEL=SEP2-2;
C7LSI:LS=2,OPC=3,DPC=2,LSSIZE=2,SS7MD=ITU14,NC=1,NI=2;
C7SLI:C7LINK=3,SNLINK=1,LS=2,SLC=0;
C7SLI:C7LINK=4,SNLINK=2,LS=2,SLC=1;
C7RTI:C7RT=2,NC=1,DPC=2,LS1=2;
7.2.2 M3UA Configuration
The Signaling Gateway employs M3UA to “backhaul” SS7 information to an SS7 resident application. The
Signaling Gateway uses the Stream Control Transmission Protocol (SCTP) to provide a reliable transport
protocol operating on top of IP. The relationship between the SCTP node on the Signaling Gateway and a
peer node is known as an “association”. The Signaling Gateway employs the M3UA protocol to support the
transport of any SS7 MTP3 user signaling (for example, ISUP and SCCP messages) over IP using the services
of SCTP.
In backhaul operation, the Signaling Gateway communicates over an SCTP association using M3UA to an
Application Server Process (ASP). An ASP is a host computer serving as an active or backup process of an
Application Server (for example, part of a distributed virtual switch or database). Examples of ASPs are
processes (or process instances) of MGCs, IP SCPs or HLRs. An ASP is an SCTP endpoint and may be
configured to process signaling traffic within more than one Application Server.
A SIGTRAN link (SNLINK) identifies both the SCTP Association and the peer ASP that uses the Association.
The user can configure the Peer IP addresses (IPADDR, and optionally IPADDR2, a second IP address for
resilience), a host port (HPORT) and a peer port (PPORT). The user can also configure the SIGTRAN link to
act as an IP client or IP server (END), the network the SIGTRAN link exists in (NC) and the Point Code format
that the SIGTRAN link uses (SS7MD). SIGTRAN links are managed using the SNSLx commands.
An Application Server (AS) is the logical entity serving a specific “routing key”. An example of an Application
Server is a virtual switch element handling all call processing for a unique range of PSTN trunks, identified by
an SS7 DPC/OPC/CIC range. Another example is a virtual database element, handling all HLR transactions
for a particular SS7 DPC/OPC/SCCP SSN combination.
The Application Server contains a set of one or more unique SNLINKs of which one or more is normally
actively processing traffic. There is a 1:1 relationship between an Application Server and a specific “routing
key”. The user can configure an Application Server’s Destination Point Code (DPC) of the routing key as well
as the Routing Context (RC) that uniquely identifies the routing key to the peer host application across the
SIGTRAN link.
Application Servers are managed using the SNAPx commands and are associated to SIGTRAN links using the
SNALx commands.
SG
PC3
SEP
PC 1
SEP
PC 2
193.145.185.151
193.145.185.154
IP
Signaling
TDM
Signaling
- Dialogic 1
- SS7G2x Signaling Server 1
- Document Number: 05-2304-004 2
- Contents 3
- Revision History 7
- • Dialogic 8
- Chapter 1 Overview 10
- Chapter 2: Specification 15
- #!/bin/sh 19
- Chapter 4: Operation 20
- Are you sure? [Y/N] 22
- EXECUTED 22
- CNSYS:SECURE=Y; 23
- Chapter 4 Operation 24
- 5.2 Remote Operations 37
- ALREI[:ALP=]; 46
- ALREI:ALP=100; 46
- ALTEI:CLA=3; 46
- CNMOI:C7LINK=,STS=,RTS=; 51
- CNMOE:C7LINK=; 51
- CNMOE:C7LINK=1; 51
- CNPCC:PCM=1-1,SYNCPRI=3; 53
- CNPCE:PCM=; 53
- CNPCE:PCM=1-1; 53
- CNRDE:RDC=; 55
- CNRDE:RDC=1; 55
- CNXCI:OTS=,ITS=,[DUPLEX=]; 64
- CNXCE:OTS=,[DUPLEX=,]; 64
- CNXCE:OTS=1-1-16; 64
- C7RTC:C7RT=1,NC=1,LS1=2; 71
- IPNW=128.66.1.0; 78
- IPGWE:IPGW=; 78
- IPGWE:IPGW=1,; 78
- • MMLOP - MML Log Off Print 80
- • MMLOS - MML Log Off Set 80
- • MMPTC - MML Port Change 80
- • MMPTP - MML Port Print 80
- MNRSI:RESET=Y; 88
- MNRSI:SYSTYPE=SGW; 88
- MSC7P:C7LINK=1; 90
- Output Format 91
- MSEPP:[RESET=,][PAGE=,]; 92
- MSEPP:RESET=YES,PAGE=2; 92
- RDC1=1,LABEL=ALARM; 98
- Chapter 6 Command Definitions 100
- RDPDE:REPORT=1,C7LINK=1; 101
- RDPRE:REPORT=; 104
- RDPRE:REPORT=1; 104
- SGDPI:DEST=1, AS=1; 107
- SGDPC:DEST=1, AS=1; 107
- SGDPI:DEST=,RTPRI=,[LABEL=,]; 107
- SGDPI:DEST=,AS=,[LABEL=,]; 107
- SGIRI:IR=1, DOMAIN=IP,RKI=1; 109
- SGIRC:IR=1,DEST=5; 110
- SGIRE:IR=; 110
- SGIRE:IR=1; 110
- SNALI:AS=,SEQ=,SNLINK=; 115
- SNALI:AS=1,SEQ=1,SNLINK=1; 115
- SNALE:AS=,SEQ=; 115
- SNNAI:NC=,SNLINK=,SS7MD=,NA=; 118
- SNNAE:SNLINK=,NC=; 118
- SNNAE:SNLINK=1,NC=1; 118
- IPADDR2=192.112.111.123;; 120
- SNSLC:SNLINK=1, PPORT=2905; 121
- SNSLE:SNLINK=; 121
- SNSLE:SNLINK=1; 121
- 193.145.185.151 135
- 173.132.73.122 135
- 173.132.73.21 135
- 193.145.185.149 135
- Signaling 137
- 193.145.185.154 138
- SGDPI:DEST=1,RTPRI=NONE,AS=1; 140
- SGDPI:DEST=2,RTPRI=MTP; 140
- • itself 142
- • an IP address of 0.0.0.0 142
- 194.192.185.11 144
- 192.195.185.11 144
- 192.195.185.12 144
- 194.192.185.12 144
- Chapter 10: SS7G2x SNMP MIB 158
- 193.145.185.152 160
- 193.145.185.153 160
- 194.192.185.111 161
- 195.193.185.12 161
- 195.193.185.11 161
- 195.193.185.111 161
- Chapter 12: Command Summary 163
- Chapter 12 Command Summary 164
- Glossary 166
- SEP Signaling End Point 167
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