This is a recording of the November 1, 2023 Live-on-Zoom SIGTRAN M2PA technical training given by Luc Morissette, Director, Customer Service, TelcoBridges.

1. SIGTRAN - M2PA
Confidential

2. Topics Covered in this Presentation
▪ Sigtran M2PA Overview
▪ Sigtran support on TelcoBridges products
▪ M2PA configuration
▪ M2PA Status
• Troubleshooting

3. 3
Sigtran M2PA Overview
Confidential
▪ M2PA Sigtran Protocol
▪ Used to terminate SS7 signaling over IP
▪Replaces TDM MTP2 link (64kbps)
▪ IP/Port instead of Trunk/Timeslot (E1/T1)
▪ Higher bandwidth – usually only one M2PA link is necessary
▪Runs on IP and SCTP
▪ Multiple streams with priority, compared with TCP

4. Sigtran M2PA Overview
4
▪ SSP mode: Used to terminate ISUP/SCCP signaling
▪ Media remains TDM
M2PA
ISUP/SCCP
MTP3
SCTP/IP
MTP2
TDM
Point Codes
IP/Port T1/E1 timeslot

5. Sigtran M2PA Overview
5
▪ STP mode: Used to relay ISUP/SCCP signaling
M2PA
MTP3
SCTP/IP
MTP2
TDM
Point Codes
IP/Port
STP
T1/E1 timeslot

6. SS7 Termination mode
6
Service Switching Point (SSP)
ISUP
MTP3
M2PA links
SSP: Terminates ISUP traffic
M2PA links SS7
Network
STP
SSP
SSP
STP
Each SSP/STP device has a Point Code
Call Control
M2PA
Circuits
Point Codes
Linksets
IP
TMG

7. SS7 Media
7
Media Processing
Media
Switching
T1/E1 links
SSP: Terminates ISUP media traffic
(CIC or circuits) + VoIP
T1/E1 links
SS7
Network
T1/E1
STP
SSP
SSP
STP
VoIP
RTP/UDP
IP
Network
IP
RTP/UDP
IP
TMG

8. SS7 STP with M2PA
8
Signal Transfer Point (STP)
MTP2
STP
SS7 MTP2
Links on TDM
SS7
Network
Sigtran M2PA
on SCTP
STP: Relays ISUP/SCCP traffic
SS7 MTP2
Links on TDM)
SS7
Network
Sigtran M2PA
on SCTP
MTP3
Sigtran
Network
Sigtran
Network
M2PA
Requires a Point Code
TMG/TSG

9. Sigtran Support
9
TMG800 TSG800 TMG3200 TSG3200 TMG7800
Termination
mode
Yes No Yes No Yes
STP mode Yes Yes Yes Yes Yes
Maximum
M2PA links
64 64 84 84 256
▪ Supported on all TelcoBridges platforms
▪ TMG: Media Gateways
▪ TSG: Signaling Gateways
▪ Requires license “SS7_M2PA_LINKS”

10. Remote M2PA
Sigtran system
M2PA Configuration concepts
10
SAP
Remote M2PA
Sigtran system
Peer
Sigtran M2PA link( IP) IP/Port
Network Interface
IP/Port
2.
1.
SAP Peer
Sigtran M2PA link( IP)
Two
IP/Port
Network Interface
IP/Port
Peer
TMG/TSG
TMG/TSG

11. Remote M2PA
Sigtran system
Remote M2PA
Sigtran system
M2PA Configuration concepts
11
SAP Peer
Sigtran M2PA link( IP) IP/Port
Network Interface
IP/Port
3.
SAP
Peer
TMG/TSG

12. M2PA Configuration
12
▪ IP Networks
▪ Local port, Local IP, Vlan, Bonding
▪ M2PA
▪ Remote IP, Remote port, Protocol type (ANSI, ITU, Japan)
Remote M2PA
Sigtran system
Sigtran M2PA link( IP)

13. 13
M2PA – Local IP Configuration
Confidential
•IP Interfaces Menu
Virtual Port – Create New Virtual Port
• Physical ports, VLAN, bonding
IP Interfaces – Create New IP Interfaces
• Traffic Type: Sigtran, Local IP Address

14. 14
IP Virtual Ports
• To create vlan/untagged and bonding
Confidential

15. 15
IP Virtual Ports
• Create new virtual port (Bonding)
Confidential

16. 16
IP Interfaces
• IP Interfaces
• Need one IP interface for Sigtran traffic
Confidential

17. M2PA Configuration
• Create the SCTP Layer
17
(c) 2010-2019 TelcoBridges Inc.

18. 18
M2PA Configuration
• Enable M2PA
• Create Local M2PA Service Access Point (M2PA)
Confidential

19. 19
M2PA Base Configuration
• Default SCTP port for
M2PA traffic is 3565
• Choose local IP
interface
• Configure Peer M2PA
• Protocol Type
• Destination Port
• Destination IP (s)
Confidential

20. 20
Upper layer Configuration
• Configure MTP3 – For STP or SSP mode
• Configure ISUP – For SSP mode
• Activate Configuration
Confidential

21. Status
21
• Can see global status of the system
Physical ports
IP Interfaces

22. IP Status
22
• Availability, link speed, MAC Address, bonding status

23. 23
M2PA Status
Confidential
• Can see the status of the M2PA link

24. 24
M2PA Status – Link control
Confidential
• Additional Information
about the link
• Can change the state of
the M2PA link
• Used for testing
• Apply states
• Will take effect immediately

25. M2PA Configuration – Lab Setup
25
For Lab setup:
▪ MTP3
▪ Point codes, linkset, MTP3 routes
▪ TDM line interface
▪ E1
▪ ISUP
▪ Circuit groups: link with physical timeslots for voice/data

26. M2PA Configuration – Lab Setup
26
ISUP
MTP3
Call Control
M2PA
One Circuit Group
CIC 1 to 31
Point Code: 7.0.1
One Linkset
IP: 192.168.101.181
Port 3565
ISUP
MTP3
Call Control
E1
One Circuit Group
CIC 1 to 31
Point Code: 7.0.2
One Linkset
IP: 192.168.101.160
Port 3565
M2PA
Local IP network
VPN for external connection
E1
Lab setup

27. 27
M2PA Configuration – Lab Setup
• Show Lab configuration and status
Confidential

28. M2PA Bring up sequence
28
M2PA Termination
INIT_ACK
INIT
COOKIE_ACK
Out of Service
Proving Emergency
COOKIE_ECHO
Out of Service
Proving Emergency
IP/Port
Window size, number of streams
Or Normal if second
link of linkset
IP/Port
Window size, number of streams
SCTP association
M2PA link
Alignment Alignment
Ready
Ready
M2PA Termination
MTP3 level messages

29. Troubleshooting tools
• Global Status from Web portal
• See if local IP interface is available
• See if M2PA link is up
• IP Connection test
• Connect SSH to unit
• telnet 172.31.1.1
• ping -B [Local_IP] [Remote_IP]
• For example: ping -B 192.168.101.160 192.168.101.181
29
[confidentiality]

30. Troubleshooting tools
• M2PA Signaling Trace
• Connect SSH to unit
• type “tbsigtrace”
• This will create a M2PA cap file, viewable with wireshark
• Get the file from the unit with sftp:
/lib/tb/toolpack/setup/12358/3.2/apps/tbsigtrace
30
[confidentiality]

31. TBReport
▪ Report
▪ Captures logs for a
specified date

32. TBReport
▪ Report includes
▪ Application logs for a specified time span
▪ Journal of host
▪ Snapshot of the telecom unit configuration and status
▪ Configuration backup

33. Documentation
▪ Installation: https://docs.telcobridges.com/Tmedia_Products_Installation
▪ M2PA overview: https://docs.telcobridges.com/M2PA
▪ M2PA configuration:
https://docs.telcobridges.com/Toolpack:Protocol_Stack_Settings_E#tab=SS7_ISUP
▪ Troubleshooting: https://docs.telcobridges.com/Tmedia_Troubleshooting
▪ Support: https://docs.telcobridges.com/Tmedia_Support

34. THANK YOU!
www.telcobridges.com
support@telcobridges.com
+1.450.655.8993
34
Confidential