AudioCodes Mediant 8000 - SS7 M2 TN Tunneling Architecture

Version 6.6 475 October 2014
Installation & Operation Manual 38. Configuring the PSTN Subsystem

Up to 4 SS7 Routes per SS7 Routeset

Up to 16 UAL Groups per Media Gateway board (only 3 local SCTP ports are
supported, however multiple UAL Groups may be defined on the same SCTP
port)

Up to 16 Routing Contexts per SS7 Node

Multiple Media Gateway boards may be attached to the same MTP3 Group to
improve redundancy of SS7 subsytem (For more information, see Section
'Configuring the MTP3/M3UA Application' on page
485).
38.6.2.3 SS7 M2TN Tunneling Architecture
M2TN tunneling is used for transferring MTP2 signaling link over IP network while
both sides of the link are pure TDM sources, which are unaware of the IP tandem that
is used in between them.
The solution is composed of two Media Gateway boards: one at the "remote" PSTN
side and another one at the "central" SS7 TDM switch.
Figure
38-10: SS7 M2TN Tunneling Architecture
The Media Gateway at the "remote" PSTN side is configured as follows:

MTP2 towards the PSTN network

M2UA SG side towards the IP network (no proprietary extensions are needed)
The Media Gateway at the "central" SS7 TDM switch side is configured as follows:

MTP2 towards the PSTN network

M2UA MGC side towards the IP network