Configure SCCP and GTT

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The SCCP protocol provides extended routing, flow control, segmentation, connection-orientation, and error correction facilities in SS7 networks. It relies on MTP for basic routing and error detection.

A GT (global title) is an address used in SCCP for routing signaling messages in SS7 networks. It's unique and identifies a single destination in the SS7 network.

GTT (global title translation) examines the destination address and decides how to identify it in the SS7 network. More about GTT here.

In ysigchan.conf define sccp and gtt objects.

; linkset to STP node
[ls_stp]
;enable=no
type=ss7-mtp3
netind2pctype=ANSI
netindicator=national
local=ANSI,0-0-3
adjacent=ANSI,0-0-1
link=stp

[stp]
type=ss7-m2pa

[sccp]
type=ss7-sccp
pointcodetype=ANSI
netindicator=national
localpointcode=3
management=sccp-mgm
ignore-unknown-digits=no
extended-monitoring=true
extended-debug=true
print-messages=no

[sccp-mgm]
type=ss7-sccp-ansi-mgm
print-messages=true

[gtt]
type=ss7-gtt
sccp=sccp
debugname=GTT

The actual global title translation logic is custom. You could implement it in javascript or another module.
Here is a basic example in regexroute.conf:

[extra]
; install handler for sccp.route message
sccp.route=110,gt,gtt

[gtt]
.*=echo GTT for: \0
; for local node
^8820003$=local;RemotePC=3;route=gt
^88200000=local-e214;RemotePC=3;route=gt 
^00101=local-e212;RemotePC=3;route=gt
^00190=local-e212;RemotePC=3;route=gt
^31337=local-e212;RemotePC=3;route=gt
; send all else to STP node
^882000.$=stp;RemotePC=1;route=gt
.*=echo GTT for \0 failed


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