[SC.LUG] Port 1765 & CFT

[Geoff]

Whilst attempting to diagnose an issue with an Avaya Argent Branch PBX, 
I found it was sendng and receiving traffic on port 1765, which lead me 
to the iana registered port list. This shows:

cft-0           1761/tcp    cft-0
cft-0           1761/udp    cft-0
cft-1           1762/tcp    cft-1
cft-1           1762/udp    cft-1
cft-2           1763/tcp    cft-2
cft-2           1763/udp    cft-2
cft-3           1764/tcp    cft-3
cft-3           1764/udp    cft-3
cft-4           1765/tcp    cft-4
cft-4           1765/udp    cft-4
cft-5           1766/tcp    cft-5
cft-5           1766/udp    cft-5
cft-6           1767/tcp    cft-6
cft-6           1767/udp    cft-6
cft-7           1768/tcp    cft-7
cft-7           1768/udp    cft-7


I was wondering if anyone could tell me what CFT is?
I have merrily googled away a couple of hours looking for the answer, 
but not found it yet.
Geoff