Avaya Communication Manager Administrator's Manual page 1634

Screen Reference
For trunk ports on TN2242 and TN464B and later circuit packs, this field allows you to invert the
A- and B-bits as necessary so that the far-end server/switch can understand seizure and
release signals from Communication Manager. If the far-end media server or switch, such as a
central office, on this trunk group interprets the A- and B-bits differently from the default, you
might need to invert one or both bits — to change "1" to "0" and vice-versa in the A-bit, for
example.
Valid entries
A
B
A&B
none
A and none
Supplementary Service Protocol
Appears only when Group Type is ISDN.
Valid entries
a
b
c
d
e
f
g
1634 Administrator Guide for Avaya Communication Manager
Usage
For the TN464B and later circuit packs, indicate which bits, if any, should
be inverted.
For the Japanese 2Mbit trunk circuit pack, indicate which bits, if any,
should be inverted.
Usage
Allows ASAI Flexible Billing.
AT&T, Bellcore, Nortel.
When the Country Code field on the DS1 screen is 1A, SSA selects AT&T
custom supplementary services.
When the Country Code field on the DS1 screen is 1B, SSA selects
Bellcore Supplementary Services.
When the Country Code field on the DS1 screen is 1C, SSA selects
Nortel Proprietary Supplementary Services.
QSIG; also used for SBS signaling trunk groups when full QSIG
functionality is needed.
ETSI
Use c protocol for Network Call Deflection.
ECMA QSIG
Allows ASAI Flexible Billing.
Allows DCS with rerouting. DCS with Rerouting must be y, and the Used
for DCS field on the Trunk Group screen must be y.
Feature Plus
ANSI. Available only if, on the System-Parameters Customer-Options
screen, the ISDN-PRI or ISDN-BRI field is y or the Used for DCS field is y.
Use g protocol for Network Call Transfer.