AT&T 2500 series Network Router User Manual


 
TRUNKING TERMS AND CAPABILITIES C-17
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TRUNKING CHARACTERISTICS TABLE
D ——identifies the DEFAULT supervision option on the Generic 2 for the associated trunk group type and the
only option for R2V3 and earlier releases.
-## ——identifies a 1- or 2-digit number that corresponds to a particular
DIMENSION PBX and/or System 85
signaling type. Beginning with System 85 R2V4, some trunk types may also be optioned (via administration
procedures) for signaling types other than the default.
Note: Where appropriate the default designator (D) and the signaling type designator (-##) are combined to identify
the default signaling type; for example, the table entry ‘‘D-1’’ means that the default signaling is ‘‘Ground Start.’’
The table entries apply to Generic 2 trunk connections. However, they may also be true for earlier versions of the
switch.
Signaling Types:
1 —Ground start
2 —Ground start with party test
3 —Loop/reverse battery, wink start
4 —E&M immed in/immed out
5 —E&M wink-start in/immed-start out
6 —ANI signaling
7 —Auxiliary equipment
8 —E&M delay-dial in/immed-start out
9 —E&M delay-dial in/wink or delay-dial with
dial-tone out
10 —E&M wink-start in/wink or delay-dial with
dial-tone out
11 —E&M wink-start in/wink or delay-dial out
(universal sequence)
12 —E&M immed in/wink or delay-dial out
13 —E&M release link trunk out
14 —E&M release link trunk in
15 —E&M main satellite immed start
16 —E&M main satellite wink start
17 —E&M main satellite delay-dial out
18 —S-channel signaling, host access GPP, host
access EIA
19 —Loop start
20 —DMI ISDN-MOS
21 —E&M wink-start in/wink-start out
22 —E&M delay-dial in/delay-dial out
23 —E&M delay-dial in/wink or delay-dial out
24 —E&M delay-dial in/wink or delay-dial out
25 —E&M immed-start in/wink or delay-dial
out with fail on timeout
26 —E&M wink-start in/wink or delay-dial out
with fail on timeout
27 —Analog line loop
28 —E&M automatic in/immed-start out
29 —E&M automatic in/wink-start out
30 —Loop/reverse battery, immed-start
31 —E&M immed-start in/automatic out
32 —E&M automatic in/automatic out