3.4
Defining The Signalling Bits For The Loop Start Protocol
FUNCTION
TRANSMIT
RECEIVE
EIA/TIA 464-A
STANDARD
A
B
A
B
OUTGOING CALL
Idle
PBX loop closed
PBX pulsing
Dialing CMPL
INCOMING CALL
Idle
CO sends ring
Interval between ring
PBX presents call
PBX answers call
Normal talking STAT
DISCONNECT PBX
PBX opens loop
Idle
CO ABANDONS INCOM...
CO applies ring
Interval between ring
CO abandons
PBX stop presenting
0
1
DP
1
0
0
0
0
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
1
X
X
X
1
0
1
1
1
Waiting for dial tone
“1" vs DP for DTMF
IMI89–207
Troubleshooting The DXPT1 Installation
12 – Troubleshooting The DXPT1 Installation
Содержание DXP Plus Series
Страница 1: ...Digital Communications System R ...
Страница 363: ...Automatic Call Distributor Technical Manual R QuickQ DXP ...
Страница 424: ...Automatic Call Distributor System Manager s Guide R QuickQ DXP ...
Страница 500: ...Wrap up Time 1 6 Wrapping Up A Call 4 3 Z Zoom Box A 2 GCA70 271 Index I 3 ...
Страница 628: ...Interconnecting The VMI X Installing And Programming For ExecuMail IMI89 206 Installing And Programming For ExecuMail 5 ...
Страница 677: ...Connecting The Equipment Installing And Programming The OPX X IMI89 209 Installing The OPX X 7 ...
Страница 728: ...DP I I I I and FX Series Digital Communications Systems Understanding The Visual Man Machine Interface COMDlA ...
Страница 1112: ...9 08 8 90 1 13 4 78 3 94 UNIS029 TAB003 PLS page 6 GCA40 130 DXP Plus General Description 11B Telephone Features ...