Справочник Пользователя для Lucent Technologies Definity Enterprise Communication Server 8.2
DEFINITY ECS Release 8.2
Administrator’s Guide
Administrator’s Guide
555-233-506
Issue 1
April 2000
Features and technical reference
1321
DS1 Trunk Service
20
Channel Associated Signaling (CAS) is similar to common-channel signaling and
is used only when the Bit Rate is 2.048 Mbps (the trunk is used with an E1
interface). Signaling is carried on the 16th channel.
is used only when the Bit Rate is 2.048 Mbps (the trunk is used with an E1
interface). Signaling is carried on the 16th channel.
Common-channel signaling and channel associated signaling provide a maximum
transmission rate of 64 Kbps for bearer channels.
transmission rate of 64 Kbps for bearer channels.
Robbed-bit signaling is a per-channel signaling technique for transmitting
signaling bits on each channel in a DS1 facility. The least-significant bit in every
6th transmitted information frame is removed and replaced by a signaling bit. This
technique is also called in-band signaling. The maximum transmission rate for
each bearer channel with robbed-bit signaling is 56 Kbps.
signaling bits on each channel in a DS1 facility. The least-significant bit in every
6th transmitted information frame is removed and replaced by a signaling bit. This
technique is also called in-band signaling. The maximum transmission rate for
each bearer channel with robbed-bit signaling is 56 Kbps.
ISDN-PRI signaling is carried on the 24th channel for a 1.544 Mbps connection
and on the 16th channel for a 2.048 Mbps connection.
and on the 16th channel for a 2.048 Mbps connection.
Public network signaling administration for ISDN-PRI Layer 3
The table below shows DEFINITY ECS public network access connections for
ISDN-PRI Layer 3.
ISDN-PRI Layer 3.
Admin
value
value
Country
Protocol supported
B-channel
mtce msg
mtce msg
1 - a
United States,
Canada
Canada
AT&T TR 41449/ 41459 (tested with AT&T
network, Canadian network, and MCI
network)
network, Canadian network, and MCI
network)
Service
1 - b
United States
Bellcore TR 1268;
NIUF.302; ANSI T1.607
NIUF.302; ANSI T1.607
Restart
1 - c
United States
NORTEL DMS-250 BCS36/IEC01
Service
2a
Australia
AUSTEL TS014.1;
Telecom Australia TPH 1856 National ISDN
protocol
Telecom Australia TPH 1856 National ISDN
protocol
Restart
2b
Australia
ETSI ISDN protocol
Restart
3
Japan
NTT INS-NET
Restart
4
Italy
ETS 300 102
Restart
5
Netherlands
ETS 300 102
Restart
6
Singapore
ETS 300 102
Restart
7
Mexico
ETS 300 102
Restart
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