Nortel Networks Water System BCM 1000 用户手册
Appendix G Market profile attributes
79
BCM 4.0 for BCM1000 Installation and Maintenance Guide Addendum
North America
Yes
N/A
60
40
700
Poland
Yes
[1] Polish ASS_1_v1.doc
[2] ITU-T Telecommunication
Standardization Sector of ITU
Supplement2 Series E 01/94
Standardization Sector of ITU
Supplement2 Series E 01/94
66
33
700
Taiwan
Yes
[1] Technical Specifications for
Terminal Equipment for Connection
to Public Switched Telephone
Network, PSTN01, September 27,
2001
Terminal Equipment for Connection
to Public Switched Telephone
Network, PSTN01, September 27,
2001
66
33
800
United Kingdom
Yes
N/A
66
34
740
Table 25 Transmission parameters
Market profile
Transmission
PCM coding
scheme
scheme
AC impedance
Loop length
adjustment
capability
adjustment
capability
Tx CO gain
(short, medium,
long)
(short, medium,
long)
Rx CO gain
(short, medium,
long)
(short, medium,
long)
Australia
A-law
220
Ω
+ (820
Ω
||
120nF)
No
(N/A, 0, N/A)
(N/A, 6 dB, N/A)
Brazil
A-law
600
Ω
/900
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
CALA
A-law
600
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
Canada
mu-law
600
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
Caribbean
mu-law
600
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
Global
A-law
600
Ω
No
(N/A, 3 dB, N/A)
(N/A, 3 dB, N/A)
Mexico
A-law
600
Ω
No
(N/A, 3 dB, N/A)
(N/A, 3 dB, N/A)
New Zealand
A-law
320
Ω
+ (1050
Ω
||
230nF)
No
(N/A, 3 dB, N/A)
(N/A, 3 dB, N/A)
North America
mu-law
600
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
Poland
A-law
600
Ω
No
(N/A, 3 dB, N/A)
(N/A, 3 dB, N/A)
Taiwan
u-law
600
Ω
Yes
(-3 dB, 0, 0)
(0, 0, 3 dB)
United Kingdom
A-law
320
Ω
+ (1050
Ω
||
230nF
No
(N/A, 3 dB, N/A)
(N/A, 3 dB, N/A)
Table 24 Localization, PSTN standards, and pulse dialing parameters (Sheet 2 of 2)
Market profile
Localized
PSTN standards
Pulse Dialing (ms)
Break
time
time
Make
time
time
Interdigit
time
time