 |
 |
|
CCITT
Standart |
Data
Rate |
Full/Half-duplex |
Channel
Separation |
Carrier
Frecuency (Hz) |
Modulation
Method |
Modulation
Rate (Baud) |
Bits
Encoded |
Synchronous/ |
Back
Channel |
GSTN |
Leased
Lines |
Equalization |
Scrambler |
|
v.21 |
300 |
Full |
Frequency
Division |
1080
& 1750 |
FSK |
300 |
1:1 |
Either |
Not Defined |
Yes |
No |
Not
Defined |
Not Defined |
|
v.22 |
1200 |
Full |
Frequency
Division |
1200
& 2400 |
PSK |
600 |
2:1 |
Either |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Fixed |
Yes |
|
v.22 |
600 |
Full |
Frequency
Division |
1200
& 2400 |
PSK |
600 |
1:1 |
Either |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Fixed |
Yes |
|
v.22bis |
2400 |
Full |
Frequency
Division |
1200
& 2400 |
QAM |
600 |
4:1 |
Either |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Fixed/ Adaptative |
Yes |
|
v.23 |
600(1) |
Half |
N/A |
1300
& 1700 |
FM |
600 |
N/A |
Either |
Yes |
Yes |
No |
Not Defined |
Not Defined |
|
v.23 |
1200(1) |
Half |
N/A |
1300
& 2100 |
FM |
1200 |
N/A |
Either |
Yes |
Yes |
No |
Not Defined |
Not Defined |
|
v.25 |
2400 |
Full |
4-Wire |
1800 |
PSK |
1200 |
2:1 |
Synchronous |
Yes |
No |
Point-to-Point
Multipoint 2-Wire |
Not Defined |
Not Defined |
|
v.26bis |
2400 |
Half |
N/A |
1800 |
PSK |
1200 |
2:1 |
Synchronous |
Yes |
Yes |
No |
Fixed |
Not Defined |
|
v.26bis |
1200 |
Half |
N/A |
1800 |
PSK |
1200 |
1:1 |
Synchronous |
Yes |
Yes |
No |
Fixed |
Not Defined |
|
v.26ter |
2400 |
Either |
Echo
Cancellation |
1800 |
PSK |
1200 |
2:1 |
Either |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Either |
Yes |
|
v.26ter |
1200 |
Either |
Echo
Cancellation |
1800 |
PSK |
1200 |
1:1 |
Either |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Either |
Yes |
|
v.27 |
4800 |
Either |
ND
(3) |
1800 |
PSK |
1600 |
3:1 |
Synchronous |
Yes |
No |
Yes
(Assumed) |
Manual |
Yes |
|
v.27bis |
4800 |
Either |
4-Wire
(4) |
1800 |
PSK |
1600 |
3:1 |
Synchronous |
Yes |
No |
2-Wire 4-Wire |
Adaptative |
Yes |
|
v.27bis |
2400 |
Either |
4-Wire
(4) |
1800 |
PSK |
1200 |
2:1 |
Synchronous |
Yes |
No |
2-Wire 4-Wire |
Adaptative |
Yes |
|
v.27ter |
4800 |
Half |
None |
1800 |
PSK |
1800 |
3:1 |
Synchronous |
Yes |
Yes |
No |
Adaptative |
Yes |
|
v.27ter |
2400 |
Half |
None |
1800 |
PSK |
1200 |
2:1 |
Synchronous |
Yes |
Yes |
No |
Adaptative |
Yes |
|
v.29 |
9600 |
Either |
4-Wire |
1700 |
QAM |
2400 |
4:1 |
Synchronous |
No |
No |
Point-to-Point
4-Wire |
Adaptative |
Yes |
|
v.29 |
7200 |
Either |
4-Wire |
1700 |
PSK(5) |
2400 |
3:1 |
Synchronous |
Not Defined |
No |
Point-to-Point
4-Wire |
Adaptative |
Yes |
|
v.29 |
4800 |
Either |
4-Wire |
1700 |
PSK(5) |
2400 |
2:1 |
Synchronous |
Not Defined |
No |
Point-to-Point
4-Wire |
Adaptative |
Yes |
|
v.32 |
9600 |
Full |
Echo
Cancellation |
1800 |
QAM |
2400 |
4:1 |
Synchronous |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Adaptative |
Yes |
|
v.32bis |
14400 |
Full |
Echo
Cancellation |
1800 |
Mod.
Trellis |
2400 |
6:1 |
Synchronous |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Adaptative |
Yes |
|
v.32 |
9600 |
Full |
Echo
Cancellation |
1800 |
QAM |
2400 |
4:1 |
Synchronous |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Adaptative |
Yes |
|
v.32 |
4800 |
Full |
Echo
Cancellation |
1800 |
QAM |
2400 |
2:1 |
Synchronous |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Adaptative |
Yes |
|
v.33 |
14400 |
Half |
Synchronous |
Not Defined |
Yes |
Adaptative |
Yes |
||||||
|
v.34 |
28800 |
Full |
Echo
Cancellation |
1800 |
Mod.
Trellis |
2400 |
12:1 |
Synchronous |
Not Defined |
Yes |
Point-to-Point
2-Wire |
Not Defined |
Yes |
|
CCITT Standart |
Data Rate |
Full/Half-duplex |
Channel
Separation |
Carrier
Frecuency (Hz) |
Modulation
Method |
Modulation
Rate (Baud) |
Bits Encoded |
Synchronous/ |
Back Channel |
GSTN |
Leased
Lines |
Equalization |
Scrambler |
|
103 |
300 |
Full |
Frequency
Division |
2225
& 1720(m) 2025 & 1070 (s) |
FSK |
300 |
1:1 |
Either |
No |
Yes |
No |
Fixed |
No |
|
201 |
2400 |
Half |
None |
1800 |
PSK |
1200 |
2:1 |
Synchronous |
No |
Yes |
Point-to-Point
2-Wire |
Adaptative |
Yes |
|
202 |
1200 |
Half |
None |
1200
& 2200 |
FSK |
1200 |
1:1 |
Either |
Yes |
Yes |
Point-to-Point
2-Wire |
Fixed |
No |
|
208 |
4800 |
Half |
None |
1800 |
QAM |
1600 |
3:1 |
Synchronous |
No |
Yes |
Point-to-Point 2-Wire |
Adaptative |
Yes |
|
212 |
1200 |
Full |
Frequency
Division |
1200
& 2400 |
PSK |
600 |
2:1 |
Either |
No |
Yes |
No |
Fixed |
Yes |