Data Sheet
World modem II
Page 9 of 60
2004, Copeland Communications, Inc.
World modem II Datasheet Rev 1.1
Protocol Characteristics (Continued)
Item
Specifications
Receive Carrier
ITU-T V.90
1
As specified by ITU-T
ITU-T V.34
2
As specified by ITU-T
ITU-T V.32bis
1800 Hz
±7 Hz
ITU-T V.32
1800 Hz
±7 Hz
ITU-T V.22, V.22bis/Bell 212A
Originate mode
2400 Hz
±7 Hz
Answer mode
2400 Hz
±7 Hz
ITU-T V.21
Originate mode
Mark (980 Hz
± 12 Hz) Space (1180 Hz ± 12 Hz)
Answer mode
Mark (1650 Hz
± 12 Hz) Space (1850 Hz ± 12 Hz)
Bell 103
Originate mode
Mark (2225 Hz
± 12 Hz) Space (2025 Hz ± 12 Hz)
Answer mode
Mark (1270 Hz
± 12 Hz) Space (1070 Hz ± 12 Hz)
Carrier Detect (level for ITU-T V.22bis, V.22, V.21, 212,
103) in Switched Network
Acquisition (-43 dBm) Release (-48 dBm)
Hysteresis
2 dBm minimum
Note: ITU-T V.90
1, V.342, V.32/V.32bis are echo canceling protocols that use signal quality as criteria for maintaining
connection. They also provide for self-training detection to forced disconnect
DTE Interface
EIA/TIA-232-E (ITU-T V.24/V.28/ISO 2110)
Line Equalization
Automatic Adaptive
Connection Options
Loss of Carrier in ITU-T V.22bis and lower
Phone Types
500 (rotary dial), 2500 (DTMF dial)
Dialing
Pulse and Tone
DTMF Output Level
Per Part 68
Pulse Dial Ratio
Make/Break 39/61%
Ring Cadence
On 2 seconds; Off 4 seconds
Call Progress Monitor
BUSY, CONNECT (rate) NO ANSWER, NO CARRIER,
NO DIALTONE, OK, RING, RINGING
Notes:
1. Supported on CC-56K2 only.
2. Supported on CC-56K2 and CC-33K2 only.