CC-2401K2 Page 21 of 66 2007, Copeland Communications, Inc. CC-2401K2 Datasheet Rev 1.5 4. The modem, still in command mode, can be pl" />
參數(shù)資料
型號: CC-2401K2A-CS
廠商: Copeland Communications Inc
文件頁數(shù): 14/66頁
文件大?。?/td> 0K
描述: MODEM 2400BAUD SECURE 3.3V
標(biāo)準(zhǔn)包裝: 30
數(shù)據(jù)格式: V.21,V.22,V.23,Bell 103
波特率: 2.4k
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 模塊
包裝: 散裝
配用: 539-1002-ND - KIT EVALUATION WORLD MODEM II
其它名稱: 539-1010
CC-2401K2A-CS-ND
Data Sheet
CC-2401K2
Page 21 of 66
2007, Copeland Communications, Inc.
CC-2401K2 Datasheet Rev 1.5
4.
The modem, still in command mode, can be placed online as a transmitter by issuing the “ATX2”
command or a receiver by issuing the “ATX3” command. If tonal acknowledgement is not used, the host
can toggle the ESCAPE pin to place the CC-2401 in command mode and issue an “ATX2” or an “ATX3”
command to reverse data direction.
This sequence can be repeated for long messages.
Modem Result Codes and Call Progress
The following table shows the modem result codes that can be used in call progress monitoring. All result
codes are a single character to speed up communication and ease host processing.
Command
Function
a
British Telecom Caller ID Idle Tone Alert
Detected
b
Busy Tone Detected
c
Connect
d
Connect 1200 bps (when programmed as
V.22bis modem )
f
Hookswitch Flash or Battery Reversal
Detected
H
Modem Automatically Hanging Up in !2, !1.
I
Intrusion Completed (parallel phone back on
hook)
i
Intrusion Detected (parallel phone off hook
and on the line)
K
Kissoff Tone Detected
k
Contact ID Kissoff Tone too long (!1)
L
Phone Line Detected
l
No Phone Line Detected
m
Caller ID Mark Signal Detected
N
No Carrier Detected
n
No Dial tone (time-out set by CW[S02])
O
Modem OK Response
R
Incoming Ring Signal Detected
r
Ringback Tone Detected
t
Dial Tone
v
Connect 75 bps TX (V.23 originate only)
x
Overcurrent State Detected After and Off
Hook Event
^
Kissoff tone detection required
.
Dialing Complete
Automatic Call Progress Detection
The CC-2401 has the ability to detect dial, busy and ringback tones automatically.
The following is a
description of the algorithms that have been implemented for these three tones.
-
Dial Tone. The dial tone detector looks for a dial tone after going off hook and before dialing is initiated.
This can be bypassed by enabling blind dialing (set S07[6](BD) = 1). After going off hook, the modem
waits the number of seconds in S01 (DW) before searching for the dial tone.
In order for a dial tone to be detected, it must be present for the length of time programmed in S1C (DTT).
Once the dial tone is detected, dialing commences.
If a dial tone is not detected within the time
programmed in S02 (CW), the CC-2401 hangs up and returns an “n” to the user.
-
Busy/Ringback Tone. After dialing is completed, the CC-2401 monitors for Busy/Ringback and modem
answer tones. The busy and ringback tone detectors both use the call progress energy detector. The
registers that set the cadence for busy and ringback are listed in the following table.
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