CMX208S1 MX-COM, Inc., CMX208S1 Datasheet - Page 12

• Manufacturer Part Number: CMX208S1
• Description: ISDN dual telephony protocol engine
• Manufacturer: MX-COM, Inc.

ISDN Dual Telephony Protocol Engine
4.4
4.4.1
Configuration can be carried out at any time by causing the POTS port to go off-hook and then immediately
entering a configuration sequence of DTMF tones. The sequence signaled to the CMX208 will determine the
configuration to be performed, as shown in the following table.
Of the above configurations, the following are saved on a per port basis:
The rest are saved on a system-wide basis, the last details entered at either port being the configuration
saved.
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Configuration
Sequence
POTS Configuration
Configuration and Control via DTMF Keypad
MSN
Channel mapping
$90$n
$93$n
$94$n
$95$1
$96$1
$97$1
$02$
$90$
$93$
$94$
$95$
$96$
$97$
Test watchdog
Clear MSN
Save Multiple Subscriber
Number (MSN)
Clear country code
Change country code
Clear channel mapping
Enable channel mapping
Disable Calling Party No.
transmit
Enable Calling Party No.
transmit
Disable DDI transmit
Enable DDI transmit
Disable line failure
detection
Enable line failure detection
Initialize all configurations.
Name
Puts the CMX208 into a permanent loop,
not updating the external watchdog counter,
so after 2s it should reset.
Clears any saved digits
n = MSN (up to 23 digits)
Country code is set to UK by default
n = country code
0 = UK
1 = Belgium
2 = Rest of Europe
Incoming calls on any channel are accepted
(provided other parameters are valid e.g.
MSN).
Where n = 1 or 2 for the appropriate
channel.
Outgoing call SETUP messages do not
contain any Calling Party Number
Information Elements.
Outgoing call SETUP messages contain
Calling Party Number Information Element
with number set to saved MSN (if a number
is present).
Prevents digits being transmitted to the
POTS port upon call connection.
Upon connection of a call on POTS port 1
only, if there was a Called Party Number
Information Element present in the incoming
call setup message, the digits are sent as
DTMF tones to the POTS port.
Once the CMX208 is de-activated it stays
de-activated until the network re-activates it
or an outgoing call needs to be made.
The CMX208 checks to see if the ISDN line
is activated and Layer 2 communications
can be made. It then sets the ILFI pin
accordingly.
Resets all of the configuration variables
back to their default values.
12
Description
2000 Chiron Technology Limited
CMX208 Advance Information
Doc. # 20480214.001
2000 MX-COM, Inc.
No channel
Disabled
Disabled
Enabled
Default
Clear
map
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
UK