Dtmf Detection - Panasonic KX-TDA0480 Installation Manual

Planning
• Under high network load and poor transmission conditions, a fax communication may be
dropped.
• During a fax connection, the KX-TDA0480 sends a Ring Back Tone (RBT) until a fax
connection is achieved.

2.1.4 DTMF Detection

The KX-TDA0480 provides DTMF detection and regeneration capabilities.
Characteristics
• Sending units detect and convert DTMF tones for reliable TCP transmission.
• Receiving units regenerate DTMF tones.
• Assures accurate and reliable transmission when interfacing with Auto Attendant/Voice
Mail or Interactive Voice Response systems.
• Selecting the DTMF signal method which the KX-TDA0480 sends from among Auto,
Alphanumeric, and Signal.
Operational limits
• When a unit is configured to use DTMF regeneration, the feature may introduce some
transmission delay.
In most cases (Voice Mail, IVR, Auto Attendant), it will be the calling party which will need
to send DTMF tones by dialling numbers. As a general rule it is best to avoid duplicating
detection on two communicating KX-TDA0480. This can be accomplished by always
selecting the DTMF detect Outgoing parameter when using DTMF regeneration.
In the example shown in DTMF Detection, two units use DTMF regeneration and are
configured so that the feature is enabled only once irrespective of which unit initiates
communications.
DTMF Detection
16
IP-Gateway Card
(DTMF Outgoing)
IP Network
Voice path used
IP-Gateway Card
(DTMF Disabled)
IP-Gateway Card
(DTMF Outgoing)
Installation Manual