Patton electronic SmartNode 4110 Series manual Configuring Dtmf dialing optional

SmartWare Software Configuration Guide 34 • ISDN interface configuration

Configuring DTMF dialing (optional)

Most ISDN terminals support two modes of call setup: En-bloc dialing and overlap dialing. En-bloc dialing transports the full called party information in the first SETUP message from the terminal. This means that the user must dial the number before going off-hook. Overlap dialing transports the called-party number digit by digit, after the first SETUP message, which contains no called-party information at all. Combinations between en-bloc and overlap dialing are possible.

Most terminals use ISDN keypad facility messages to transport digits one-by-one in overlap dialing. But some terminals, especially terminal adapters for analog devices, might transport the digits only using DTMF tones, without associated keypad facility messages.

The DTMF dialing command enables the ISDN port for the use with such devices.

Be sure to only use this command when needed. Otherwise, called party information can be corrupted because the digits arrive twice, as keypad facility messages and also as DTMF tones.

Procedure: To enable DTMF dialing

Mode: Interface ISDN

Step	Command	Purpose
1	node(if-isdn)[if-name]#[no] dtmf-dialing	Enables/Disables DTMF dialing (default: disabled)

Example: Enable DTMF dialing

The following example shows how to enable DTMF dialing for a given ISDN interface.

node>enable

node#configure node(cfg)#context cs

node(ctx-cs)[switch]#interface isdn MyIsdnIf node(if-isdn)[myIsdnIf]#dtmf-dialing

Configuring an alternate PSTN profile (optional)

The PSTN profile contains the configuration for data/voice transmission on circuit-switched channels (see chapter 48, “PSTN profile configuration” on page 597). In the case of ISDN interfaces, the PSTN profile applies to the ISDN B-Channels associated with the interface.

There is a PSTN profile named default, which always exists in the system. If no different PSTN profile name is explicitly configured on the ISDN interface, the profile default is used.

Procedure: To define an alternate PSTN profile for the ISDN interface

Mode: Interface ISDN

Step	Command	Purpose
1	node(if-isdn)[if-name]#[no] use profile	Defines an alternate PSTN profile to be used for
	pstn profile-name	this ISDN interface/Reverts the setting to its default
		(use profile PSTN default)

ISDN interface configuration task list 392