3Com 10014299 manual Configure Call Processing Method on an Interface

192CHAPTER 15: CONFIGURING ISDN PROTOCOL

Configure ISDN DoV ISDN call includes voice call and digital call. Different communication mode makes different calls. In common circumstances, users initiate voice call when making voice communication and initiate digital call when making data transmission. ISDN DoV (Data over Voice) can firstly establish connections by voice call, and then begins data transmission. ISDN DoV can apply to such conditions as digital call is disabled (for example, long-distance call). However compared with digital call, ISDN DoV has some disadvantages. It cannot guarantee correct data transmission all the time and needs ISDN network support.

1Configure Calling Method for Initiating a Connection on an Interface

For an interface generating ISDN calls, you must set the call type to either voice call or data call.

Perform the following configuration in dialer interface or ISDN interface view.

Table 226 Configure an interface for voice calls

Operation	Command
Configure an interface to initiate connection using voice	dialer data2voice
calls
Configure the interface to initiate connection using data	undo dialer data2voice
calls

2Configure Call Processing Method on an Interface

On an interface receiving ISDN calls, you can configure it to process calls as either voice calls or data calls. Regardless of how it processes a call, however, the packets transmitted over the established connection are data packets.

Perform the following configuration in ISDN interface view.

Table 227 Configure an interface to receive voice calls

Operation	Command
Configure an interface to process the received calls as	Isdn	voice2data
voice calls
Configure the interface to process the received calls as	undo	isdn voice2data
data calls

Display and Debug

ISDN

Perform the display and debugging commands in all views.

Table 228 Display and debug ISDN

Operation	Command
Display the current activated call	display isdn active-channel [
information of ISDN interface	interface type number ]
Display the value of ISDN DSS1 signaling	display isdn q931-timer
timer
Display the value of ISDN QSIG signaling	display isdn qsig-timer [ interface
timer	type number ]
Display the current status of ISDN interface	display isdn call-info [ interface
	type number ]
Enable the debugging of ISDN CC	debugging isdn cc [ interface type
	number ]
Enable the debugging of ISDN q921	debugging isdn q921 [ interface
protocol	type number ]
Enable the debugging of ISDN q931	debugging isdn q931 [ interface
protocol	type number ]