ClearOne comm XAP 400 operation manual System Configuration ~ Telco Setup

56 System Configuration ~ Telco Setup

Feature	Description
Receive Reduction	This feature ducks receive audio coming in through the telephone line when transmit audio is
	present. This feature is typically used in applications where the transmit party needs control of
	the conversation. When activated, the receive audio is ducked by 6dB. Receive Reduction can
	be turned on or off. The default is off.
Auto Answer	The XAP 400 can be programmed to answer after one complete valid ring has been detected.
	The unit connects to the line automatically in the same manner it would connect if you
	issued a connect command. Auto Answer can be turned on or off. The default is off.
Receive ALC	Automatic Level Control (ALC) may be selected on the telco input. This feature is designed to
	keep soft and loud telephone participants at a consistent level. The parameters of ALC are not
	user adjustable. ALC can be turned on or off. The default setting is on.
Edit Speed Dial	The XAP 400 supports 10 speed dial numbers. Each number can be 40 digits long and can
	have a 20 character label associated with it. These numbers and labels are stored in non-
	volatile memory and the number can be called by a single command. Any valid touch-tone digit
	and the pause character (comma) may be stored. All speed dial numbers are empty except for
	number 9, which is programmed with Gentner's technical support number and number 10,
	which is programmed with the conference calling services number.
Hook Flash Duration	Hook Flash is supported by a single command. When the command is received, the unit will
	execute a flash for the duration programmed. Variable length Hook Flash is programmable on
	the unit. The on/off time is programmable from 50ms to 2 seconds in 10ms steps. The
	default is 250ms.
Telco Adaptation	In some applications, it may be desirable to adapt the hybrid with a white-noise burst rather
	than allowing the hybrid to adapt automatically to line conditions. This feature allows you to
	choose between Noise Burst and Auto Adapt. The default is Auto Adapt.
Receive Boost	The Receive Boost adds up to 12dB of gain (adjustable to 0, 3, 6, 9, or 12dB) to the receive
	signal delivered from the phone line. This is typically used for low-level telephone lines, allowing
	the signal to be boosted into a range where the hybrid can perform at an adequate level of
	acceptance. Receive Boost can be turned on or off (default). This feature is set up during the
	initial configuration and is not used to adjust level from call to call.
Auto Disconnect	The XAP 400 supports automatic disconnection of calls either from loop drop or from call
	progress tone detection. Auto Disconnect can be turned on (Loop + Call Progression, Call
	Progression, Loop) or off. The default is Loop, which is on.
Loop Drop + Call Progression	If either a call progress tone or loop drop/reversal is detected, the unit will perform a normal
	disconnect.
Call Progression	If a call progress tone is detected, the unit will perform a normal disconnect.
Loop	When a valid loop drop or reversal is detected, the unit will perform a normal disconnect. This is
	the default state.
DTMF Level	This feature allows you to adjust the DTMF tone level in relationship to the participant audio
	level in the room. The level can be adjusted in 1dB steps from a nominal level 0 (default) to plus
	or minus 12dB.
Dial Tone Level	This feature allows you to adjust the Dial Tone level in relationship to the participant audio level
	in the room. The level can be adjusted in 1dB steps from a nominal level 0 (default) to plus or
	minus 12dB.
Audible Hook Indication	When the unit goes off hook (connects) a beep is injected into the receive channel and
	transmit channel of the unit. When the unit goes on hook (disconnects), a series of 2 beeps is
	injected into the receive channel to indicate that the call has been dropped. This indicator can
	be turned on and off by selecting and deselecting the check box. The default is on. The level
	adjustment allows you to customize the level in relationship to the participant audio level in the
	room. The level can be adjusted in 1dB steps from a nominal level 0 (default) to plus or minus
	12dB.
Audible Ring	In the On mode, when a valid ring is detected the front panel LED flashes, a serial command is
	transmitted , and an audible ring is heard from the receive channel. In the Off mode, the front
	panel LED flashes and a serial command is transmitted, however, no ring tone is generated.
	This indicator can be turned on and off by selecting and deselecting the check box. The default
	is on. The level adjustment allows you to customize the level in relationship to the participant
	audio level in the room. The level can be adjusted in 1dB steps from a nominal level 0 (default)
	to plus or minus 12dB.

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