Table 37: Digital Hardware Configuration Parameters: T1/J1 - Pri_Net/Pri_Cpe - Grandstream Networks UCM6510 IP PBX User Manual

Double Answer
Accept On Offer
Skip Category
Charge Calls
Custom Options

Table 37: Digital Hardware Configuration Parameters: T1/J1 - PRI_NET/PRI_CPE

Basic Settings
Clock
LBO
RX Gain
TX Gain
Codec
Play Local RBT
Firmware Version 1.0.1.12
Some PBXs require a double-answer process to block collect calls. If users
have problem blocking collect calls using Group B signals, please try
enabling this option.
By default it's enabled. In most of cases, this option should be enabled.
If enabled, the callee side will request the caller to send caller category
before sending caller number.
Note:
"Get ANI First" and "Skip Category" cannot be enabled at the same time.
Whether or not report to the other end "accept call with charge". This
setting has no effect with most telecos. The default setting is enabled
(recommended).
Click on "Custom Options" button (on the right top of the configuration
dialog) and then user can customize desired tone and timer options
accordingly.
All E1/T1/J1 spans generate a clock signal on their transmit side. The
parameter determines whether the clock signal from the far end of the
E1/T1/J1 is used as the master source of clock timing. If the far end is used
as the master, the PBX system clock will synchronize to it.

Master: The port will never be used as a source of timing. This is
appropriate when you know the far end should always be a slave to
you.

Slave: The equipment at the far end of the E1/T1/J1 link is the
preferred source of the master clock.
The line build-out (LBO) is the distance between the operators and the
PBX. Please use the default value 0dB unless the distance is long.
Configure the RX gain for the receiving channel of digital port. The valid
range is from -24dB to +12dB.
Configure the TX Gain for the transmitting channel of digital port. The valid
range is -24dB to +12dB.
Select alaw or ulaw. If set to default, ulaw will be used for T1/J1.
This configured whether to play the ringback tone from local UCM6510 or
not. If enabled, the local UCM6510 will play ringback tone to the caller.
Otherwise, the caller will listen to the tone from peer device. The default
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