Table 34: Digital Hardware Configuration Parameters: E1 - Pri_Net/Pri_Cpe - Grandstream Networks UCM6510 IP PBX User Manual

users can click on
group is needed.
Note:
Currently, the group configuration in digit trunks settings is to manage outbound routes only. It doesn't
control inbound routes. Therefore, if the users have configured multiple groups for the digital trunk, please
make sure the inbound routes for those groups have the same inbound rule configured. Otherwise,
inbound call using the digital trunk might not work properly.
The UCM6510 currently supports E1, T1 and J1 digital hardware type. When different signaling is selected
for E1, T1 or J1, the settings in basic options and advanced options will be different. The following tables
list all the settings to configure digital ports when selecting each signaling.

Table 34: Digital Hardware Configuration Parameters: E1 - PRI_NET/PRI_CPE

Basic Settings
Clock
LBO
RX Gain
TX Gain
Codec
Play Local RBT
Firmware Version 1.0.1.12
to add more groups. This is not necessary in most cases and only default
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, alaw will be used for E1.
This configured whether to play the ringback tone from local UCM6510 or
UCM6510 IP PBX User Manual Page 124 of 277