Table 25: Ports Config/Digital Hardware: Edit Digital Ports - Grandstream Networks UCM6510 User Manual

The following dialog shows the digital port configuration parameters. Click on "Show Advanced Options" to
view more options.
Span Type
Clock
Signaling
LBO
RX Gain
TX Gain
Codec
Advanced Options
Switch Type
Coding
CRC
Firmware Version 1.0.0.5

Table 25: Ports Config/Digital Hardware: Edit Digital Ports

Select the digital channel mode "E1", "T1" or "J1" (J1 is TBD).
All T1/E1 spans generate a clock signal on their transmit side. The
parameter determines whether the clock signal from the far end of the
T1/E1 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 link is the preferred
source of the master clock.
If the far end is set to "PRI_NET", this option should be set to
"PRI_CPE" on the UCM6510.
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 (PCMA) or ulaw (PCMU). The default code is alaw for E1
and ulaw for T1.
Select switch type.

euroisdn: EuroISDN (common in Europe)

national: National ISDN type 2 (common in the US)

dms100: Nortel DMS100

4ess: AT&T 4ESS

5ess: Lucent 5ESS

ni1: old national ISDN type 1

qsig: Q.SIG
For T1, select "ami" or "b8zs"; for E1, select "ami" or "hdb3".
For E1, select whether to use CRC4 or CRC6. For J1 (pending), CRC6
UCM6510 IP PBX User Manual Page 77 of 192