Table 28: Digital Hardware Configuration Parameters: T1/J1 – PRI_NET/PRI_CPE
Basic Settings
Clock
All E1/T1/J1 spans generate a clock signal on their transmit side. The parameter determines whether the clock signal from th
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 gateway system clo
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
slave to you.
Slave: The equipment at the far end of the E1/T1 link is the preferred source of the master clock.
Signaling
Chooses the signaling protocol that will be used on the digital port.
PRI: when one end is set to NET, the other end should be set to CPE
Data channel
Chooses the Data Channel for control.
The user can group multiple E1 lines with a single data channel.
SS7 Variant Select ITU, ANSI, or CHINA.
Originating
Point Code
Originating point code is used to identify the node originating the message, always provided by the operator/ISP.
ITU Format: decimal number.
ANSI & CHINA Format: decimal number or XXX-XXX-XXX.
Destination
Point Code
The destination point code is the address to send the message to, always provided by the operator/ISP.
ITU Format: decimal number.
ANSI & CHINA Format: decimal number or XXX-XXX-XXX.
First CIC
When Span Type is E1, ITU & CHINA Range: [0, 4065], ANSI Range: [0, 16353].
When Span Type is T1/J1, ITU & CHINA Range: [0,4072], ANSI Range: [0, 16360].
inband: use in-band tones to play busy or congestion signals to the other side. This is the default setting.
The interval that restarts idle channels.
Reset Interval The interval that restarts idle channels.
PRI Exclusive
This setting is used to set up the ChannelID in the SETUP message. If enabled, only the specified B channel can be used.
Otherwise, select one of the channels in the B channel. If you need to override the existing channels selection routine and
all PRI channels to be marked as exclusively selected, please enable it.
Facility Enable
If selected, the transmission of facility-based ISDN supplementary services (such as caller name from CPE over facility)
be enabled.
SETUP ACK
When receiving a remote “SETUP” SIP message, and the “Sending Complete” field is not included in it, the gateway wil
a “SETUP ACK” to request more information. This option should be used if a remote device has “SETUP ACK” support
issues.
Overlap Dial
Configure this option to send overlap digits. If enabled, the SETUP message can include some digits of the callee number
the rest of the digits can be sent using the INFORMATION message. If disabled, the callee number will be sent via SETU
message when all the digits are ready.
NSF
Some switches (AT&T especially) require network-specific facilities. Currently the supported values are “none”, “sdn”,
“megacom”, “tollfreemegacom”, “accunet”.
PROGRESS
If disabled, the pri incoming calls GXW450X to convert the PROGRESS message into ALERTING message and send it t
PRI trunk. This option is used to determine whether the peer supports the PROGRAMS message.
Enabled by Default.
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