User's Manual

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GXW450X User Manual
Version 1.0.0.6
selected, please enable it.
Facility Enable
If selected, transmission of facility-
based ISDN supplementary services
(such as caller name from CPE over facility) will be enabled.
SETUP ACK
When receiving a remote "SETUP" SIP message,
and the "Sending
Complete" field is not included in it, the gateway will send a "SETUP ACK"
to request for 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, SETUP message
can include some digits of callee number, and rest of the digits can be
sent using INFORMATION message. If disabled, callee number will be
sent via SETUP message when all the digits are ready.
NSF
Some switches (AT&T espe
cially) require network specific facility.
Currently the supported values are "none", "sdn", "megacom",
"tollfreemegacom".
Table 23: Digital Hardware Configuration Parameters: E1 - SS7
Basic Settings
Clock
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 gateway system clock will synchronize to it.
• Master:
The port will never be used as a source of timing. This is
appropriate when you know 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.
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.
SS7 Variant
Select ITU, ANSI or CHINA.