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3.2 Trunk Group
Parameter
Default
Value Range
Description/Function
Reference
Parameter
Default
Value Range
Description/Function
Reference
Parameter
Default
Value Range
Description/Function
Reference
110
PBX Ringback Tone
Disable
1.
Enable
2.
Disable
Specifies whether or not the system sends a ringback tone to the
extension user who seizes an E1 digital trunk line.
(Available for E1 digital trunk lines only.)
Notes
• In some countries, the E1 card must not be connected to the
Public Switched Network.
• In case of the E1 digital trunk line, the Central Office does
not send a ringback tone to the caller.
• 1.3 System Features (F/G)
– E1 Carrier
Cyclic Signal Detection
Check
1.
No check [Disable]
2.
Check [Enable]
Used to disconnect the trunk line if the system detects a cyclic
signal during a CO-to-CO line call by DISA.
• 1.5 Attended Features (F/G)
– Direct Inward System Access (DISA)
Continuous Signal Detection
Check
1.
No check [Disable]
2.
Check [Enable]
Used to disconnect the trunk line if the system detects a continuous
signal during a CO-to-CO line call by DISA.
• 1.5 Attended Features (F/G)
– Direct Inward System Access (DISA)
Group
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