S-Series IP PBX Administrator Guide
47
·
AMI
Codec
Choose the codec for this trunk.
Echo Cancellation
This option enables or disables echo cancellation. The default is
checked.
D Channel
Set the channel used to carry control information and signaling
information.
When the Interface Type is E1, enter a channel number from 1 to
31.
When the Interface Type is T1 or J1, enter a channel number from 1
to 24.
Variant
Specify the SS7 Singalling variant. The options are:
·
ITU: 14 bits
·
ANSI: 24 bits
·
China: 24 bits
Link set
Define SS7 linkset numbers.
Network Indicator
Specify the network indicator according to the network environment.
SLC
Specify the Signaling Link Code.
OPC
Specify the Originating Point Code. This is generally assigned by
your carrier.
DPC
Specify the Destination Point Code. This is generally assigned by
your carrier.
Table 5-16 E&M Trunk Configuration Parameters
E&M Signaling
Trunk Name
Give this trunk a name to help you identify this trunk.
Interface Type
Specify the interface type according to the trunk specification.
Framing
Choose the frame format for this trunk.
When the Interface Type is E1, the options are:
·
Enable CRC4
·
Disable CRC4
CRC4 is a method of checking for errors in data transmitted on E1
trunk lines.
When the Interface Type is T1 or J1, the options are:
·
ESF
·
D4
Line Code
Choose the line code for this trunk.
When the interface Type is E1, the options are:
·
HDB3
·
AMI
When the Interface Type is T1 or J1, the options are:
·
B8ZS
·
AMI
