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derive a clock from an internal source rather than a received signal. The line is then a master
clock source.
5.
Select a Framing type. The two most common framing types for PRI/T1 lines are DF and ESF,
which are 12- and 24-frame formats, respectively. E1 lines can use one of three framing types:
doubleframe, multiframe with no CRC, or multiframe with CRC, with the most common being
multiframe CRC.
6.
Select a Line Coding type. Line coding specifies the nature of the signals that are used to
represent binary one and zero at the physical layer. Choices are Alternate Mark Inversion
(AMI) and Bipolar 8 Zero Substitution (B8ZS).
7.
Select a Signaling Method. The signaling method dictates how and where the call signaling is to
be carried. With Common Channel signaling, one of the 24 channels of the PRI frame is devoted
to call control messaging. With Robbed Bit method, 1 bit of each data channel is "robbed" in
order to carry the requisite signaling information.
8.
Select a Line Build Out value (in meters). No matter what the quality of the cabling employed
in a network, every line experiences some signal loss or degradation. The line build out
describes the degree of attenuation to be applied to the transmission signal in order to have the
correct signal levels and shape arrive at the receiver. Generally, the longer the line connecting
the CPE and the network equipment, the lower the line build out parameter, and therefore the
less the transmitted signal is attenuated.
9.
Select a TEI Negotiation scheme. This designates whether or not Automatic TEI Negotiation will
be used. Select Automatic TEI Negotiation (Auto) UNLESS this is a point-to-point NTT line.
10. If you select Non-Auto for the TEI Negotiation scheme, enter a TEI value. A TEI value of 0 is
normally correct for a point-to-point NTT line.
C
ONFIGURING
Configuring Template Physical Resources
SFVRA Configuration Manager
S
T
ITE
EMPLATES
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