LV switch IPPBX8000, User Manual, Page: 151 / 199

LvSwitch IPPBX 8000 Manual
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6.5.3 PCM Settings
Select Voice config>>PBX settings>>PCM Config to open the page as 6-130.China adopts E1 standard,
the default is E1, which needs to be consistent with the opposite end.
<Usage situation>Tag
Figure 6-130 PCM Settings - Usage Situation
The "Usage Situation " interface is described as follows:
Table 6-52 PCM Settings - Usage Situation
name Function Description
Enable
Default is not enabled
。
When you need to use this interface, enable the
cable after docking
。
If the interface is not enabled and is only enabled on the
NMS, a fault alarm will be generated.
。
Channel rate
Select and set the slot rate
。
Optional 56kb/s, 64kb/s, default value
"64kb/s"
。
clock
External clock / internal clock
，
Default "external clock"
。
An external clock
is generally used when accessing the PSTN
。
When the upper-level office is
not connected, but only the lower-level office is connected, when the clock
refers to the local office, all clocks are internal clocks.
。
In general, an
external clock must be used to interface with the higher-level office.
frame
Optional CCS when PCM is E1(Common Channel Signaling)
，
CAS(Column Address Strobe)
，
Default "CCS"
。
Where PRI or SS7 relay uses "CCS"
，
R2 trunk uses "CAS"
。
Optional D4 for T1
，
ESF(Extended Super Frame)
，
Default "ESF"
。
This parameter must be negotiated with the peer.
。
Both parties must be
identical in interface parameters.
，
Inconsistent due to individual
characteristic parameters
，
No warnings on the indicator or alarm station
，
But it will cause data channel failure, error code, slip code, out of
synchronization, etc
。
Line coding
Optional AMI when PCM is E1(Alternate Mark Inversion)
，
HDB3(High-density Bipolar Three)
，
Default "HDB3"
。
Optional AMI for T1
，
B8ZS(Bipolar 8 Zeros Substitution)
，
Default
"B8ZS"
。
This parameter must be negotiated with the peer.