TD 92579EN
15 February 2012 / Ver. H
Installation and Operation Manual
IP-DECT Base Station & IP-DECT Gateway (software version 5.0.x)
110
8.10.5 Air Sync
This section only applies to the IPBS.
Air Sync st
atus is displayed in the Device Overview > Air Sync menu. For explanation on
the information shown for the active and the alternative sync bearers, see the table below.
Figure 27.
RFPI Radio Fixed Part Identity is the Id number of the sync bearer.
Carrier The carrier used for air synchronization
Slot The slot used for air synchronization
Hop The number of hops from the Sync Master to the sync bearer
RSSI Received Signal Strength Indication
FER Frame Error Rate, a value between 0 and 100%. Should be
below
80% to be able to keep the synchronization.
8.10.6 Sync Lost Counter in IPBS
This section will describe briefly the different situations whe
n the “sync lost counter” is
incremented and what impact it has for the users.
Sync Lost Counter
When an IPBS increments the syn
c lost counter it means that the IPBS stops to handle all
radio traffic for a while and after that restarts the synchronization procedure. The radio
part is not really restarted but out of service for a short time period. The IP-part of the IPBS
is not affected by this but is in service all the time.
There are five reasons for when the sync lost counter is incremented:
• The IPBS has not been able to find a syn
chronization source within 9 minutes.
• The PSCN value is changed.
• The value for frame number is changed.
• The value for multi frame number is changed.
• The number of enabled carriers is changed.
If the PSCN, frame number, multi fra
me number and/or the number of enabled carriers is
changed, then the radio stops to handle traffic immediately.
Sync Offset The synchronization offset for the IPBL.
Cable Delay The delay caused by the cable.
Sync Lost Counter The number of times synchronization lost.
Communication The present status of communication.
Connected to The IP address of the IPBL connected.
Tx Error The number of transmitting errors.
Rx Error The number of receiving errors
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