Ericsson Counter : Dropped Calls
TFNDROP : The total number of
dropped full-rate TCH in underlaid subcell. The counter is also available for
half-rate and for overlaid subcells, e.g. THNDROPSUB.
TFNCEDROP : The total number of
dropped full rate TCH connections in underlaid subcell that occur when a
subscriber to subscriber connection has already been established. The
establishment of subscriber to subscriber connection is assured if the
connection is
dropped between the DTAP messages CONNECT ACKNOWLEDGE and RELEASE or DISCONNECT
(whichever of RELEASE or DISCONNECT comes first).
TFDISTA : Total number of
dropped full-rate TCH connections at excessive TA. Also available for
half-rate, e.g. THDISTA.
TFDISSSUL : Total number of
dropped full-rate TCH connection at low signal strength on uplink in underlaid
subcell i.e. below LOWSSUL. Different combinations for overlaid subcell,
up/down and both-way link and half-rate, e.g. THDISSSBLSUBis the signal strength drop counter for
half-rate, both links in overlaid subcell. If both links have low signal
strength, only the both link counters are stepped.
TFDISFERUL : Total number of
dropped full-rate TCH connections at high FER on uplink in underlaid subcell
i.e. worse than (above) HIGHFERULFR. Different combinations for overlaid
subcell, up/down and both-way link and codec, e.g. THDISFERBLSUB is the
bad quality drop counter
for half-rate, both links in overlaid subcell. If both links have bad quality,
only the both link counters are stepped.
TFDISQAUL : Total number of
dropped TCH connection due to bad quality based on RXQUAL on uplink in underlaid subcell i.e. worse than (above) BADQUL. Different combinations for
overlaid subcell, up/down and bothway link and half-rate, e.g. THDISQABLSUBis the
bad quality drop counter for half-rate, both links in overlaid subcell. If both
links have bad quality, only the both link counters are stepped.
TFSUDLOS : Sudden loss of
connection in underlaid subcell. Sudden loss apply when the locating algorithm
indicates missing measurement results, but none of the urgency conditions
mentioned above (that is excessive TA, low signal strength, high FER or bad
quality) apply. The counter is also available for half-rate and for overlaid subcells,
e.g. THSUDLOSSUB.
T_DR_BQ : The rate of TCH
drops at bad quality on either uplink, downlink or both for the whole cell.
T_DR_FER : The rate of TCH
drops at high FER on either uplink, downlink or both for the whole cell.
T_DR_TA : The rate of TCH
drops due to excessive Timing Advance for the whole cell.
T_DR_SUD : The rate of TCH drops
due to sudden loss of the connection for the whole cell.
T_DR_OTH : The rate of TCH
drops due to other reasons than the above known reasons.
TFDISTAA : Total number of
dropped AMR full-rate TCH connections at excessive TA. Also available for
half-rate, e.g. THDISTAA .
TFDISSULA : Total number of
dropped AMR full-rate TCH connections due to low signal strength on uplink in
underlaid subcell i.e. below LOWSSUL. Different combinations for overlaid
subcell, up/down/both links and half-rate, e.g. THDISSBLSUBAis the
signal strength drop counter for AMR
half-rate, both links in overlaid subcell. If both links have low signal
strength, only the both link counters are stepped.
TFDISFERULA : Total
number of dropped AMR full rate TCH connections at high FER on uplink in
underlaid subcell. Different combinations for overlaid subcell, up/down and both-way
link and codec, e.g. THDISFERBLSUBA is the bad quality drop counter for AMR half-rate, both links in
overlaid subcell. If both links have bad quality, only the both link counters
are stepped.
TFDISQAULA : Total number of
dropped AMR full-rate TCH connections at bad quality on uplink in underlaid
subcell. Different combinations for overlaid subcell, up/down/both links and
half-rate, e.g. THDISQABLSUBAis the bad quality drop counter for AMR half-rate, both links in
overlaid subcell. If both links have bad quality, only the both link counters
are stepped.
TFSUDLOSA : Sudden loss of AMR
full-rate connection in underlaid subcell. Sudden loss apply when the locating
algorithm indicates missing measurement results, but none of the urgency
conditions mentioned above (that is excessive TA, low signal strength, high FER
or bad quality) apply. The counter is also available for AMR half-rate and for overlaid
subcells, e.g. THSUDLOSSUBA.
Read Also other
topis : Ericsson Counter: Call Attempts, Drops on SDCCH, Congestion, Paging, Handover, Speech Quality, Intra-Cell Handover, OL/UL Subcell
