Nortel 5399 User Manual page 95

Book A
Model 5399 Remote Access Concentrator Network Administrator's Guide for UNIX
Table B-35. Modem Statistic Objects (continued)
MIB Object Name
mdmStatRetrainReqReceived
mdmStatRRNReqSent
mdmStatRRNReqReceived
mdmStatRoundTripDelay
mdmStatFarEndEchoFreq
mdmStatFarEndEchoLevel
mdmStatChanFreqOffset
mdmStatOscFreqOffset
mdmStatSNR
Chapter 2 Simple Network Management Protocol (SNMP)
Description
The number of retrain requested received by
the modem from the remote modem for this
call.
The number of rate renegotiation requests
initiated by this modem. The RRN request
is initiated because of changes in the line
quality (good or bad). Renegotiation is done
typically to make a quick change in speed
(up or down.)
The number of rate renegotiation requests
initiated by the remote modem. The RRN
request is initiated because of changes in
the line quality (good or bad).
Renegotiation is done typically to make a
quick change in speed (up or down.)
Round trip delay, in milliseconds, for this
call.
The far end echo frequency offset. This
object along with the object
mdmStatRoundTripDelay, gives the echo
characteristics of the call.
Far end echo level in decibels (db). The
number represents the negative decibels.
Channel frequency offset in Hertz.
Oscillator frequency offset in Parts Per
Million (PPM).
Signal to noise ratio expressed in decibels
(db). (0 db to -80 db) An SNR of 0 db is the
worst quality, while -80 db is the best.
Typical values should be -32 db to -38 db.
A-91