hmtsFwdHmtsFrequency

This is the frequency at which an HMTS transmits its FSK signal
on the HFC network, and only applies to RF ports. Other port
types should return noSuchName upon SNMP get or set commands.
              
When changing from one downstream frequency to another, an HMTS
should first transmit several CHNLDESC packets with the new
frequency as payload and modulated on the old frequency. This
will tell transponders to switch from the old to new frequency.
Next the HMTS must change its modulator from the old to the
new frequency.
              
In combination with the hmtsFwdXpndrFrequency variable, two
applications are possible:
- Tuning all transponders to a new frequency by first changing
  hmtsFwdXpndrFrequency and next setting hmtsFwdHmtsFrequency
  to the same frequency.
- Recovering transponders that missed a frequency transition,
  e.g. because they were disconnected at the time the CHNLDESC
  PDU's were transmitted. Recovery can be performed by setting
  hmtsFwdHmtsFrequency for a short time to the frequency at
  which the non-communicating transponders are listening.
              
Frequency transitions can be implemented in an HMTS e.g. in
one of the following ways:
1. Manual frequency transition: hmtsFwdHmtsFrequency and
   hmtsFwdXpndrFrequency can be set independently by an
   operator. Hence, both frequency transitions and recovering
   transponders is supported.
2. Automatic frequency transition: when hmtsFwdXpndrFrequency
   is set, and after the transition CHNLDESC PDU's have been
   sent, the HMTS also sets hmtsFwdHmtsFrequency to the new
   frequency. SNMP sets on hmtsFwdHmtsFrequency will result in
   a bad value error.
              
RESOLUTION: <=100 Hz
This object is non-volatile.

MIB

SCTE-HMS-HMTS-MIB

OID

.1.3.6.1.4.1.5591.1.11.3.2.1.2.5.1.6

Type

column

Access

readwrite

Status

current

Units

1 Hz

Parent

hmtsFwdPortEntry

Groups

1