Comprobada la frecuencia con uno que tira y estan iguales, te paso las diferencias que he visto entre uno y otro, haber si pillas el fallo por que yo ni lo huelo.
Esta es la version del Software del que furula:
Software Version: SB4200E-0.4.4.6-SCM00-NOSH
Hardware Version: 3
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.3


Y esta del que no tira


Software Version: SB4200-0.4.4.5-SCM01-NOSH-2.02
Hardware Version: 3
MIB Version: II
GUI Version: 1.0
VxWorks Version: 5.3
Como veras la unica diferencia esta en la version del Software

En el apartado de Signal este es esl que tira

Downstream Value
Frequency 626000000 Hz Locked
Signal to Noise Ratio 33 dB
QAM 256
Network Access Control Object ON
Power Level -5 dBmV The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

HFC MAC Address xxxxxxxxxxx


Upstream Value
Channel ID 2
Frequency 57999667 Hz Ranged
Ranging Service ID 526
Symbol Rate 2.560 Msym/s
Power Level 40 dBmV

Este el que no

Downstream Value
Frequency 368750000 Hz In Progress
Signal to Noise Ratio 24 dB
QAM 256
Network Access Control Object N/A
Power Level -7 dBmV The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

HFC MAC Address xxxxxxxxxxxxxxxxxx


Upstream Value
Channel ID 2
Frequency 0 Hz In Progress
Ranging Service ID 0
Symbol Rate 0.000 Msym/s
Power Level 0 dBmV
Como veras aqui hay varias

En Addresses

Datos del que va

Item Value
Serial Number xxxxxxxxxxxxxxxxxxxxxxxx
HFC IP Address aqui hay una IP
HFC MAC Address xxxxxxxxxxxxxxxxxx
Ethernet IP Address 192.168.100.1
Ethernet MAC Address
CM USB IP Address 192.168.100.1
CM USB MAC Address
CPE USB MAC Address
DHCP Information Duration: 935699 s
Time: 3600



# Known CPE MAC Address (Max 1) Status Learned


Datos del chungo


Item Value
Serial Number xxxxxxxxxxxxxxxxxxxxxx
HFC IP Address 0.0.0.0 Aqui como veras la IP esta a ceros mal royo me da
HFC MAC Address
Ethernet IP Address 192.168.100.1
Ethernet MAC Address
CM USB IP Address 192.168.100.1
CM USB MAC Address
CPE USB MAC Address
DHCP Information Duration: 0 s
Time: 0



# Known CPE MAC Address (Max N/A) Status

Enga haber si ves el fallo que esto ya es una cuestion de orgullo y si no pos nada gracias de nuevo por tu interes