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technicolor TC8305C

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technicolor TC8305C Comcast 1.0
Availability: common

Manuf/OEM/ODM Askey PKE1331BP-D49

FCC approval date: 26 July 2012
Country of manuf.: China

Type: wireless router, cable modem, analog phone gateway


Power: 120 VAC ~ 60 Hz, 1.2 A
Connector type: C7P

CPU1: Broadcom BCM3383Z
FLA1: 64 MiB
67,108,864 B
524,288 Kib
65,536 KiB
512 Mib
0.0625 GiB
(STMicroelectronics NAND512W3A2ZN6)
FLA2: 1 MiB
1,048,576 B
8,192 Kib
1,024 KiB
8 Mib
9.765625e-4 GiB
(Macronix MX25L8008E)
RAM1: 128 MiB
134,217,728 B
1,048,576 Kib
131,072 KiB
1,024 Mib
0.125 GiB
(Micron MT41J64M16JT-15E:G)

Expansion IFs: USB 2.0
USB ports: 1

WI1 chip1: Broadcom BCM4331
WI1 802dot11 protocols: bgn
WI1 MIMO config: 3x3:3
WI1 antenna connector: none

ETH chip1: Broadcom BCM3383Z
Switch: Broadcom BCM53124S
LAN speed: 10/100/1000
LAN ports: 4


Flags: DOCSIS 3.0, battery

Default SSID: HOME-XXXX (3 addl. devices)
Default IP address:
the IP is used by 18 additional devices
of which 2 are technicolor devices
Default login user: admin
Default login password: password
admin:password credentials used by 301 additional devices
of which 0 are technicolor devices

802dot11 OUI: none specified

For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.

The FCC external photos indicate that this cable modem is used with Comcast's Xfinity service.

Comcast Wireless Gateway User Guide

Per the FCC internal photos...

  • the SoC used is a BCM3383ZKFEBG (BCM3383 / BCM3383Z)
  • the GbE Switch is a BCM53124SKMMLG (BCM53124 / BCM53124S)
  • the RAM appears to be a Micron 2DGI2 D9MNJ (B887).
  • The battery shown in the FCC external photos is a Getac
BP-B210N-21/2600 S (Li-ion, 7.4V 2600mAh, 19.24Wh).
1.2A rated, ~8 Watts or 14 VA at the wall synced with WiFi on, no traffic.
A new battery may be purchased for $35.00 plus taxes and a $5.95 shipping fee.
Existing customers are eligible to purchase a new battery, which will be sent
to your Comcast service address and will arrive in about 7-10 business days.
If you would like to order a battery, please call us at 1-888-972-1261.
If you are a Comcast Business Voice customer, please call 1-800-391-3000
for details about the Comcast Business Voice battery replacement program.

The FCC label shows the default SSID pattern is HOME-XXXX, which should be the usual Comcast modem-router default SSID.

Default settings are from Comcast's customer support page.

Interesting features:

  • This device has a built-in Mongoose HTTP web server running on port 8080 (, that presents
a graph and a UI allowing you to interact with the chips spectrum analyzer. Only Safari and Chrome are supported.
  • The setup Wizard seems to have a problem with <space> characters in a WPA2 PSK AES wi-fi password.


JTAG (JP1201)[edit]

Pin Function Pin Function
1 tRST 2 GND
9 TCK 10 GND