D-Link DSL-2750B rev T1

bgn (N300)
ADSL2 Modem Router
Wikipedia	D-Link
WikiDevi.wi-cat.ru	D-Link DSL-2750B rev T1
3rd Party Firmware
dd-wrt	Status Unknown
OpenWrt	Partial Support
Tomato any flavor	Status Unknown
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	D-Link DSL-2750B T1
FCC ID	KA2SL2750UT1
US ID	3P7DL01BSL2750UT1
Type	wireless router, dsl modem
CPU1	Broadcom BCM63281
CPU1 Type	BMIPS4350
CPU1 Speed	320 MHz
Flash1 Chip	Macronix MX25L12845EMI-10G
Flash1 Size	16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br />
RAM1 Size	64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br />
RAM1 Chip	SK hynix H5PS5162GFR-S5C
ETH chip1	Broadcom BCM63281
Switch	Broadcom BCM63281
Ethernet Port Count	4-100MbE-LAN
Wired Standard	IEEE 802.3i/3u
802dot11 OUI: 28:10:7B (5 E, 2 W), B8:A3:86 (7 E, 6 W), CC:B2:55 (3 E, 3 W) Ethernet OUI: 28:10:7B (5 E, 2 W), B8:A3:86 (7 E, 6 W), CC:B2:55 (3 E, 3 W)
Stock bootloader	CFE 1.0.37-110.11
Stock FW OS	Linux 2.6.21.5 OpenRG
Expansion IF types	USB 2.0
USB ports	1
USB Hub Compatible	Untested
Power	12 VDC, 1 A
Connector type	barrel
Serial Port (UART)	yes, internal, 4-pin header, (115200 8N1)
Flags: ADSL2+
Additional chips DSL (ADSL2+) Line Driver;Broadcom;BCM6301;BROADCOM, 6301KSG, TD1122P1;1;
Other
Default SSID: 28107bXXXXXX , b8a386XXXXXX , ccb255XXXXXX Default IP address: 192.168.1.1 the IP 192.168.1.1 is used by 1326 additional devices of which 31 are D-Link devices Default login user: admin Default login password: randomly generated admin:randomly generated credentials used by 28 additional devices of which 0 are D-Link devices
Manuf/OEM/ODM	SGE Gan5.CT02W
3rd Party Firmware Support	OpenWrt • (List | Dev | DLs)
Retail
Availability	End of Life
FCC approval date	30 September 2011
Country of manuf	China
Radio 1
Chip1	Broadcom BCM43225
Wireless interface OUI	28:10:7B, B8:A3:86, CC:B2:55
Antenna Connector Type	none specified
MIMO status	2x2:2
Wireless Standard	IEEE 802.11b/g/n
802.11n	up to 300 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz

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

For a list of all currently documented D-Link device with specifications, see D-Link.

• 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = N300 class

Overview

This modem has been used by Verizon.

"GAN5.CT02W-B_2T2R", "REV1.0", and "005SP0439640A" appears to be silkscreened on the board in the FCC photos. The default SSID pattern appears to be the MAC address (no delimiters, lower case hex letters).

Links of Interest

Reviews

• D-Link DSL-2750B on InsideGadgets

Technical Data

• D-Link DSL-2750B rev T1 on OpenWRT

Flashing

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
OpenWrt Target: bcm63xx
OpenWrt Subtarget: generic
OpenWrt Package architecture: mips_mips32
Support started version: 17.01.0
Current supported version: 22.03.7
Unsupported Functions:
DSL modem

Please insert instructions here

JTAG-Serial Info

Serial

Serial Pinouts

The serial header is populated on this device - it is J6.

J6
(RxD) (GND) (TxD) (3.3)
Pin4  Pin3  Pin2  Pin1
        |
        /\
to WI <    > to SoC

General

The username and password (at least @ stock) would appear to be identical

to the HTTP admin ones.. which are printed on the unit's label.

The firmware used is presumably Jungo's OpenRG, or a derivative.

Derived info

/Serial info - Needs to be condensed before inclusion

Pictures

User Images

• internal
• 

  board top

• 

  central board portion

• 

  BCM43225 Wi-Fi IC

• 

  Flash + BCM6301

• 

  board, DSL section

• 

  board, power section