Techdata: Comtrend CT-5621

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

DSL will not work at all on devices with BCM63xx DSL chipset (due to unavailability of FLOSS driver for Broadcom chips). Consider this when choosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported.
See Broadcom DSL, Unsupported: DSL modem and Broadcom BCM63xx for details.

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Device Type:
Modem
Brand:
Comtrend
Model:
CT-5621
Availability:
Discontinued
Supported Since Commit:
https://git.lede-project.org/?p=source.git;a=commit;h=44e22cbd49deeb17e9033da8bc72059887acb92f
Supported Since Rel:
10.03
Supported Current Rel:
EOL
Unsupported Functions:
DSL Modem
Gluon support:
unknown
Target:
brcm63xx
Subtarget:
generic
Package architecture:
mips_mips32
Bootloader:
CFE
CPU:
Broadcom BCM6348
CPU Cores:
1
CPU MHz:
256
Flash MB:
4
RAM MB:
16
Ethernet 100M ports:
4
Ethernet 1Gbit ports:
-
Ethernet 2.5Gbit ports:
-
Ethernet 5Gbit ports:
-
Ethernet 10Gbit ports:
-
SFP ports:
-
SFP+ ports:
-
Switch:
Broadcom BCM5325
VLAN:
Yes
Modem:
ADSL2+
Comments network ports:
5
WLAN 2.4GHz:
-
WLAN 5.0GHz:
-
WLAN Comments:
No WLAN
WLAN driver:
none
Detachable Antennas:
-
Bluetooth:
-
miniPCI ports:
¿
USB ports:
Mod
SATA ports:
-
Video ports:
-
Audio ports:
-
Phone ports:
-
Serial:
Yes
Serial connection parameters:
¿
Serial connection voltage:
¿
JTAG:
Yes
LED count:
¿
Button count:
¿
GPIOs:
-
Power Supply:
¿
Outdoor:
No
OpenVPN performance:
¿
Wireguard performance:
¿
Device Page:
ct5621
Firmware OpenWrt Install URL:
https://downloads.openwrt.org/releases/19.07.10/targets/brcm63xx/generic/openwrt-19.07.10-brcm63xx-generic-CT-536_CT-5621-squashfs-cfe.bin
Firmware OpenWrt Upgrade URL:
https://downloads.openwrt.org/releases/19.07.10/targets/brcm63xx/generic/openwrt-19.07.10-brcm63xx-generic-CT-536_CT-5621-squashfs-cfe.bin
Installation method(s):
CFE web recovery, see devicepage
Recovery method(s):
CFE web recovery
Picture:
picture: genericrouter1.png
General nomenclature

Details

Conventions per characteristic

Details

  • Last modified: 2025/05/27 22:34
  • by kjoshj