mounting/unpacking filesystem from firmware

[szt]

How can I mount or unpack cramfs image from T-MST14DEUC_2710.3 firmware?
I found cramfs image using binwalk and extract it:

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$ binwalk upgrade.msd

DECIMAL   	HEX       	DESCRIPTION
-------------------------------------------------------------------------------------------------------
122709283 	0x7506523 	TIFF image data, big-endian
183189474 	0xAEB3FE2 	CramFS filesystem, little endian size 601520335 version #2 sorted_dirs hole_support CRC 0xf1959aee, edition 4087060793, 1402001618 blocks, 2145595601 files  
804083766 	0x2FED5836	TIFF image data, big-endian
869479821 	0x33D3358D	Realtek firmware header (ROME bootloader) header version: 82, created: 10/111/10919, image size: -655580638 bytes, body checksum: 0xC4, header checksum: 0x79

$ dd if=upgrade.msd iflag=skip_bytes skip=183189474 of=crfs.bin

When I try "mount -o loop /home/user/crfs.bin /root/mnt" i got "cramfs: unsupported filesystem features" in "dmesg | tail"