asterisk-chan-lantiq on AVM FRITZ!Box 7490 (Micron NAND): crash on install

Describe the bug

I'm trying to get asterisk to work with an analog line on a FRITZ!Box 7490 (Micron NAND); trying to stick to https://openwrt.org/docs/guide-user/services/voip/chan-lantiq.
As far as I've heard, chan is deprecated? Is there an alternative or is it the only way on this platform?

Trying to install asterisk-chan-lantiq seems to crash the router:

root@OpenWrt:~# opkg install asterisk-chan-lantiq
Installing asterisk-chan-lantiq (2021.09.11~2f029ec8-r4) to root...
Downloading https://downloads.openwrt.org/releases/24.10.5/targets/lantiq/xrx200/packages/asterisk-chan-lantiq_2021.09.11~2f029ec8-r4_mips_24kc.ipk
Installing kmod-ltq-tapi (6.6.119.3.13.0-r6) to root...
Downloading https://downloads.openwrt.org/releases/24.10.5/targets/lantiq/xrx200/kmods/6.6.119-1-edfe49a44601ddace14929ab941bea1e/kmod-ltq-tapi_6.6.119.3.13.0-r6_mips_24kc.ipk
Installing kmod-ltq-vmmc (6.6.119.1.9.0-r5) to root...
Downloading https://downloads.openwrt.org/releases/24.10.5/targets/lantiq/xrx200/kmods/6.6.119-1-edfe49a44601ddace14929ab941bea1e/kmod-ltq-vmmc_6.6.119.1.9.0-r5_mips_24kc.ipk
Configuring kmod-ltq-tapi

Here the ssh connection is lost/the xhr request fails on LuCi and the router comes online again later with a recent uptime.

Could it be an issue with the dts config/cmdline? Or something else?

To use FXS ports with e. g. Archer VR200v the kernel command line (bootargs) needs to be edited and a vmmc section must added to DTS file. Then FXS might probably work with chan-lantiq (not tested).

OpenWrt version

r29087-d9c5716d1d

OpenWrt release

24.10.5

OpenWrt target/subtarget

lantiq/xrx200

Device

AVM FRITZ!Box 7490 (Micron NAND)

Image kind

Official downloaded image

Steps to reproduce

No response

Actual behaviour

No response

Expected behaviour

No response

Additional info

No response

Diffconfig

Terms

• I am reporting an issue for OpenWrt, not an unsupported fork.

Start with the opkg installation transcript, especially configuration of kmod-ltq-tapi and installation of kmod-ltq-vmmc; inspect the FRITZ!Box 7490 lantiq/xrx200 DTS and bootargs mentioned in the report. Reproduce the crash and identify whether the package, kernel modules, or device-tree configuration causes it; done means installation no longer reboots the router or the incompatibility is documented.