Configuration based on IMEI

[hellkaim]

Hi,
The original chan dongle has an option where I can specify a modem IMEI as a reference for dongleX assignment.

[dongle2] imei=358711037755485

If defined in such a manner ttyUSB devices are selected automatically for a given modem.

It is very useful if more then 1 modem is connected to the system and prevents mess with ttyUSB devs after reboot. It well may happen that during initialization ttyUSB devices will have different numbers then on previous boot. Yes, it may be solved with manual udev configuration but hey ))
IMEI identity helps sorting things out easily.

Could you add similar functionality to the code so that I as an admin can define 1 universal sign and the rest will be handled by the chan code? It is ok if the UAC config should be done manually in case used but we can discuss that.

My personal issue is that I am at no way a programmer and even if I can locate the code responsible for that in the original chan dongle code base I will be unable to change it properly ((

[IchthysMaranatha]

I've not tested it, but I don't think Quectel and Simcom modems will support that. Even for chan_dongle it works only with certain Huawei models.

[hellkaim]

Ok, so the only way to handle several devices is to somehow hardcore them in udev rules?

[IchthysMaranatha]

I think so

[IchthysMaranatha]

I've tested out the imei/imsi discovery and got it working. Will update code in some time.

[hellkaim]

Hi, pulled a fresh copy, compiled and no - it seems it can't discover modems by IMIE ((

[hellkaim]

to be exact:
[Oct 26 17:01:55] ERROR[2074]: dc_config.c:57 dc_uconfig_fill: Skipping device quectel0. Missing required audio setting [Oct 26 17:01:55] ERROR[2074]: dc_config.c:57 dc_uconfig_fill: Skipping device quectel1. Missing required audio setting [Oct 26 17:01:55] ERROR[2074]: dc_config.c:57 dc_uconfig_fill: Skipping device quectel2. Missing required audio setting

So it seems to find the modem, but my EG25-G does produce 4 devices. I am unable to find the way to disable wwanX devices but even if I can there will be 1 spare left. SO what I did I made a normal config using data & audio and it seem to work (well calls are not passing through at the moment, but anyway and I think it is die to the power issues).

[IchthysMaranatha]

For discovery, check the vendor id and product id and add a row after this if different from ec25 (2c7c, 0125) here https://github.com/IchthysMaranatha/asterisk-chan-quectel/blob/b3534eaedce52819ee3f61db6d191ed35177b955/pdiscovery.c
Your problem seems to be urc as mentioned before also when using serial audio, ttyusb3 is modem port which also accepts at commands but does not receive urc by default. ttyusb2 is the usbat port, try with that. Make sure gps is disabled on the shared audio port.

[hellkaim]

P.S.S And for all Quectel EC25G command guides please check this GitHub collection

[MikasaGitHub]

hello ,Will asterisk be disconnected if multiple devices call different people at the same time and stay online?

[hellkaim]

@MikasaGitHub No, Asterisk will handle multiple calls just fine.
Think of modems as trunks (technically not correct but still).
The main issue is power thus, not Asterisk.

[hellkaim]

@MikasaGitHub more over, if your operator/plan/sim allows conferencing that is also possible.

[MikasaGitHub]

ok Thank you so much

[IchthysMaranatha]

Sorry, correct row link is

asterisk-chan-quectel/pdiscovery.c

Line 71 in b3534ea

{ 0x2c7c, 0x0125, { 2, 1, /* 0 */ } }, /* Quectel EC25 */