salix/modules/account/back/models/sip-config.js

const app = require('vn-loopback/server/server');

module.exports = Self => {
    Self.getLinker = async function() {
        return await Self.findOne({fields: ['id']});
    };

    Object.assign(Self.prototype, {
        async syncUser(userName, info, password) {
            if (!info.hasAccount || !password) return;

            await app.models.VnUser.rawSql('CALL pbx.sip_setPassword(?, ?)',
                [info.user.id, password]
            );
        }
    });
};