IO-Power Technology Co., Ltd
1F,No.100, Jinzhu Rd., North Dist., Hsinchu City 30055, Taiwan
http://www.io-power.com.cn
e-mail:
Tel: +886 3 5429395 Fax: +886 3 5357297
Form No.
：
IOP-OAPA-001-001
14
/
14
Retention date
：
6Years
11. FAQ
Q: Why can't the phone is booted?
A: Please check battery. For example, connect the phone to charger and check whether the
charging is normal.
Then re-boot.
Q: Why can't I make phone calls?
A: 1. Make sure SIP server is correctly set and registered.
2. Make sure wireless network is correctly set and accessed to.
3. Check the numbers dialed.
Q: Why is there no network signal?
A: 1. Check the availability of usable AP.
2. Check the setting of AP, such as SSID, WEP key, etc.
3. Check whether correct working channels are set (default channels are 1, 6 and11).
Q: Why it is unable to roam?
A. The roaming function of IO-WPD-2409-D2 WiFi Phone is limited to APs with same SSID. If
you roam to AP coverage area with a different SSID, you shall re-set the user name and
password of SSID.
Q: How to improve the roaming effect of IO-WPD-2409-D2 WiFi Phone?
A: IO-WPD-2409-D2 WiFi Phone supports automatic roam. To optimize and improve the
roaming effect, take following measures in the design plan:
1. Set the IO-WPD-2409-D2 WiFi Phone to work in two non-adjacent channels (such as 1,6 or
1,11,etc.);
2. Set the IO-WPD-2409-D2 WiFi Phone to use static IP address.
Q: How to improve voice quality?
A: IO-WPD-2409-D2 WiFi Phone supports "push to talk". To optimize and improve voice quality,
take following measures in the design plan:
1. Control the number of talk groups within 2 under the same network, otherwise it may cause
network congestion and lower voice quality;
2. Set the AP parameter - DTIM to be 1.