Mobile SIP

[telis]

Hi,

We have been evaluating the 3CX system and mobile VoIP in general for months and months now, almost a year, and we are still not getting there.

Has anyone used HP iPAQ 514 Voice Messenger with 3CX as a SIP client? Or any other Windows Mobile 6 device? We know about Fring but aren't interested in that. Also we really like a device in the Windows Mobile 6 Standard (Smartphone) format not the Windows Mobile 6 Professional (PDA/PocketPC) format, but maybe beggars can't be choosers.

We have tried the obviously non-Windows Noika N95 and got that sort working and also got the HTC S610 sort of working. We are not particularly interested in SIP over 3G/HSDPA (it will be a cold day in hell when that works) it's SIP over Wi-Fi that we are after, mainly for people roaming within their own offices to have their mobile ring when their desk phone does, but also for teleworkers. We aren't motivated by saving call charges, but that is a bonus, especially for overseas calls.

The N95 just about worked with 3CX, the quality was a bit poor but we didn't persevere since the battery life was so inadequate whilst using Wi-Fi. We are never going to sell these anyway since we want to use Windows Mobile (we need Exchange Integration and also .Net apps).

The HTC S620 worked with 3CX after using a horrible hack, quality not great. Microsoft has a Windows Mobile 6 SIP client (a very good one) but HTC don't put it in their ROMs (presumably to keep the operators happy). You can get the files for the SIP client from other ROMs and then after much fuss with XML files and registry settings make and receive SIP calls. It's great in that it's the same dialling interface as Windows Mobile, if you have a Wi-Fi connection it just sends the call over that instead. The trouble is battery life makes it unusable, and even more seriously for some reason any VoIP call will go over the internal speaker and not the earpiece speaker.

The HP iPAQ 514 Voice Messenger sort of slipped under our radar as a contender, has anyone got one or shall I just shell another £170 of the firms' money and find out whether it will work. The product web page and the reviews do seem to talk about how good the battery life is with Wi-Fi...

Regards,

Christopher Edwards,
Telis.

 

[iatit]

hi, have there been any more recent developments on this topic?

also very much interested.

thanks!

 

[leejor]

I've have the Zyxel 2000w v2, the Linksys WIP300 , the UtStarCom F3000 and the Hp iPaq 510.

I'm pretty sure all have be discontinued. the first 3 are dedicated SIP WiFi sets and have worked well with 3Cx from locations all over the world. One only does 802.11 b, one only g and one does both. The HP does not include STUN and is not meant to be used outside the local LAN that the PBX is running on, they tell you that in the documentation. It will register, but, most of the time will only give one way transmission.

I have has some issues with the sets maintaining registration if just left idle for a period of time, but because they are used primarily for outgoing calls it hasn't been a big issue. I'll have to shorten the registration time to see if that helps but many times the setting in the set itself are "overruled" by the PBX.

One of the big drawbacks is the lack of replacement batteries. There is no such thing as a standard generic phone battery so it may come down to having to rebuild one myself to keep these working in the future. All of the sets have advantages and disadvantages. One of the problems, that I've found when travelling is that without a browser built into the set you are out of luck using it at any "free" wifi hotspot that requires you to go through a "homepage" first.

 

[igor.snezhko]

I noticed that Nokia E51 has very good SIP client, but its battery has very short working time if you using Wi-Fi. Recently I connected my Eten communicator to 3CX. The sound was awful until I connected a headset.
But the best sound quality I have seen at Dlink DPH-540 http://www.dlink.com/products/?pid=485 Brilliant sound! But very outdated firmware :x