Just wanted to help out here as just when I was about to give up thinking this was an exercise in futility I got it to work. I came from Voipo also with a Grandstream HT702. I tried many iterations of settings but this is what eventually worked for me.
I upgraded the firmware to 1.0.10.3 obtained at the grandstream website.
Modified all settings according to the voip.ms wiki sample for the HT702
But then I changed the following settings:
Register Expiration to ‘5’
Local SIP Port: 42872
Local RTP Port: 10006 (the range in the voip.ms settings says 10001-20000, so I don’t know why the sample suggests 10000. Since the Grandstream says an even number I just randomly picked 10006. You can perhaps try other even numbers in that 10002-20000 range.)
Changed SIP Register Contact Header Uses to: WAN Address
Changed the Preferred DTMF Priority Order to:
RFC2833, SIP Info, In-Audio
Changed the Preferred Vocoder choices to:
PCMU, PCMA, G729, G723, G726-32, iLBC
I hope this helps someone. I have no idea if this is IP specific. I have Verizon Fios. Ultimately this is what worked for me to both receive and make calls.
No trouble with Voipo for years, voip.ms sucks in every way. No CS number odd.. cause their a phone company, first red flag they cant even get their own phones working. No messaging CS even though they say they do, lie. So in 2025 we have slow email support. Paid them and have not had a working phone ever since for weeks. Another “CEO” stealing money. I would try voiply or 1 voip just to get a number up and running in the mean time.
Have you been able to get any of your client’s devices working? Are you assisting people in their homes or are you trying to get former voipo equipment working remotely? Do you have your own voip.ms setup and is it working?
Community members are willing to help and have worked through many issues to get voipo’s obsolete equipment reset and working with voip.ms. If you have specific questions someone should be able to help with the hardware configurations.
We do apologize for the current initial experience as you know we have been helping a great number of requests coming from voipo , this is a great number so it has cause delay over our support team to reply back in a regular timely manner, if you have a ticket , please do share it with me so I can help further, you can also share with me your account details such as email associated with the account or userid . Thank you
I feel your frustration. Who knows what the “deal” was that went into the Voipo shutdown and the recommendation for voip.ms? Voipo stole $180 from me by erroneously charging me for additional years on a fax line several months in a row and by the time I noticed the charges on my cc statement it was too late to dispute them. I just wanted to retain my phone number and this still seemed to be the most cost effective way. I did manage to get it to work but I had to invest hours to get it done. My configuration changes are above in this post. Try them and see if it works for you.
Yeah, suffice it to say they kept charging until I was paid up through 2035. I never needed tech support from voipo after porting my number. I never received a reply when I asked for the money they overcharged me. But grousing won’t get my money back.
I was suspicious when such a company gave one week notice and recommended voip.ms but I did a little background checking to make sure the companies were separate and voip.ms was reputable.
I am glad they recommended voip.ms … it gave me a starting point. There are a lot of features I will never use, but I am glad to have the flexibility and price list that voip.ms offers.
I did the same, but I’m sure there was some sort of compensation in exchange for the recommendation. VOIPO had no inherent value even with the large customer base so as to just be sold. One of the things they mentioned was that credit card vendors stopped their ability to process charges or refunds. Given that and our experiences with overcharging it’s clear why that happened.
Me too. They are impossible to get support from. I signed up a month ago. I only have inbound calls. I cannot dial out. I sent them screen shots. They gave me back absurd responses. I asked for a quick phone call. They don’t reply.
We understand the situation, please note that we are undergoing a great amount of request still this is most likely causing the delay on response from our Support Team , please share with me the ticket number or account details in PM so I can verify further , thank you