A:AnswerJerks - The VTech CS5129-26 is designed to work with regular, residential, cable and VOIP lines. The telephone base only requires connection to an electrical outlet and a telephone jack/modem to function. Thank you! - VTech Support
A:AnswerMaggie - You can connect the VTech CS5129-26 on a different jack on the same line where the other Vtech phone is connected but the cordless handset from one base will not communicate with the handsets from another base. Also, please make sure that there is only one answering system assigned to take your messages. Thank you - VTech Support
A:AnswerHi - Our phones are designed to work with a traditional landline service. Regretfully, we do not have any telephone systems that operates on a VoLTE connection.
A:AnswerHi - Yes, the message window display on the VTech CS5129-26 remains 0 as long as there is no new recorded message in the answering system.
Thank you,
-VTech Support
A:AnswerBob - This cordless telephone operates with the maximum power allowed by the Federal Communications Commission (FCC). Even so, this handset and telephone base can communicate over only a certain distance - which can vary with the locations of the telephone base and handset, the weather, and the layout of your home or office.
A:AnswerRick - No, the VTech CS5129-26 does not have a connect to cell feature. If you want a phone that can be connected to cellphone via bluetooth, you may try the VTech DS6421-26 or the DS6621-2. Thank you! -VTech Support
A:AnswerHi - The compatible accessory cordless handset of the VTech CS5129-26 is the model CS5109-16. The telephone base supports a maximum of 5 cordless handsets. Thank you for your interest! - VTech Support
A:AnswerHi - Any other VTech standalone telephone will work as an extension as long as it is connected on a separate jack on the same line but this won't extend the range of the other base station. We do not have a range extender for the telephone system. Thank you for your interest! ~VTech Support