New cordless phone Chip - Page 1
Forum section: electronics / projects

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: February 27, 2018, 02:43:38 pm
content: Hi,I want to know if you know some new chips for making cordless phones, any suggestions are welcome! I have found some old parts, but they are useless for now because they are not manufactured any more, like the U3600BM

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 27, 2018, 03:59:26 pm
content: Pretty sure an ESP32 will be plenty.

author: daveshah
author_rank: Unknown
timestamp: February 27, 2018, 04:06:20 pm
content: Dialog Semi has a series of single-chip DECT phone solutions, but I doubt getting parts or full data would be easy.https://www.dialog-semiconductor.com/products/connectivity/voice-over-dect/single-chip-dect-cat-iq

author: richard.cs
author_rank: Super Contributor
timestamp: February 27, 2018, 09:29:37 pm
content: Just looked up the U3600BM, it looks like a pretty interesting device, but it seems to be truly gone, I couldn't see anywhere it could be purchased even in small quantities. I don't have any suggestions unfortunately, but if anyone comes up with one I'd be interested to hear about it.

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: February 27, 2018, 09:40:45 pm
content: Maybe theSIM900is something for you?

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: February 28, 2018, 06:08:24 am
content: Thanks for suggestions, ESP32 is way to high priced for the job and I agree it can do it.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: February 28, 2018, 06:37:33 am
content: I wonder what Chinese have to offer in this field, I think they certainly have some chips for this job.

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 28, 2018, 07:06:18 am
content: Quote from: ali_asadzadeh on February 28, 2018, 06:08:24 amHow about ESP8266? Can't think of anything cheaper if you want Wifi. There are lots of Bluetooth chips but that would make a Bluetooth speakerphone, not a VoIP phone.

author: frozenfrogz
author_rank: Frequent Contributor
timestamp: February 28, 2018, 08:46:22 am
content: If ESP is an option you might want to clarify your design needs.What exactly do you mean by "cordless phone"? GSM? VoIP? RF packet data?

author: richard.cs
author_rank: Super Contributor
timestamp: February 28, 2018, 09:37:59 am
content: Well the U3600BM he mentioned is an analogue chip for doing audio signal conditioning and FM TX/RX (with digital control only for tweaking settings). Usually used for cordless handsets for landline telephones, but they are now mostly (all?) using digital modulation schemes.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: February 28, 2018, 11:19:16 am
content: Thanks for the updates, RF packet data seems to be the cheapest option in here, VoIP is another option if we could do it cheaply too.

author: EllisNel
author_rank: Newbie
timestamp: March 01, 2018, 09:51:34 am
content: Quote from: ali_aseadzadeh on February 28, 2018, 11:19:16 amI'd be surprised if you could get VoIP cheaper than that. Please make sure to share the info if you get a good deal somewhere.