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Plantronics Calisto P835-M

alaTest has collected and analyzed 19 reviews from magazines and websites. Reviewers really like the value for money and design. The size and usability are also appreciated, whereas some have doubts about the features and portability.

sound, usability, size, design, value for money

portability, features

We analyzed user and expert ratings, product age and more factors. Compared to other Cell phones the Plantronics Calisto P835-M is awarded an overall alaScore™ of 77/100 = Good quality.

Review analysis

(Based on 19 reviews)

Expert Reviews  

User Reviews  

Showing 6 review(s)

Expert Reviews User Reviews
Showing 1 - 6 of 6 Show Reviews: in English | in other languages (4)

Consumer review by:

Amazon review summary for Plantronics Calisto P835-M


alaTest has collected and analyzed 3 user reviews of Plantronics Calisto P835-M from The average user rating for this product is 4.0/5, compared to an average user rating of 3.8/5 for other Cell phones on

sound, comfort, microphone

100% of the reviews on give this product a positive rating.

This summary is based on the product: Plantronics Calisto P830-M Speakerphone

Consumer review by:

Read the compatibility list before buying.


Works great. But only if you use it with the supplied client list

I bought it thinking the keypad would default to a generic keyboard so you could try to use it with a generic SIP client ; But only the microphone and speaker work as an audio device with generic clients

Consumer review by:

Beta Tested This Phone


Excelent call quality with Skype!!! I enjoyed testing this product for Plantronics and getting to keep it as payment for being a Beta tester. if you have call quality issues with Skype this unit will do wonders making 99% of you calls sound like a...

Not being able to talk about it until it was made availble to the public they have other great products coming your way but I can't tell you, from the looks of the stand Plantronics did not address the issue with the stand? it was the #1 complaint...


Consumer review by:

very nice sound


Works very well for my dad, he was so happy he could talk to people on the phone, he bought the extrnal mic. People even can hear him now, becuse he talks so softly.

Ease of use,Easy To Setup,Sound quality

Speaker needs more volume

Consumer review by:

Plantronics Calisto P240M - USB VoIP phone


The Caliso device is a really nice concept. It allows the connection of multiple devices all to one location and has really good sound quality. This model allows the connection to an analog phone line, a bluetooth phone, and a connection via USB to a...

Consumer review by:



At first glance, this product seemed to be exactly what I was looking for, however, it unfortunately doesn't work and I'm returning mine.First, even though this product advertises it pairs with Bluetooth headsets, it wouldn't pair with my Plantronics...

Product Specifications


Built-in Camera: No
Cordless Phone Standard:Not Applicable
Display: No
Hands Free Functionality:No / Yes
Integrated Amplifier: No
LCD Display: No
Loudspeakers:No / Yes
Low Radiation: No
MMS Functionality: No
Mute Control: No
Noise Cancellation: No
Polyphonic Ringtones: No
SIM Reader: No
SMS Function: No
Sound System:Mono
Switchbox from Telephone to Headset: No
Video Phone: No
Volume Control: No


Bluetooth:No / Yes
Ethernet: No
ISDN Port: No


Backlight Illumination:Display Backlight / No
Number of Display Colours:Monochrome / Unknown

General Features

Compatibility:for 4 and more brands
Elderly Friendly Phone: No
Form factor:Over the Ear Headset
Product Type:Over the Ear Headset
Recording System:Not Applicable
System Phone: No
Type:1 Piece / 1 Piece Phone / 2 Piece Phone / Over the Ear

IP Telephony

H.323 VoIP-Protocol: No
IP Phone: Yes
SIP-Standard (Session Initiation Protocol): No


Display of Calling Number:No / Yes