Nokia Pop-Port

Pop-Port connector of an original Nokia HS-5 headset.

The Pop-Port interface (originally code-named "Tomahawk"^{[citation needed]}) is a discontinued plug-in port, available with many Nokia mobile phones. The port consists of one metal pin on either end, and a plastic tab containing thirteen contacts.

Functions

The port contains signals for hands-free microphone, stereo speakers, FBus Rx/Tx or USB signals for the phones supporting them, power output for feeding the accessories that do not have their own batteries, and the Accessory Control Interface (ACI), a bidirectional serial control bus for connection and authentication of phone accessories, with a specific ASIC inside accessories and a proprietary protocol. It is also used to upgrade USB-enabled phones software using a specific USB data cable and the Nokia Software Updater.

Criticism

A common problem with Pop-port is that it's very easy for the contacts to lose connection, thus resulting in drop-outs in audio (when a hands-free is used) or an unstable data connection (when a USB cable is used). This is a common problem when listening to music from the phone while having the phone in a pocket. The movement of the pocket when walking causes the contacts to lose connection, thus resulting in drop-outs in audio, which is something the more stable 2.5mm and 3.5 mm audio sockets aren't prone to. Two common solutions to this problem is to have the "front" side of the phone facing the inner side of the pocket, or o use a stereo bluetooth headset.

Another issue is that the contacts are exposed to dust and dirt (more than the contacts of a TRS socket are) which, combined with the small size of the contacts, may make connection impossible in some cases.

Post-2007 phones

Nokia phones made since 2007 do not use Pop-Port. Instead they use mini-USB or micro-USB sockets for data services and a 4-part 2.5mm or 3.5mm "standard" audio TRS socket.^{[citation needed]} Some models also use microUSB for charging.

Available Pop-Port plug-ins

• Camera
• FM radio
• Headphones
• LCD display remote controller
• USB cable
• 3.5mm stereo plug adapter
• Flash
• 8P8C (RJ-45) cable (CA-41)
• CarKit

Similar connectors

A similar connector is the Sony Ericsson FastPort.

References

External links

• Nokia Pop-Port connector pinout nokia-tuning.net
• Nokia Pop-Port pinout pinouts.ru