Cisco Unified Wireless IP Phone 7925G Series Deployment Guide 15
-Answer a call
-End a call
-Volume Control
With Bluetooth Handsfree Profile (HFP) support, the following features can also be available if supported by the Bluetooth headset.
-Last Number Redial
-Call Waiting
-Divert / Reject
-3 way calling (Hold & Accept and Release & Accept)
For more information, refer to the documentation from the Bluetooth headset manufacturer.
Coexistence (802.11b/g + Bluetooth)
If using Coexistence where 802.11b/g and Bluetooth are used simultaneously, then there are some limitations and deployment
requirements to be considered as they both utilize the 2.4 GHz frequency.
Capacity
When using Coexistence (802.11b/g + Bluetooth), call capacity is reduced due to the utilization of CTS to protect the 802.11g
and Bluetooth transmissions.
Multicast Audio
Multicast audio from Push To Talk (PTT), Music on Hold (MMOH) and other applications are not supported when using
Coexistence.
Data Rate Configuration
It is recommended to only enable 802.11g (OFDM) data rates (i.e. > 12 Mbps) to prevent from engaging in CTS for 802.11g
protection when using Coexistence, which can impact voice quality.
Note: It is highly recommended to use 802.11a if using Bluetooth due to 802.11b/g and Bluetooth both utilizing 2.4 GHz, but
also due to the above limitations.
Wireless Security
When deploying a wireless LAN, security is essential.
The Cisco Unified Wireless IP Phone 7925G Series supports the following wireless security features.
Authentication
• WPA (802.1x authentication + TKIP encryption)
• WPA2 (802.1x authentication + AES encryption)
• WPA-PSK (Pre-Shared key + TKIP encryption)
• WPA2-PSK (Pre-Shared key + AES encryption)
• EAP-FAST (Extensible Authentication Protocol – Flexible Authentication via Secure Tunneling)
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