Dynamic Transmit Power Control (Dtpc); Rugged Environments - Cisco 7925G Deployment Manual

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When using Coexistence (802.11b/g + Bluetooth), call capacity is reduced to the following:
Max # of Streams
4
7
Note: It is highly recommended to use 802.11a if using Bluetooth.

Dynamic Transmit Power Control (DTPC)

To ensure packets are exchanged successfully between the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G and
the access point, Dynamic Transmit Power Control (DTPC) should be enabled.
DTPC prevents one-way audio when RF traffic is heard in one direction only.
If the access point does not support DTPC, then the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G will use
the highest available transmit power depending on the current channel and data rate.
When using an access point that supports DTPC, set the client power to match the local access point power.
Do not use default setting of Max power for client power on Cisco Autonomous Access Points as that will not advertise DTPC
to the client.
The access point's radio transmit power should not have a transmit power greater than what the Cisco Unified Wireless IP
Phone 7925G, 7925G-EX, and 7926G can support.

Rugged Environments

When deploying the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, or 7926G in a rugged environment (e.g.
manufacturing, warehouse, retail), additional tuning on top of the standard design recommendations may be necessary.
Below are the key items to focus on when deploying a wireless LAN in a rugged environment.
Access Point and Antenna Selection
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide
802.11a or 802.11g + Bluetooth Disabled
802.11a or 802.11g + Bluetooth Disabled
802.11 Mode
802.11b/g + Bluetooth Enabled
802.11g + Bluetooth Enabled
12 Mbps
24-54 Mbps
Data Rate
11, <12-54> Mbps
12, <18-54> Mbps
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