Does an AP listen to and send frames over one channel

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An AP receives or sends frames over one channel at one time.
- In Normal AP mode, an AP sends and receives frames over the configured channel.
- During neighbor detection, an AP sends probe request frames to all channels and receives probe response frames.
- In station mode, an AP listens to Beacon frames over all channels.

Other related questions:
How does a STA synchronize the channel when the associated AP switches to another channel
- If both the STA and AP support channel change notification, the AP sends an action frame (802.11h) to the STA after the AP switches to a channel. The action frame is used to notify the STA of switching the channel immediately or after n Beacon intervals

How to realize send digits one by one of IAD
IAD device can not be modified to achieve the number of bit by bit, you can switch on the soft voice gateway device on the function, you can refer to the following configuration open bitwise Report config modify digitmap protocol sip sendmapswitch on #config softargu type 282 value 1 // SIP without # is off by default IAD dial #config add digitmap protocol sip value x close bitwise Report config modify digitmap protocol sip sendmapswitch off #config softargu type 282 value 0 // SIP without # is off by default IAD dial #config delete digitmap protocol sip value x If the field IAD equipment is less, it is recommended to configure the SIP number on the IAD device. Specific configuration please refer to the corresponding model of the product documentation.

Can an AP (single radio) with different SSIDs work at different channels
An AP with different SSIDs cannot work at different channels. A radio has only one channel.

How does an AP adjust the rate
When signal quality becomes bad, an AP changes the modulation mode to reduce the transmission rate. This also reduces the bit error ratio.

Bytes in a frame structure used for the DCC channel in the optical regeneration section and bytes used for the DCC channel in the optical multiplexing section
Question: What are the bytes in a frame structure used for the DCC channel in the optical regeneration section? What are the bytes used for the DCC channel in the optical multiplexing section (OMS) to transmit network management information of a WDM system? Answer: According to SDH principles, bytes D1-D3 are used for the regeneration section, and bytes D4-D12 are used for the OMS section. In actual product application, however, bytes D1-D3 are used for DCC communication but bytes D4-D12 are not used.

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