A10/A11/A10W/A11W IP Phone User Manual
ATCOM TECHNOLOGY CO., LIMITED www.atcom.cn
2. Do Not Disturb: Select “Yes” or “No” to enable or disable DND (Do Not Disturb).When DND
enabled, all the incoming calls will be rejected. At this moment if Always Target or Busy Target
was set, all incoming calls will be forwarded to the targets preferentially.
3. DND Authorized Number: Set the DND authorized number.When the DND fuction opens,DND
authorized number calls will not be rejected.
4. Block Call ID: Select “Yes” here, Caller ID will be blocked, A10/A11/A10W/A11W will call others
5. Block Anonymous Call: Select “Yes” here, all anonymous call will be blocked,
A10/A11/A10W/A11W will reject all anonymous callers.
6. Auto Answer: Select “Yes” here, A10/A11/A10W/A11W will answer all incoming calls by speaker
7. Auto Answer Delay: Set the auto answer delay.Defauts to 0.
8. Call Waiting ： When A10/A11/A10W/A11W is on calling, and Call Waiting enabled , any new
incoming calls will not be rejected but ringback tone can be heard by the remote end. if Call
Waiting disabled, only one conversation will be available even multi-accounts have been
registered on A10/A11/A10W/A11W .
9. Block IP Call:Select “Yes” or “No” to enable or disable block ip call.
10. Send Key: Define the Send key as “#” key or “*”Key. Press “#” Key or “*”Key follow those phone
number you want to dial, then number will be dialed out immediately.
4.5.3 Voice
Echo Cancellation
1. VAD：Select “Yes” or “No” to enable or disable VAD (Voice Active Detection). If enable, RTP
packets will not be sent when A10/A11/A10W/A11W is mute.
2. CNG：Select “Yes” or “No” to enable or disable CNG (Comfort Noise Generator). If enable,
comfortable noise will be sent to the remote end to let it perceive the conversation is still
active when A10/A11/A10W/A11W is mute.
Jitter Buffer
A10/A11/A10W/A11W is able to buffer incoming voice packets to minimize out-of-order packet
arrival. This process is known as jitter buffer.
1. Type: Choose type of jitter buffer. When choose Fixed, the size of jitter buffer is fixed. When
choose Adaptive, the size of jitter buffer is the sum of Minimum Delay and the size of RTP
packets.
2. Min Delay: The minimum delay of the jitter buffer.
3. Max Delay: The maximum delay of the jitter buffer.
4. Normal Delay: This is used to set fixed jitter buffer which should be between Min Delay and
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