To meet the requirements of displaying 8885550000 as the Caller ID for calls to 8005556666, while using the line DN as the Caller ID for all other calls, a Calling Party Transformation Pattern is the most appropriate solution. This approach ensures:
A calling party transformation pattern can be configured to match the specific calling numbers (e.g., 1234567XXX) and modify the outgoing caller ID to 8885550000 only for calls matching the specified pattern.
Setting the calling line ID presentation to "allowed" ensures the modified caller ID is sent to the called party.
Since the transformation pattern applies only to calls from 1234567XXX to 8005556666, other calls retain their default caller ID (the line DN).

To determine the maximum number of G.711 calls that can be supported over a link with a specific bandwidth allocation, we need to consider the bandwidth consumption of each G.711 call, including overhead.
1. G.711 Codec Bandwidth Requirements: A G.711 call requires 64 kbps for audio payload.
2. IP Packet Overhead: In addition to the audio payload, overhead from RTP (Real-Time Protocol), UDP, and IP headers must be considered. Including overhead, the bandwidth for a G).711 call increases to approximately 80 kbps per call.
3. Audio Bandwidth Available: The audio bandwidth for this link is 512 kbps.
4. Maximum Number of Calls: Divide the available audio bandwidth by the bandwidth required per G).711 call:

Since partial calls are not possible, the maximum is 6 calls.
By supporting 6 calls at 80 kbps each, the configuration ensures optimal use of the available 512 kbps audio bandwidth while adhering to the QoS limitations.