Hi JW,
This is expected behaviour with Hunt Groups and personal Call Forward settings :( Here is a clip from a Cisco "Ask the Expert Event" that details this design;
Maulik from Cisco;
http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Expert%20Archive&topic=Voice%20and%20Video&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1dd7de97/41#selected_message
So, it is recommended to get you Hunt Group members to Log In/Log Out of the Hunt Group depending on their availability;
Agent Status Control
The Agent Status Control feature allows ephone-hunt-group agents to control whether their phones are in the ready or not-ready status. A phone in the ready status is available to receive calls from the hunt group. A phone in the not-ready status blocks calls from the hunt group. Agents should use the not-ready status for short breaks or other temporary interruptions during which they do not want to receive hunt-group calls.
Agents who put their phones into the not-ready status do not relinquish their slots in the hunt group list.
Agents use the HLog soft key or the DND soft key to put a phone into the not-ready status. When the HLog soft key is used to put a phone in the not-ready status, it does not receive hunt group calls but can receive other calls. If the DND soft key is used, the phone does not receive any calls until it is returned to the ready status. The HLog and DND soft keys toggle the feature: if the phone is in the ready status, pressing the key puts the phone in the not-ready status and vice-versa.
The DND soft key is visible on phones by default, but the HLog soft key must be enabled in the configuration using the hunt-group logout command, which has the following options:
HLog-Enables both an HLog soft key and a DND soft key on phones in the idle, seized, and connected call states. When you press the HLog soft key, the phone is changed from the ready to not-ready status or from the not-ready to ready status. When the phone is in the not-ready status, it does not receive calls from the hunt group, but it is still able to receive calls that do not come through the hunt group (calls that directly dial its extension). The DND soft key is also available to block all calls to the phone if that is the preferred behavior.
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/admin/configuration/guide/cmecover.html#wp1096472
You may also want to take advantage of this feature (Hunt Timeout);
The following example shows the configuration for an ephone hunt group for which the max-timeout command is also configured. using this configuration, if the second number is busy, the third extension, 1003, has only 13 seconds to answer (20 - 7 = 13) because the value for max-timeout command is 20 seconds.
ephone-hunt 3 peer
pilot 4200
list 1001, 1002, 1003
timeout 7, 9, 15
max-timeout 20 (in your case this would be 15)
final 4500
http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_t1ht.html#wp1104526
Hope this helps!
Rob
