Sip firmware Release 1 for ip phone 1140e administration

100
Emergency 911 - Operator control of disconnect
Dialing plan configuration
To allow operator control of disconnect during a 911 call, the IP Phone
1140E must identify a 911 callas soon as a 911 call is initiated. The IP
Phone E uses an emergency flag in the dialing plan to identify a call. When the dialing plan detects that an emergency number is dialed, it automatically switches to operator controlled disconnect mode when the call is answered. The dialing plan can have multiple emergency numbers.
Examples of an emergency flag in the dialing plan
(911)|(911)# &&sip:$$@$n;user=phone&&emergency
(4357)|(4357)# &sip:$$@$n;user=phone&&emergency
Characteristics of E calls
During an E call, the user:
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cannot make outgoing calls
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is not notified of incoming calls and cannot accept incoming calls.
Incoming calls receive a busy signal
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cannot transfer, join, or conference the E call, place the E call on hold, or park the E call
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cannot receive an incoming call
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cannot auto-retrieve a parked call and auto-retrieval of parked calls is not displayed
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cannot disconnect the E call. Only an E center or operator can disconnect the emergency call
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cannot change Audio Quality
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can reply to IM popups, which are operational during an E call
During an E call the keys function as follows:

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