User's Manual

the numbers are mapped as intercom calls, some numbers are mapped as local Public
Switched
Telephone Network (PSTN) calls, and some numbers are mapped as public long-
distance calls.
The issue is that until the IP Deskphone itself can determine the type of call, no SIP INVITE
message is sent. This is where the dialing plan comes into effect. The call type is determined
by the dialing plan. Based on the rules defined in the dialing plan, once a match has been
identified, the IP Deskphone with SIP Software sends the invite without the need to press the
send key. This behavior closely matches the traditional PBX operation.
The IP Deskphone with SIP Software design places no restriction in the format of the SIP URI.
The dialing plan is a scheme to match the user experience with traditional PBX operation. It
does not restrict the type of URI that the user can use.
The IP Deskphone with SIP Software uses a dialing plan to recognize a call as an call when
it sends an INVITE. The dialing plan can have multiple emergency numbers. See the chapter
Emergency Services on page 175 for information on the handling of Emergency calls by the
IP Deskphone with SIP software.
An example of a dialing plan is provided below.
Configure the provisioning server
94 SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012
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