Avaya 1230 Administration page 97

Dialing a telephone number on an IP Deskphone that supports SIP can be different than dialing a
number from a traditional telephone. SIP signaling is communicated through a SIP URI to get to the
far end. For example, you can key in the SIP address, jsmith@company_name.com to reach John
Smith. When the IP Deskphone with SIP Software receives this address, the dialing plan is
bypassed and the IP Deskphone uses the SIP URI to send a SIP INVITE to
jsmith@company_name.com (INVITE sip: jsmith@company_name.com).
Entering a SIP URI address, however, is inconvenient on an IP Deskphone with SIP Software. Also,
the user must explicitly press the Send key (or use some method to indicate the end of the URI) to
indicate the completion of the SIP address. This is not something that the user is accustomed to in a
traditional PBX environment.
The alternative is to use a URI where numbers are used to reach the far end. Using different access
codes, the IP Deskphone with SIP Software translates the digits entered into something that the
server can understand and remaps the number entered into different URIs. Some of 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
Services on page 217 for information on the handling of Emergency calls by the IP Deskphone with
SIP software.
The following is an example of a dialing plan.
/* ------------------------------------------- */
/* A simple dial plan
/* ------------------------------------------- */
$n="mycompany.com"
$t=300
%%
/* DIGITMAP: Operator call */
(0)|(0)#
/* DIGITMAP: Emergency call */
(911)|(911)#
/* DIGITMAP: Avaya Aura Feature Access Code, *nn */
(*x{2})|(*x{2})#
/* DIGITMAP: Private internal call, 4 digit extensions starting with 4 */
(4x{3})|(4x{3})#
March 2015
&& sip:$$@$n;user=phone
&& sip:$$@$n;user=phone
&& sip:$$@$n;user=phone
&& sip:$$@$n;user=phone
SIP Software for Avaya 1200 Series IP Deskphones-Administration
Comments? infodev@avaya.com
*/
&&
&& t=100|emergency
&& t=100
&&
Create the Dialing Plan file
Emergency
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