Multi-Site Customer with ISP Included in SLC
--------------------------------------------

The Intersite Prefix (ISP) is included as the first digit of the site
code. Currently, VOSS-4-UC does not
support the ISP as a separate component for the Directory Number
construction. Without ISP in the DN, a CTI application such as Corporate
Directory feature has problems; the DN returned from the Corporate
Directory must be manually manipulated before a call can be placed. To
work around this issue, Cisco recommends that the ISP be included as the
first digit of a Site Location Code (SLC).

Site Customer with ISP in SLC

+--------------+--------------------+----------------+-------------------+
|              | Dialing Format     | Display Format | Notes             |
|              | (A-Party)          | (B-Party)      |                   |
+==============+====================+================+===================+
| Intra-Site   | * Extension (for   | * Extension    | Intra-Site Calls  |
| Dialing      |   example, 4321)   | * Site Code    | can be dialed as  |
|              | * Site Code +      |   +            | an extension or as|
|              |   Extension (for   |   Extension    | Site Code +       |
|              |   example,         |                | Extension.        |
|              |   81134321         |                | Similarly, the    |
|              |                    |                | calling party     |
|              |                    |                | number can be     |
|              |                    |                | displayed either  |
|              |                    |                | as an extension or|
|              |                    |                | as Site Code +    |
|              |                    |                | Extension         |
+--------------+--------------------+----------------+-------------------+
| Inter-Site   | Site Code +        | Site Code +    | The first part of |
| Dialing      | Extension (for     | Extension      | the Site Code is  |
|              | example, 82551234) |                | an ISP            |
+--------------+--------------------+----------------+-------------------+
| PSTN Dialing | * PSTN Prefix +    | * (PSTN        | There are several |
|              |   PSTN Number      |   Prefix) + NN | alternatives for  |
|              |   (for example,    | * (PSTN        | display. Some of  |
|              |   919722221234     |   Prefix) +    | the phones        |
|              | * E.164 Number     |   Local Number | support E.164     |
|              |   (for example,    | * E.164 Number | dialing (including|
|              |   +19722221234     |   (+CC NN)     | + sign). Some     |
|              |                    |                | customers prefer  |
|              |                    |                | to display the    |
|              |                    |                | number as it      |
|              |                    |                | would be dialed.  |
+--------------+--------------------+----------------+-------------------+
| DN Format    | Site Code +        |                | The DN format     |
|              | Extension (for     |                | applies to Cisco  |
|              | example, 81134321) |                | Unified           |
|              |                    |                | Communications    |
|              |                    |                | Manager, Cisco    |
|              |                    |                | Unified IM and    |
|              |                    |                | Presence Service, |
|              |                    |                | and Cisco Unity   |
|              |                    |                | Connection        |
+--------------+--------------------+----------------+-------------------+