ADTRAN MP-118, MP-114 manual Number Normalization Examples

MP-11x & Microsoft Office Communications Server 2007

3.3.2.4.2Number Normalization Examples

Two examples are provided below for number normalization. The examples are based on the following assumptions: a PBX with prefix (local) number 333 and a 4-digit extension number that begins with the digit 1 (i.e., 1xxx); National area code 206; International code 1.

„Modifying E.164 Numbers to PBX Format for Outbound Calls: Outbound calls refer to calls made by Office Communications Server 2007 users (OCS clients) connected through IP to the Office Communications Server 2007.

1.Local calls within the PBX: The caller dials only the last four digits (e.g., 1212). Office Communications Server 2007 translates (normalizes) the phone number into an E.164 number format: +12063331212 (where +1 is the country code, 206 the local area code, and 333 the PBX prefix number). The gateway's Manipulation table is configured to send only the last four digits to the PBX (i.e., 1212).

2.National calls to the same area code: The caller dials 9 for an external line and then dials a 7-digit telephone number (e.g., 9-555-4321). Office Communications Server

2007 translates (normalizes) the phone number into an E.164 number format: +12065554321 (where +1 is the country code, 206 the local area code, 5554321 the phone number). The gateway's Manipulation table is configured to remove (strip) the first five digits and add 9 as a prefix to the remaining number. Therefore, the gateway sends the number 95554321 to the PBX, and then the PBX sends the number 5554321 to the PSTN.

3.National calls to a different area code: The caller dials 9 for an external line, the out- of-area code, and then a 7-digit telephone number (e.g., 9-503-331-1425). Office Communications Server 2007 translates (normalizes) the phone number into an E.164 number format: +15033311425 (where +1 is the international code, 503 the out-of area code, 3311425 the phone number). The gateway's Manipulation table is configured to remove (strip) the first two digits (i.e., +1), add then add 9 as a prefix to the remaining number. Therefore, the gateway sends the number 95033311425 to the PBX and then the PBX sends the number 5033311425 to the PSTN.

4.Making international calls: The caller dials 9 for an external line, the access code for international calls (e.g., 011 for the US), the country code (e.g., +44 for the UK), the area code (e.g., 1483), and then a 6-digit telephone number (e.g., 829827). Office Communications Server 2007 translates (normalizes) the phone number into an E.164 number format: +441483829827 (where +44 is the country code, 1483 the area code, 829827 the phone number). The gateway's Manipulation table is configured to remove the first digit (e.g., +), and add the external line digit (e.g., 9) and the access code for international calls (e.g., 011 for the US) as the prefix. Therefore, the gateway sends the number 9011441483829827 to the PBX and the PBX, in turn, sends the number 011441483829827 to the PSTN.

The configuration of the above scenarios is shown in the figure below:

Figure 3-13: Phone Number Manipulation Table for IPÆTel Calls

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Quick Installation Guide 26 Document #: LTRT-26301