AudioCodes Mediant 1000B SBA - Modifying PBX, Local, and National Calls to E.164 Format for Inbound Calls

Installation & Maintenance Manual 184 Document #: LTRT-40111
Mediant 1000B SBA
The configuration of the above scenarios is shown in Figure 21-2.
Figure 21-2: Destination Phone Number Manipulation Table for IP

Tel Calls
21.1.2 Modifying PBX, Local, and National Calls to E.164 Format for
Inbound Calls
Inbound calls refer to calls received by Lync clients from the PBX / PSTN. Each entry is
described as follows:
1. Local Calls from the PBX / PSTN: The PBX user only dials a 4-digit extension number
of the Lync client (e.g., 1220). The Manipulation table is configured to normalize the
number into E.164 format and adds the prefix +1206333 to the extension number.
Therefore, the PSTN Gateway sends the number +12063331220 to Lync, which
relays the call to the Lync client.
2. National Calls with the Same Area Code: The PSTN user dials a 7-digit phone number
(e.g., 333-1220), which is received by the PSTN Gateway. The Manipulation table is
configured to normalize the number into E.164 format and adds the prefix +1206 to
the number. Therefore, the PSTN Gateway sends the number +12063331220 to Lync,
which relays the call to the Lync client.
3. National Calls from a Different Area Code: The PSTN user dials the national area
code and then a 7-digit phone number (e.g., 206-333-1220), which is received by the
PSTN Gateway. The Manipulation table is configured to normalize the number into
E.164 format and adds the prefix +1 to the number. Therefore, the PSTN Gateway
sends the number +12063331220 to Lync, which relays the call to the Lync client.
Note: Whether the area code is received by the PSTN Gateway depends on the
country's PSTN numbering rules.
4. International Calls: The PSTN international (overseas) caller dials the international
access and country code (e.g., 001 for the US), the national area code, and then a 7-
digit phone number (e.g., 206-333-1220), which is received by the PSTN Gateway.
The Manipulation table is configured to normalize the number into E.164 format, by
removing the first two digits (e.g., 00) and adding the prefix plus sign (+). Therefore,
the PSTN Gateway sends the number +12063331220 to Lync, which relays the call to
the Lync client.
Note: Whether the area code is received by the PSTN Gateway depends on the
country's PSTN numbering rules.