AudioCodes Mediant 3000 User Manual page 347

User's Manual
For example, for a Tel-to-IP call with NPI/TON set as E164 National (values 1/2), the
device sends the following SIP INVITE URI:
sip:12365432;phone-context= na.e.164.nt.com
This is configured for entry 3 in the figure below. In the opposite direction (IP-to-Tel call), if
the incoming INVITE contains this 'phone-context' (e.g. "phone-context= na.e.164.nt.com"),
the NPI/TON of the called number in the outgoing Setup message is changed to E164
National.

To configure NPI/TON to SIP phone-context rules:
1. Open the Phone Context Table page (Configuration tab > VoIP menu > GW and IP
to IP submenu > Manipulations > Phone Context).
2. Configure the parameters as required. For a description of the parameters, see the
table below.
3. Click Submit to apply your changes.
4. To save the changes to flash memory, see 'Saving Configuration' on page 520.
Notes:
Parameter
Add Phone Context As
Prefix
[AddPhoneContextAsPre
fix]
NPI
[PhoneContext_Npi]
Version 6.6
Figure 23-5: Phone Context Table Page
•
You can configure multiple rows with the same NPI/TON or same SIP
'phone-context'. In such a configuration, a Tel-to-IP call uses the first
matching rule in the table.
•
The Phone Context table can also be configured using the table ini file
parameter, PhoneContext (see 'Number Manipulation Parameters' on
page 822).
Phone-Context Parameters Description
Determines whether the received SIP 'phone-context' parameter is
added as a prefix to the outgoing ISDN Setup message with called and
calling numbers.

[0] Disable (default)

[1] Enable
Defines the Number Plan Indicator (NPI).

[0] Unknown (default)

[1] E.164 Public

[9] Private
Description
347
23. Manipulation
Mediant 3000