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Command Reference Guide
Usage Examples
The following example sets the From header format to use a local IP:
(config)#ip sip grammar from host local
The following example sets the From header format to use calling party format on trunk T02:
(config)#ip sip grammar from user domestic T02
Technology Review
This technology review provides information about the E.164 recommendation for International numbering
plans and telephone number formats.
A fully specified telephone number can have a maximum of 15 digits, including country code, area code,
and the subscriber's number. These numbers usually consist of a + prefix. E.164 numbers exclude dialing
prefixes. The most familiar prefixes are international direct dialing (IDD) and national direct dialing (NDD).
In countries other than the USA, the IDD and NDD are represented by different numbers.
Additionally, E.123 describes the use of + to indicate a fully specified international number. The + is used in
SIP headers to provide consistency across national and international phone calls.
AOS products provide support for E.164 by being able to specify a country code and an IDD prefix.
National format telephone numbers are converted to international format by prefixing them with + and the
country code. On outbound international calls, + is substituted for the IDD. On incoming international calls,
the + is removed. If the country code matches the configured value, it too is removed.
Setting the From header to international will cause phone numbers to be formatted as
indicated by E.164. The country code must be configured, and the number must be of type
national for this feature to work successfully.
60000CRG0-35E
Copyright © 2012 ADTRAN, Inc.
Global Configuration Mode Command Set
1115
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