KN; Reviewed:
SPOC 9/21/2006
Solution & Interoperability Test Lab Application Notes
©2006 Avaya Inc. All Rights Reserved.
48 of 52
NT-SG_AppNote
Service Provider network to the extensions in the enterprise site, and calls originated in
the enterprise site to other participants through the SIP Service Provider network.
• Transferring incoming calls from the SIP Service Provider network to other participants
through the SIP Service Provider network, incoming calls from the SIP Service Provider
network to the extensions in the enterprise site, and calls originated in the enterprise site
to other participants through the SIP Service Provider network.
• Conferencing with the extensions and other participants through the SIP Service Provider
network.
• CLIP and CLIR.
6.2. Test Results
All test cases passed. The following issues were noted.
1. The Hitachi NT-SG only supports the G.711 mu-law codec.
2. The Hitachi NT-SG only supports the udp protocol.
7. Verification Steps
This section provides verification steps that may be performed in the field to verify and that the
endpoints can place outbound and receive inbound the SIP Service Provider network through the
Hitachi NT-SG.
1. Verify that endpoints at the enterprise site can place calls to the SIP Service Provider
network and that the call remains active for more than the session refresh timer value of the
SIP Service Provider network. This time period is included to verify that proper routing of
the SIP messaging has satisfied SIP protocol timers.
2. Verify that endpoints at the enterprise site can receive calls from the SIP Service Provider
network and that the call can remain active for more than the session refresh timer value of
the SIP Service Provider network.
3. Verify that the user behind the SIP Service Provider network (e.g. the user of a wireline
telephone SIP Service Provider, mobile communications SIP Service Provider, or SIP
telephony service provider) can terminate an active call by hanging up.
4. Verify that an endpoint at the enterprise site can terminate an active call by hanging up.
8. Support
For technical support on the Hitachi NT-SG, visit http://www.hitachi-com.com/.
9. Conclusion
These Application Notes describe the configuration steps required to connect an enterprise site
consisting of an Avaya SIP-based telephony solution to a SIP Service Provider network via the
Hitachi Communication Technologies NT-SG. The Avaya SIP-based telephony solution with the
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