Inter-Tel AXXESS Manual page 1178

Programming
® ®
INTER-TEL AXXESS
•
•
•
•
Page 6-328
MANUAL VERSION 11.0 – May 2008
SIP Gateway: At least one SIP gateway must exist at all times (even in a default sys-
tem) because it follows the model of a CO trunk group. To communicate with a SIP
gateway, the following fields must be programmed (this option is also located under
System\Trunk-Related Information\SIP Gateways.):
— SIP Trunks: Indicates the SIP gateway where SIP trunks are placed.
— IP Address: Indicates the IP address of the SIP gateway.
— Listening Port: Indicates the port on the CPC that the system listens to for SIP
messages. By default, this port is set to 5060 (standard SIP port).
— SIP Gateway Name: The SIP Gateway Name field provides the ability to put a
SIP gateway behind a NAT. Enter the gateway name that is programmed on the
SIP gateway itself. The default value is DEFAULT. If you attempt to set the SIP
Gateway Name to an empty string, the system displays an error message. To cor-
rectly inform the gateway where the SIP messages are originating from, you must
also program the System NAT IP Address field (see
NAT traversal and programming information, see NAT Traversal for IP Endpoints
on page F-14.
CP History (Used for diagnostic purposes only): Enables SIP message output in the CP
history file, which allows you to trace SIP trunk calls. The available output options are
Headers Only, No History, or Full History. By default, this field is set to Headers Only.
Language: Determines which language is used for the voice prompts and displays
when this trunk is used.
Receive and Transmit Gain: Allows gain control programming for trunks on an IPRC
that has been modified using the Gain Control Kit. All trunks, regardless of the board
they are on, will have default transmit and receive gains of 0 dB. If the trunk resides on
a board that does not support the gain control, the values are ignored. The range for the
Transmit or Receive gain is -16 dB to +12 dB.
page 6-267). For complete
Programming SIP Trunks