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Chapter 30 Outbound Trunk Group
ISG50 User’s Guide
486
30.2.2 SIP Auto Attendant and DDI Setup
Use this screen to select which auto-attendant should be used with this outbound line group. See
Chapter 31 on page 503 for information on configuring auto-attendants. You can also configure
Codec Setting Select the type of voice coder/decoder (codec) that you want this extension to use when
communicating with the ISG50. The following codecs (shown in highest quality to lowest
quality order) are supported by the ISG50:
• G.711 alaw (typically used in Europe)
• G.711 ulaw (typically used in North America and Japan)
• G.729
• G.722
• G.723.1
• G.726
See Voice Codecs on page 475 for more information.
When two SIP devices start a SIP session, they must agree on a codec.
If these SIP extensions are assigned to videophones, you must specify the video codecs
used for video calls. The ISG50 allows the following video codecs to pass through:
• H.261
• H.263
• H.264
• MP4
See Video Codecs on page 475 for more information on video codecs.
Codec Pool
This column indicates the codec types not used for these extensions. You can add a codec
type to be used for these extensions by highlighting it and clicking the Right button.
Codec List
This column indicates the codec types used by these extensions. You can organize the
priority of the codecs by highlighting it and clicking the Up or Down buttons to move the
codec higher or lower in priority. The SIP extensions attempt to use the higher priority
codecs first and try the lower priority codecs next. You can remove a codec type from
being used from these extension by highlighting it and clicking the Left button.
Apply
Click this to save your changes.
Cancel Click this to set every field in this screen to its last-saved value.
Table 166 SIP Trunk Add/Edit (continued)
LABEL DESCRIPTION