Avaya IP Line Bedienungsanleitung PDF herunterladen (Seite 273)

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101

Configuration of IP telephony nodes using OTM 2.2 Page 273 of 770

IP Line Description, Installation, and Operation

2 Click the Codec Options sub-tab. See Figure 66 on page 275.

Up to four codecs can be selected.

Note: The T.38 Fax and G.711 Clear Channel Fax codecs are not

counted in this limit.

The G.711 codec type is mandatory and is automatically selected.

Voice activity detection

threshold

–20 to +10 dB –17 dB

Enable V.25 FAX/Modem

tone detection

checked or unchecked checked

Enable V.21 FAX tone

detection

checked or unchecked checked

FAX maximum rate 2400, 4800, 7200, 9600,

12000, 14400 bps

14400 bps

FAX playout nominal delay 0 – 300 ms 100 ms

FAX no activity timeout 10 – 32000 seconds 20 seconds

FAX packet size 20 – 48 bytes 30 bytes

Recommendation

Nortel Networks recommends that the system be configured with both

G.711 and G.729A if there is a possibility that IP Softphone 2050 could

be configured with the “I use a modem to connect to the network” check

box checked. If the node does not have G.729A and/or G.723

configured, IP Softphone 2050 users with that checkbox selected will

have calls blocked. (Note: This does not apply to the MVC 2050.)

For more information, refer to

IP Phones: Description, Installation, and

Operation

(553-3001-368) in the “Select Sound Devices tab” section.

Table 56

DSP parameters (Part 2 of 2)

Parameter Range Default value

1 2 ... 268 269 270 271 272 273 274 275 276 277 278 ... 771 772

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