84
3Com
®
VCX V7111 VoIP Gateway User Guide
•
Each coder can appear only once.
•
If not specified, the ptime gets a default value. The ptime specifies packetization
time the gateway expects to receive. The gateway always uses the ptime
requested by the remote side for sending RTP packets. Only the ptime of the
first coder in the list is declared in INVITE / 200 OK SDP, even if multiple coders
are defined.
•
If payload type is not specified, a default is used.
•
For G.729 it is also possible to select silence suppression without adaptations
•
If coder G.729 is selected and silence suppression disabled, the gateway
includes the string ‘annexb=no’ in the SDP of the relevant SIP messages. If
silence suppression is enabled or set to ‘Enable w/o Adaptations’, ‘annexb=yes’
is included.
Table 20
Supported Coders and their Attributes
Coder Name
Packetization Time
Rate
Payload
Type
Silence Suppression
G.711 A-law
[g711Alaw64k]
10, 20 (default), 30, 40,
50, 60, 80, 100, 120
Always 64
Always 8
Disable
[0]
Enable
[1]
G.711
μ
-law
[g711Ulaw64k]
10, 20 (default), 30, 40,
50, 60, 80, 100, 120
Always 64
Always 0
Disable
[0]
Enable
[1]
G.729
[g729]
10, 20 (default), 30, 40,
50, 60
Always 8
Always 18
Disable
[0]
Enable
[1]
Enable w/o Adaptations
[2]
G.723.1
[g7231]
30 (default), 60, 90
5.3 [0], 6.3 [1]
(default)
Always 4
Disable
[0]
Enable
[1]
G.726
[g726]
10, 20 (default), 30, 40,
50, 60, 80, 100, 120
16 [0], 24 [1],
32 [2]
(default), 40
[3]
Dynamic (0-
120)
Disable
[0]
Enable
[1]
T.38
[t38fax]
N/A N/A
N/A
N/A
G.711A-law_VBD
[g711AlawVbd]
10, 20 (default), 30, 40, 50,
60, 80, 100, 120
Always 64
Dynamic (0-
120)
N/A
G.711U-law_VBD
[g711UlawVbd]
10, 20 (default), 30, 40, 50,
60, 80, 100, 120
Always 64
Dynamic (0-
120)
N/A
Transparent N/A.
Summary of Contents for VCX V7111
Page 30: ...30 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 44: ...44 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 53: ...3Com VCX V7111 VoIP Gateway User Guide 53 Readers Notes ...
Page 54: ...54 3Com VCX V7111 VoIP Gateway User Guide ...
Page 211: ...3Com VCX V7111 VoIP Gateway User Guide 211 Figure 76 IP Connectivity Screen ...
Page 235: ...3Com VCX V7111 VoIP Gateway User Guide 235 Readers Notes ...
Page 236: ...236 3Com VCX V7111 VoIP Gateway User Guide ...
Page 240: ...240 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 245: ...3Com VCX V7111 VoIP Gateway User Guide 245 Readers Notes ...
Page 246: ...246 3Com VCX V7111 VoIP Gateway User Guide ...
Page 281: ...3Com VCX V7111 VoIP Gateway User Guide 281 Readers Notes ...
Page 282: ...282 3Com VCX V7111 VoIP Gateway User Guide ...
Page 298: ...298 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 315: ...3Com VCX V7111 VoIP Gateway User Guide 315 Readers Notes ...
Page 316: ...316 3Com VCX V7111 VoIP Gateway User Guide ...
Page 319: ...3Com VCX V7111 VoIP Gateway User Guide 319 Readers Notes ...
Page 320: ...320 3Com VCX V7111 VoIP Gateway User Guide ...
Page 346: ...346 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 351: ...3Com VCX V7111 VoIP Gateway User Guide 351 Readers Notes ...
Page 352: ...352 3Com VCX V7111 VoIP Gateway User Guide ...
Page 376: ...376 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 386: ...386 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 394: ...394 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 396: ...396 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 405: ...3Com VCX V7111 VoIP Gateway User Guide 405 Reader s Notes ...
Page 406: ...406 3Com VCX V7111 VoIP Gateway User Guide ...
Page 410: ...410 3Com VCX V7111 VoIP Gateway User Guide ...
Page 426: ...426 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 432: ...432 3Com VCX V7111 VoIP Gateway User Guide Figure 153 Prerecorded Tones Screen ...
Page 452: ...452 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...
Page 456: ...456 3Com VCX V7111 VoIP Gateway User Guide Readers Notes ...