Chapter 5 - Web Interface – Telephony
Voice & Fax Codecs
90
Mediatrix 1204
The following is a T.38 fax call flow:
Figure 44:
T.38 Fax Call Flow
Fax Parameters Configuration
The following are the fax codecs parameters you can set. You can also set these parameters via SNMP, as
described in
“Chapter 17 - Fax Transmission” on page 215
X
To set the fax codecs parameters:
1.
Select to which port you want to apply the changes in the drop down menu at the top of the window.
2.
In the
Fax
section, enable the T.38 codec by selecting
Enable
in the
T.38
choice.
Figure 45:
Telephony – Fax Section
3.
Set the number of redundancy packets sent with the current packet in the
T.38 Protection Level
field.
This is the standard redundancy offered by T.38. Please see step
4
for additional reliability options
for T.38. Available values range from 1 to 5.
4.
For additional reliability, define the number of times T.38 packets are retransmitted in the
T.38 Final
Frames Redundancy
field.
This only applies to the T.38 packets where the PrimaryUDPTL contains the following T.38 data
type:
•
HDLC_SIG_END,
•
HDLC_FCS_OK_SIG_END,
INVITE
Ringing/Trying
ACK
INVITE
Trying
ACK
INVITE
[…]
m=audio 5006 RTP/AVP 0 18 4 8 13
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
[…]
m=audio 5004 RTP/AVP 0 18 4 8 13
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
User
Agent
#1
User
Agent
#2
Trying
ACK
BYE
200 OK
200 OK
Fax Tone Detected
[…]
m=image 6006 udptl t38
a=T38MaxBitRate:14400
a=T38FaxRateManagement:transferredTCF
a=T38FaxFillBitRemoval:0
a=T38FaxTranscodingMMR:0
a=T38FaxTranscodingJBIG:0
a=T38FaxVersion:0
a=T38FaxUdpEC:t38UDPRedundancy
[…]
m=image 6006 udptl t38
a=T38MaxBitRate:14400
a=T38FaxRateManagement:transferredTCF
a=T38FaxFillBitRemoval:0
a=T38FaxTranscodingMMR:0
a=T38FaxTranscodingJBIG:0
a=T38FaxVersion:0
a=T38FaxUdpEC:t38UDPRedundancy
200 OK
Fax is terminated
[…]
m=audio 5006 RTP/AVP 0 18 4 8 13
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
[…]
m=audio 5004 RTP/AVP 0 18 4 8 13
a=rtpmap:0 PCMU/8000
a=rtpmap:18 G729/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
200 OK
2
3
3
5
Содержание Mediatrix 1204
Страница 6: ...Mediatrix Telecom a Division of Media5 Corporation Reference Manual...
Страница 26: ...Preface About this Manual End User Technical Support xxvi Mediatrix 1204...
Страница 27: ...Installation and Web Page Configuration...
Страница 28: ...Page Left Intentionally Blank...
Страница 50: ...Chapter 1 Installation Verifying the Installation 24 Mediatrix 1204...
Страница 98: ...Chapter 4 Web Interface SIP Parameters SIP Authentication 72 Mediatrix 1204...
Страница 127: ...SNMP Configuration...
Страница 128: ...Page Left Intentionally Blank...
Страница 162: ...Chapter 8 IP Address and Network Configuration Ethernet Connection Speed 136 Mediatrix 1204...
Страница 170: ...Chapter 9 SIP Servers Presence Compositor Server 144 Mediatrix 1204...
Страница 174: ...Chapter 10 DNS SRV Configuration DNS SRV Oriented Settings 148 Mediatrix 1204...
Страница 196: ...Chapter 12 Configuration File Download Configuration File Example 170 Mediatrix 1204...
Страница 220: ...Chapter 14 Gateway Configuration Detecting a Far End Disconnect 194 Mediatrix 1204...
Страница 240: ...Chapter 16 Voice Transmissions User Gain 214 Mediatrix 1204...
Страница 288: ...Chapter 23 Telephony Attributes Delayed Hot Line 262 Mediatrix 1204...
Страница 294: ...Chapter 25 Quality of Service QoS VLAN 268 Mediatrix 1204...
Страница 298: ...Chapter 26 Syslog Daemon Syslog Daemon Configuration 272 Mediatrix 1204...
Страница 302: ...Chapter 27 Statistics RTP Statistics 276 Mediatrix 1204...
Страница 319: ...Appendices...
Страница 320: ...Page Left Intentionally Blank...
Страница 332: ...Appendix B Standard Hardware Information Warranty 306 Mediatrix 1204...
Страница 336: ...Appendix C Cabling Considerations RJ 11 Telephone Cable 310 Mediatrix 1204...
Страница 372: ...Appendix E Glossary Wide Area Network WAN 346 Mediatrix 1204...
Страница 390: ...Index W 364 Mediatrix 1204...