Mitel TA7100 Series Quick guide

Mitel TA7100
58014903 REV00
STANDARD FAX CONFIGURATION

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Mitel TA7100 Standard Fax Configuration
58014903 REV00 - May 2016
®,™ Trademark of Mitel Networks Corporation
© Copyright 2016, Mitel Networks Corporation
All rights reserved

Table of Contents
iii
Fax Information Required for Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
T.38 Fax Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PROs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CONs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Enabling T.38 Fax Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setting the Redundancy Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Allowing Unsecure T.38 with Secure RTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Selecting the Base Port for T.38 Fax Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Configuring the Behavior of the T.38 INVITE Not Accepted. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fax Transmission through a Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Configuring the T.38 No Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Clear Channel Fax Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PROs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CONs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Configuring the Clear Channel Fax Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FAX Detection Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Configuring Machine Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SipEp > Interop Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fax Information Required for Troubleshooting
4
Fax Information Required for Troubleshooting
Information Type
Fax Transmission Protocol Clear Mode T.38
Fax Transmission Speed High speed Low speed
Fax mode Automatic Manual
Receiving fax Model Make
Sending fax Model Make
Fax mode ECM non- ECM
Firewall Yes No

T.38 Fax Transmission
5
T.38 Fax Transmission
T.38 is an ITU recommendation for allowing transmission of fax over IP networks in real time.
PROs
• Allows for redundancy, therefore increases the reliability of the transmissions.
• Faxes in T.38 are not as sensitive to network imperfection like packet loss or jitter as faxes in
Clear Channel.
CONs
• The number of redundancy packets will increase the bandwidth used
• The higher the speed, the more bandwidth is used.
• May take more bandwidth than a fax in Clear channel.
Requirements
• The Mitel unit must be able to detect a CNG, v21 preamble or T.38 packet to switch to T.38
• Reasonable delay, 1 second round trip is acceptable however 2 seconds could cause timeout
or collision
Configuration
•Enabling T.38 Fax Transmission
•Setting the Redundancy Level
•Allowing Unsecure T.38 with Secure RTP
•Selecting the Base Port for T.38 Fax Calls
•Configuring the Behavior of the T.38 INVITE Not Accepted

T.38 Fax Transmission
6
Call Flow
Enabling T.38 Fax Transmission
If you are not familiar with the meaning of the fields, click Show Help, located at the upper right
corner of the Web page, to display field description when mousing over the field name..
Steps
1. Go to Media > Codecs.
2. In the Codec section, click located on the same line as T.3 8.

T.38 Fax Transmission
7
3. Set the Enable filed to Enable.
4. Click Apply.
Result:
Setting the Redundancy Level
If you are not familiar with the meaning of the fields, click Show Help, located at the upper right
corner of the Web page, to display field description when mousing over the field name..
Steps
1. Go to Media > Codecs.
2. In the Codec section, click located on the same line as T.38 .
3. In the T. 38 table, set the Redundancy Level.
NOTE: Using redundancy increases transmission reliability, however the number of redundancy
packets will also increase the bandwidth being used.
4. Set the Frame Redundancy Level.

T.38 Fax Transmission
8
NOTE: The repetition of the final frame will help prevent losing the end of a message, v.21 or end
of page message. Losing the end of packet message can create a major problem in the transmission
since the Redundancy is not use in this situation.
5. Click Apply.
Result:
Allowing Unsecure T.38 with Secure RTP
If you are not familiar with the meaning of the fields, click Show Help, located at the upper right
corner of the Web page, to display field description when mousing over the field name.
NOTE: This procedure is required only if SRTP is used.
Steps
1. Go to Media > Security.
2. In the Security table, under the RTP section, set the Mode selection list to Secure with fallback.

T.38 Fax Transmission
9
3. Under the T.3 8 section, set the Allow Unsecure T.38 with Secure RTP selection list to Yes.
4. Click Apply.
Result:
Selecting the Base Port for T.38 Fax Calls
If you are not familiar with the meaning of the fields, click Show Help, located at the upper right
corner of the Web page, to display field description when mousing over the field name.
Steps
1. Go to Media > Misc.
2. In the Base Port table, enter the first port to be used for T.38 Fax calls in the T. 38 field.
NOTE: If you do not know which port to use, refer to the Ports and Protocol Settings document.
3. Click Apply.
Result:

T.38 Fax Transmission
10
Configuring the Behavior of the T.38 INVITE Not Accepted
This task allows you to set the unit’s behaviour after receiving an error to a SIP INVITE for
T.38 fax.
If you are not familiar with the meaning of the fields, click Show Help, located at the upper right
corner of the Web page, to display field description when mousing over the field name.
Steps
1. Go to SIP > Interop.
2. In the Behavior on T.38 INVITE Not Accepted table, from the Behavior selection list, set the
required behavior for each SIP Error Code.
3. Click Apply.