Dialogic 3000 SERIES Uživatelský manuál stáhnout pdf (Strana 28)

Dialogic

Brooktrout

Product Series SDK 6.7.0 Release Notes 28

Software Installation

To install and configure the developer software for the Dialogic® Brooktrout® Product Series on Windows® platforms,

please start with Chapter 1 – Quick Start in the Dialogic® Brooktrout® Fax Products SDK Installation and

Configuration Guide. The Dialogic® Brooktrout® Product Series SDK includes all user documentation in the

/Documents directory.

For SR140 products, a license must be activated following the procedure listed in the SR140 (Windows® or Linux) Users

Guide. TR1034 products do not require license activation.

Usage Notes

SIP URI Considerations

SIP URI’s must conform to RFC 2396-Uniform Resource Identifiers (URI) Generic Syntax. Any reserved

character that is required to be passed to the remote device in a SIP URI must be escaped before forming the

URI. An escaped octet is encoded as a character triplet, consisting of the percent character "%" followed by the

two hexadecimal digits representing the octet code. For example, "%2C" is the escaped encoding for the US-

ASCII comma character.

Interoperating in a network consisting of V.34 T.38 capable devices

If the equipment you are communicating with includes V.34 T.38 capable devices; for example the Dialogic®

4000 Media Gateway Series, and any other non-V.34 T.38 equipment can correctly negotiate the T.38 fax

version, you can change the default settings to support V.34 as follows:

t38_fax_version = 3

t38_max_bit_rate = 33600

rtp_ced_enable=false

Interoperating with Cisco V.34 T.38 capable devices

 For outbound V.34 T.38 calls (SR140 to Cisco) to succeed without falling back to V.17, the callctrl.cfg

parameter media_renegotiate_delay_outbound must be changed to a value equal to or greater than zero. This

change implies that the SR140 will initiate a T.38 changeover. The media_renegotiate_delay_outbound

parameter is set to -1 by default. In the Configuration tool, this parameter can be found on the ‘T.38 Parameters’

tab of the ‘IP Call Control Modules’ section.

 Cisco IOS versions that support V.34 T.38 have added a new parameter, ‘version’, to the ‘fax protocol t38’

command. This parameter must be set to 3 in order to enable V.34 T.38 operation since the third version of the

ITU-T’s T.38 specification added V.34 support. This parameter can be set in the global configuration or an

individual dial peer.

Global configuration example:

voice service voip

fax protocol t38 version 3 ls-redundancy 0 hs-redundancy 0 fallback none

sip

Dial peer configuration example:

dial-peer voice 4443 voip

destination-pattern 4443

session protocol sipv2

session target ipv4:10.10.10.1

session transport udp

voice-class codec 1

fax protocol t38 version 3 ls-redundancy 0 hs-redundancy 0 fallback none

Interoperating with ShoreTel gateways

 Enabling redundancy for T.38 causes data errors when using the ShoreTel Gateway Software Release 10 Build

15.6.4207.0. For interoperability, the SR140 requires redundancy for both image and control to be set to 0.

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