Dialogic 3000 SERIES Uživatelský manuál stáhnout pdf (Strana 29)

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Product Series SDK 6.7.0 Release Notes 29

 The ShoreTel Gateway sends a SIP session refresh if it is enabled on the ShoreTel Gateway, even if the SR140

is configured not to use SIP session refresh. This will cause the SR140 to drop the call if a SIP refresh is

received. For interoperability, the SR140 must enable SIP session refresh or the ShoreTel Gateway must disable

SIP session refresh by using the ShoreWare Director (select Call Control, then Options, then disable the session

timer, and set the session interval and the refresher).

 The ShoreTel Gateway does not support V.17 for T.38. The maximum protocol supported is V.29 (9600

bits/sec).

Interoperating with Avaya gateways, Alcatel gateways and the Broadspeed SIP trunking service

Due to lack of T.38 Error Correction Mode (ECM) support on these systems, faxes containing errors caused by

possible telephone line conditions are more likely to fail and therefore affect the overall fax completion rate

under these specific conditions.

Tracing G711 RTP using wireshark

Wireshark decodes all G711 packets as T.38 after a SIP re-REINVITE or H245 requestMode for T.38 is

rejected. https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2368

Applications using DID phone lines

When writing an application that collects DID digits, try to minimize the delay between the collection of the

digits and when the application answers the call. If the call is not answered within 200 ms after the last DID

digit, the CO (or PBX) may timeout and disconnect the call.

Systems with Intel 5500 Series or 5600 processors

Dialogic recommends disabling C-state support in the BIOS and/or OS of systems with Intel 5500 or 5600

processors; this may be referred to as CPU Power Saving Mode. This recommendation is due to Intel Errata

AAK120 Rapid Core C3/C6 Transition May Cause Unpredictable System Behavior which affects all steps (C-

0, C-1, D-0) of the 5500 Series processor and BD59 Package C3/C6 Transitions When Memory 2x Refresh is

Enabled May Result in a System Hang affecting all steps (B-1) of the 5600 Series processors. In particular we

experienced erratic timing behavior on Intel 5500 based systems during testing of Red Hat 6.0, which added

support for the C6 Intel C-State.

Fax Pass-through (G711 RTP) Design Consideration

G711 RTP, particularly V.34 G711 RTP is more sensitive to network impairments than T.38. V.34 G711 RTP is

not supported on a Virtual Machine. Please refer to Appendix A for a section on design considerations to help

provide guidance to those deploying G711 RTP.

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Dialogic 3000 SERIES Uživatelský manuál Strana 29