Specifications

Application Note
Using Verizon IP Trunk Services with the HiPath 3000 V9 system
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8 LOAD ISSUES/CONCERNS:
The following issues were identified during CPE Interop testing.
The HiPath 3000 does not support REFER or REFER with Replaces; Unscreened ANI; generation of
RTCP packets; it does not generate “183 Session Progress” responses (only “180 Ringing”); and, always
sends RTP packets even when the system places a call on “Hold”.
The following issues were identified during Delta Lab testing.
The HiPath 3000 V9 critical defect that was previously identified has been corrected with a number of
changes to the system configuration, re-tested, and found to handle SIP UDP fragmentation correctly and
the critical defect has been closed.
The HiPath 3000 V9 provides unacceptable facsimile completion ratios with the Verizon Network
Gateway types. Completion ratios with the various Network Gateway and VSP types, as well as, SONUS
Gateway ranged between 90 and 94 percent and this is considered unacceptable.
The HiPath 3000 V9 utilizes INVITE / Re-INVITE methods for call-forwarding but retains the media stream
instead of releasing it to reduce bandwidth usage, and, the wrong Caller-ID is delivered to the terminating
phone.
This will be corrected with the release of the OpenScape Business Platform (Next Generation of
the HiPath 3000) scheduled for release in the 4
th
Calendar quarter of 2013.
On calls where codecs are re-negotiated the OptiPoint 420 Standard phone plays-out DTMF digits using
RFC2833/4733 rtp events even when this capability was never offered or negotiated. Please note that the
OptiPoint 420 is a manufacturer discontinued device that may be present on some HiPath 3000 customer
locations. Reseller must notify the customer about the results of the testing mentioned in the sentence
above. Note that the other phones tested (OpenStage 20T and OpenStage 30T) do not exhibit this defect
and correctly play out DTMF digits using inband DTMF for re-negotiated codec calls.
EXCLUSIONS:
During CPE Interop testing 2CPE and IPCC capabilities were not required by the Verizon VTM and were
not tested. During Delta Lab testing H.264 video codec and G.722 codec support were not tested as none
of the phones supplied and tested support these capabilities. Also, during Delta Lab testing the call-
forwarding via REFER method was not tested as this method is not supported by the HiPath 3000 V9.
Interoperability and Delta Testing was performed using the current Verizon production software releases.
Testing was performed using the requirements and assumptions as provided in the CPE Interop IP
Trunking Test Plan v1.4 and CPE Interop IP Trunking Delta Test Plan v1.2.