Lucent Technologies 5ESS User Manual

ISUP originating terminal process (OTP). The ISUP OTP will send an
ACM message out to the ISUP network. This prevents the call from
being terminated by the ISUP office because the TPS response was
too slow.
The features that follow enhance the capabilities provided by the SIP
for Packet Trunking feature (99-5E-8382). Feature descriptions for
these features can be found in the Feature Descriptions, 235-190-400
document.
UDP Transport Layer for SIP
The UDP Transport Layer for SIP (99-5E-8581) feature allows the
5E-XC
™
to support SIP with a UDP transport layer instead of SCTP,
allowing the 5E-XC
™
to connect to SIP network elements that do not
support SCTP.
Support for SIP without Preconditions
The Support for SIP without Preconditions (99-5E-8582) feature
allows SIP calls to be established without the precondition procedures
that were initially required by the SIP for Packet Trunking feature. For
additional information about SIP signaling procedures, with or without
preconditions, see the Session Initiation Protocol (SIP) - Interface
Specification, 235-900-344 document.
SIP Support for Line to Packet Trunk Calls
The SIP Support for Line to Packet Trunk Calls (99-5E-8583) feature
allows analog and ISDN line originations and terminations to be
routed to and from SIP packet groups, in addition to the circuit trunk
originations and terminations initially supported by the SIP for Packet
Trunking feature.
SIP without Encapsulated ISUP
The SIP without Encapsulated ISUP (99-5E-8587) feature allows the
5E-XC
™
to interwork with elements that do not generate and process
ISUP messages and to generate appropriate interworking messages to
pass through the network. The 5E-XC
™
supports SIP without
Encapsulated ISUP on a per packet group basis.
SIP Enhancements to Support PSTN Gateway Phase 1
The SIP Enhancements to Support PSTN Gateway Phase 1
(99-5E-8658) feature provides a series of enhancements that allow
phone calls to be setup between PSTN subscribers and IP subscribers
that terminate to a Telephone Application Server (TAS). The PSTN
SIP for Packet Trunking
Overview
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235-200-118
Issue 3.02B, March 2007
Lucent Technologies
1-3

Lucent Technologies 5ESS Specifications

General

Brand	Lucent Technologies
Model	5ESS
Category	Switch
Language	English