Alcatel-Lucent 7330 Product Information Manual page 203

TISPAN support
Building upon the work already done by 3GPP in creating the SIP-based IMS (IP
Multimedia Subsystem), TISPAN and 3GPP are now working together to define a
harmonized IMS-centric core for both wireless and wireline networks.
This harmonized ALL IP network has the potential to provide a completely new
telecom business model for both fixed and mobile network operators. Access
independent IMS will be a key enabler for fixed/mobile convergence, reducing
network installation and maintenance costs, and allowing new services to be rapidly
developed and deployed to satisfy new market demands.
The Alcatel-Lucent Feature Server 5000 is more than 80% compliant with all
TISPAN Release 1 features, with the exception of TS 183 023 (XCAP over the Ut
interface).
Contact your Alcatel-Lucent support representative for a complete listing of all
TISPAN compliance details.
Common service operation mode features
Table
Table 5-1 Common features of VoIP service operation modes
Feature Description
802.1p The upstream VoIP traffic is marked with an 802.1p priority value according to the priority queue
profile and the following rules:
•
It is recommended to use two priority queues.
•
The priority queue with the highest mapped value is used for VoIP signaling, dynamic host
configuration protocol (DHCP) and file transfer protocol (FTP).
•
The other priority queue is used for bearer traffic.
•
For each traffic type, the traffic is tagged with the highest value mapped to its priority queue.
•
In the downstream direction, other values mapped to the two priority queues are used to map
frames to the appropriate GPON encapsulated module (GEM) port ID.
911 The ONTs do not have special requirements for 911 calls, except for SIP mode 2.
Bandwidth Bandwidth profiles are provisioned for both upstream and downstream traffic flows. These profiles
profile are for both signaling and bearer traffic. Bandwidth and priority queue profiles are defined at the
packet optical line termination (P-OLT) unit. The same set of profiles can be used for all VoIP traffic.
DSCP The upstream signaling and bearer VoIP traffic is marked with differentiated services code point
(DSCP) values according to VoIP service and POTS port provisioning.
For non-SoC-based ONTs, signaling and bearer in the downstream direction must be marked with the
priority bits in the priority queue (PQ) profile for VoIP services. Otherwise, signaling is not directed
to the VoIP stack and the bearer is not directed to the voice path.
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5-1 describes features that the VoIP service operation modes have in common.
Edition 01 ONT Product Information Guide
March 2011
5 — VoIP overview
5-3