Alcatel-Lucent 7360 - Service and Protocol Configuration; Voice Gateway Mode Considerations; Softswitch Modes; DHCP Options and Voip Modes

5 — VoIP overview
Alcatel-Lucent 7302 ISAM | 7330 ISAM FTTN | 7360 ISAM FX ONT R04.06.02 November 2013 5-21
3FE 55873 AAAA TCZZA Edition 01
ONT Product Information Guide
Service and protocol configuration
Service and protocol configuration requirements are different between the voice
gateway mode and the softswitch mode.
Voice gateway mode
In the voice gateway mode, the service and protocol configuration must be manually
performed using the element management system (EMS). Voice gateway
deployments require some unique considerations during service and protocol
configuration; see Table 5-6.
Table 5-6 Voice gateway mode considerations
Softswitch modes
There are two softswitch modes: H.248/Megaco and SIP softswitch modes. In these
modes, some configuration elements associated with VoIP provisioning can be
derived automatically from the DHCP/BRAS servers on the network. Package C, D,
and I-240W-S ONTs do not support softswitch modes.
The ONT and the softswitch trigger the ARP proxy function for individual MAC
address learning.
Table 5-7 describes the use of different DHCP options in the different VoIP modes.
Table 5-7 DHCP options and VoIP modes
Type Consideration
ONT configuration The static IP addresses must be derived and configured
along with termination identifiers on the ONT during the
POTS provisioning time. No DHCP function is expected.
Voice gateway configuration The ONT IP addresses and the termination identifiers must
be configured on the voice gateway.
File download The ONT is expected to use an embedded configuration for
voice gateway applications. File download is not necessary.
The embedded configuration profile is stored on the ONT
flash. ONTs are shipped from the factory with the
embedded profiles already installed. New configuration
files can be downloaded to the ONT flash via FTP.
ONT and voice gateway MAC
configuration
The ONT and voice gateway MAC addresses are fixed at the
ONT and the voice gateway. The MAC addresses are
exchanged as part of the ARP.
DHCP option Function Voice gateway
mode
H.248 Softswitch
mode
SIP mode 1
(for IPoE)
SIP mode 2
(for IPoE)
1 IP subnet mask Not recommended Supported Supported Supported
3 Default IP router Not recommended Supported Supported Supported
6 DNS server address Not supported Not supported Supported Supported
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