The document describes the IP Network Series 3 card including:
Benefits to Customer
Comparison of IPN-2 and IPN-3 Cards
IP Network Interface Series 3 Voice Coder Packet Rate Information
Obtaining Additional Software Fault Log Information
The IP Network Interface Series 3 line card (hereafter referred to as the IPN-3 card) is the third generation IP Network card in the CSP product line. The following were the first two versions:
IP Network Interface Series 2 (hereafter referred to as the IPN-2 card)
Refer to Comparison of IPN-2 and IPN-3 Cards.
Functionally, the IPN-3 card is very similar to the IPN-2 card. Beside some minor differences to a few OAM messages, the IPN-3 interfaces (internally and externally) are backward compatible with the IPN-2 card.
New VoIP Module
The IPN-3 has a new VoIP Module using the Mindspeed Picasso DSP Chips. There are some changes to the VoIP profiles that are described in the section, Comparison of IPN-2 and IPN-3 Cards
New Physical Network Architecture
On the IPN-2 there are three Ethernet ports configured as a Link Aggregation Group (LAG) allowing a 300 Mbps pipes. The IPN-3 provides six Ethernet ports:
two dedicated to a segregated control network
four dedicated to a public network
Only two ports need to be trunked because the maximum bandwidth needed does not exceed 200 Mbps (about two DS3 worth of G.711).
Benefits to Customer
The following are benefits to migrating to the IPN-3 card:
SwitchKit customers who replace their IPN-2 card with the IPN-3 card will not have to re-write their applications because the IPN-3 card is backward compatible. (Customers who do not use SwitchKit have to code the new board ID in their applications.)
The IPN-3 has a more powerful CPU and more memory than the
IPN-2 card. Refer to Comparison of IPN-2 and IPN-3 Cards for the details.
The IPN-3 binds a logical span/channel to a specific module so when a DSP fails the L4 channels can stay out of service which prevents further problems. To support this feature, the physical span offsets on the IPN-3 card is associated with a module. You assign the first eight spans (or 16 depending on the profile) to the first module and then assign the next eight (or 16) spans to the second module.