Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 29
The 6-port FXS Adapter card supports a single channel group on an FXS circuit.
The 4-port OC3/STM1 / 1-port OC12/STM4 Adapter card supports channelization at
the DS1/E1 level only.
3.1.2.4.1 PPP Over Fractional T1/E1
The 16-port T1/E1 ASAP Adapter card, 32-port T1/E1 ASAP Adapter card, and the
T1/E1 ports on the 4-port T1/E1 and RS-232 Combination module each support
fractional T1/E1 on a PPP channel group in network mode. Fractional T1/E1 allows
one or more DS0 channels to be bundled together (up to the maximum bandwidth of
the network link), allowing the customer to use only that portion of the link that is
needed. This means that the PPP service can use a selected number of timeslots
(octets) in the network T1 or E1 link, thus reducing the amount of T1 or E1 bandwidth
that must be leased or purchased from the attached carrier. This leads to
multiplexing efficiencies in the transport network.
Only one channel group can be configured per port. When the channel group is
configured for ppp-auto encapsulation and network mode, all timeslots (channels)
are automatically allocated to the channel group. The user can then configure the
number of timeslots needed. Timeslots not selected cannot be used.
3.1.3 Configuring Ports
A port can be configured after the IOM is activated (the card slot and card type are
designated) and the adapter card slot is preprovisioned with an allowed adapter card
type.
The 7705 SAR supports the port types listed below:
• Ethernet
• TDM
• DSL
• GNSS Receiver
• GPON
• Multilink Bundles
• IMA
• SONET/SDH
• Voice
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