Cisco ASR 1000 Series

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Loopback modes: DTE, local, remote, dual, and network.
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C-bit or M23 framing (software selectable).
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Line build-out: configured for up to 450 feet (135 m) of type 734A or equivalent coaxial cable.
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DS3 alarm/event detection (once per second polling):
- AIS
- Out of frame (OOF)
- Far-end receive failure (FERF)
•
Generation and termination of DS3 Maintenance Data Link (MDL) in C-bit framing.
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Full FDL support and FDL performance monitoring.
FDL is not supported on the 2-Port, 4-Port, and 8-Port Clear-Channel T3/E3 SPAs. Whereas, FDL is
supported on the 2-Port and 4-Port Channelized T3 SPAs, the 1-Port Channelized OC-3/STM-1 SPA, and
the 1-Port Channelized OC-12/STM-4 SPA.
Note
•
Subrate and scrambling features for these DSU vendors:
◦
– Cisco
– Digital Link
– ADC Kentrox
– Adtran
– Verilink
– Larscom
Mixed Port type (T3/E3) is supported on the 8-Port Clear-Channel T3/E3 SPA.Note
Restrictions
Consider the following restrictions when configuring the serial SPAs on the Cisco ASR 1000 Series Aggregation
Services Routers:
For additional information, see also the configuration chapters for the corresponding SPA model. For
other SIP-specific features and restrictions see also Overview of the Serial SPAs, on page 211.
Note
• FRF.16—Multilink Frame Relay (MLFR) is not supported.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17 215
Overview of the Serial SPAs
Restrictions