7705 SAR Interfaces
46
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
• 3600re (Remote Extension) – A-Law companding
The default signaling type for FXO and FXS is 3600ls for Mu-Law companding and
3600re for A-Law companding.
3.1.3.9.3 8-port FXO Adapter Card
The 8-port FXO Adapter card supports the transport of an analog voiceband signal
between two analog devices over a digital network
The card supports analog voiceband signals through four RJ-45 connectors that
provide eight Foreign Exchange Office (FXO) ports, with two ports supported per
connector. The analog signals are converted into a 64 kb/s digital Pulse Code
Modulation (PCM) format using either Mu-Law (North America) or A-Law (Rest of
World) companding. The type of companding is selectable on a per-card basis.
Companding conversion (that is, Mu-Law to A-Law or vice versa) is not supported.
The signaling type is selectable at the port level on a per-port basis depending on
companding type.
FXO supports:
• 1511profile1 (1511 loop start) – A-Law companding
• 3600ls (loop start) – Mu-Law companding
• 3600re (remote extension) – A-Law companding
The default signaling type is 3600ls for Mu-Law companding and 3600re for A-Law
companding.
3.1.3.9.4 6-port FXS Adapter Card
The 6-port FXS Adapter card provides the capability of transporting a large number
of voice circuits from one 7705 SAR location and terminating them at another
7705 SAR location that is connected to a PBX.
The card can also be configured for a Private Line Automatic Ringdown (PLAR)
application, which is typically used outside of a PBX network, in order to provide a
site-to-site or remote site-to-control center hotline functionality.
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