Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 61
A microwave link from a Packet Microwave Adapter card port in access mode can
peer with user equipment such as a node B or MPR-e radio. The 7705 SAR-8 and
the 7705 SAR-18 treat the microwave access link as a normal SAP into a service
such as Epipe, Ipipe, or VPLS/VPRN.
Voice ports on the 6-port E&M Adapter card, 8-port Voice & Teleprotection card, and
8-port FXO Adapter card provide voiceband transmission between two analog
devices over a digital network. A 7705 SAR-8 or 7705 SAR-18 terminates the voice
circuit and then transmits the data over a TDM-based network interface
(SAP-to-SAP) or an MPLS packet-based network interface (SAP-to-SDP). For
standard TDM, a T1 or E1 interface is used to transmit the data across the network.
For MPLS, any network interface (that is, Ethernet, T1/E1 MLPPP, or OC3/STM1)
can be used. The traffic originating from the 6-port E&M Adapter card, 8-port Voice
& Teleprotection card, or 8-port FXO Adapter card can be mapped into a TDM
pseudowire (Cpipe) for transport across the MPLS network. The 6-port E&M Adapter
card, 8-port Voice & Teleprotection card, and 8-port FXO Adapter card support one
TDM pseudowire per port.
The voice circuit can terminate on another 7705 SAR-8 or 7705 SAR-18 over the
MPLS or T1/E1 TDM connection, on other TDM-capable equipment (such as a 3600
MainStreet node) over a T1/E1 TDM connection, or on other MPLS-capable
equipment over an MPLS pseudowire emulation (PWE) connection. A 3600
MainStreet or 1511 MAX can also connect to an FXO port on the 8-port Voice &
Teleprotection card.
Voice ports on a 6-port FXS Adapter card can be configured for a PBX application or
a PLAR (hotline) application. For a PBX application, the voice circuits are terminated
on an FXO interface at a 7705 SAR hub location that is connected to a PBX. The
FXO interface can be provided by either an 8-port FXO Adapter card or 8-port Voice
& Teleprotection card that is installed in a 7705 SAR-8 or 7705 SAR-18 chassis at
the 7705 SAR hub location. For a PLAR application, voice circuits are terminated on
an FXS interface on either another 6-port FXS Adapter card or an 8-port Voice &
Teleprotection card that is installed in a 7705 SAR-8 or 7705 SAR-18 chassis located
at a remote location, or terminated on a 3600 MainStreet or 1511 MAX. A hotline call
can also originate from a 3600 MainStreet or 1511 MAX and terminate on an FXS
interface on a 6-port FXS Adapter card (or on an FXS interface on an 8-port Voice &
Teleprotection card.
SONET/SDH ports in access mode on a 4-port OC3/STM1 Clear Channel Adapter
card can be configured for ATM (such as for 3G UMTS Node Bs).
Note: For information on VLLs, refer to the 7705 SAR Services Guide, “VLL Services”.
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