Specifications

Interface Protocols
Operating Characteristics
3-24 68P81095E55-E August 08, 2000
Network Paths
There are four logical subscriber paths.
• Dispatch calls
• Data Packet within and across networks
• Interconnect calls with other provider networks
• Circuit Switched Data using the IWF in the MSC
Figure 3-17 presents a simplified view of the network paths and protocols.
Figure 3-17 Simplified Dispatch and Interconnect Traffic Paths
Interconnect
Dispatch & Packet Data
Frame
Relay
T1
iDEN MSC
Network Management
Other
Network
SMS/IVR
IWFVoice Mail
Echo Canceller
SS7
CCITT
PCM
SS7 SS7
ISUP
PCM (voice)
PCM - Data
(DS1 modem tones)
XCDR
Base Site
Controller
(BSC)
PCM
voice
&
data
CP
T1
X.25
OML
VSLEP
voice
RLP
data
SS7
MTL
Digital Access
Cross-connect
Switch
(DACS)
V.35
LAPD
Dispatch
Application
Processor
(DAP)
circuit
breakers
Metro
Packet
Switch
(MPS)
V.35
Patch
Panel
Sub-rated
VSLEP Voice
RLP Data
Mobis
Signaling
OML X.25 Ethernet ( T-DAP )
Operations and
Maintenance
Console
(OMC)
X.25/OML
V.35
Channel
Bank
Packet
Switch
T1
X.25
OML
OML
x.25
V.35
Packet
Duplicator(s)
Frame Relay
(LAP-D)
Enhanced Base Transceiver
Station
(ETBS)
iSC
ACG
iMU
BMR
GPS
circuit
breakers
connectors
RFDS
BR
BR
BR
BR
BR
Rx/Tx
interface
circuit
breakers
BR
BR
BR
BR
BR
Rx/Tx
interface
CSU
TFR
Mobis
Signaling
Frame Relay
RLP/ VSLEP
OML
SNMP
Administrative Data Center
(ADC)
X.25/OML
RS232
T. N. French
T. N. French
T. N. French
DS0 - OML
(SNMP LAP-D)
Ethernet
(optional)
OML
x.25
V.35
T1
Ethernet
(optional)