MSC(Mobile Switching Center) HD-CX/PX-300(Cellular/PCS)
Overview
Modular H/W and S/W which allows easy expansition
Adoption of the open architecture for various network interfaces
Multiprocessor structure (function distribution and load distribution)
Distributed control structure and system redundancy |
Specifications
| System Overview |
System Overview(Cont'd) |
| Capacity |
Subscribers |
350,000 Subs. †1 |
Interface |
to ISDN |
Physical |
E1 / T1 |
| Wireline Subs. |
512 Subs. |
Signaling |
No.7 ISUP |
| Trunk |
30,000 channels †2 |
IWF↔PSPDN |
Physical |
E1 / T1 Ethernet Link |
| VLR Subscribers |
350,000 Subs. †3 |
Signaling |
X.25 or TCP / IP |
| Traffic Processing |
27,000 Erlang †4 |
OMID↔Billing
/ OMC |
Physical |
10BASE-T and Ethernet |
| Call Processing |
500,000 BHCA †5 |
Signaling |
X.25 or TCP / IP |
| SS7 Signaling
Link |
128 Links |
|
| No. of BSCs |
12 BSCs / MSC |
Physical Dimension |
| Interface |
to BSC |
Voice |
Max. 32 E1 or 40 T1 |
Simension (HxWxD) |
1,800 x 750 x 600 mm |
| Signaling |
IS-634, IOS 2.0 |
Weight |
|
| to PCX, PLMN |
Physical |
E1 / T1 |
Configuration |
| Signaling |
. Moibility
info.: No.7(MTP,
SCCP, TCAP) and IS-41 MAP
. Line setup: No.7(TUP, ISUP) and R2 |
Time Switch
Capacity |
2 k x 2 k |
| Space Switch
Capacity |
32 x 32 x 2 k |
| Fiber Optic
Link |
155.52 Mbps |
| to HLR, SMC,
AuC |
Physical |
E1 / T1 |
CPU |
32 bit MC68030 / 68360
/ 68060 |
| Signaling |
No.7(MTP,SCCP,TCAP)
& IS-41 MAP |
Memory |
16 / 32 / 64 Mbyte On-board |
| MTU/DKU/Input
Output Port |
3 / 6 / 16 |
| to VMS/ FMS |
Physical |
E1 |
Language |
CHILL, C, ASM |
| Signaling |
No.7 or LAPD(option) |
Environmental |
| to OMID |
Physical |
RS-422 |
Operating Temperature |
+10℃ ~ +40℃ |
| Signaling |
IPC |
Humidity |
5% ~ 95% |
| to IWF |
Physical |
E1 |
Power |
| Signaling |
ISDN PRI & FR |
Input Power |
-48 VDC |
| to PSTN |
Physical |
E1 / T1 |
Power Consumption |
|
| Signaling |
R2MFC or No.7 TUP |
|
| † 1: Subs. / MSC: 30,000 [subs.
/ ASS-M] * 12 [ASS-M / MSC] = 360,000 subs. ≒ 350,000 subs. / MSC |
|
ⓐ Subs. / ASS-M = 31,000 ≒ 30,000 subs.
(@ 1% block, 0.03 Erl. / subs., 960 Ch. / ASS-M)
ⓑ Chs. / ASS-M: physically maximum 1,920 Chs can be supported by ASS-M
but just about 960 Chs are available by limit of call processing capability |
| † 2: Trunk Chs / MSC: 1,920 [Chs
/ ASS-T] * 16 [ASS-T / MSC] = 30,720 ≒ 30,000 Trunk Chs / MSC |
| † 3: VLR Subs. capacity = MSC
Subs. Capacity |
| † 4: Erlang / MSC: 32 [ASS] *
1 / 2 * 1,920 [Chs / ASS] * 0.8876 [Erl. / Chs] = 27,267 ≒ 27,000
Erlang / MSC |
|
ⓐ 32: the maximum number of ASSs
ⓑ 1/2: each ASS is consist of input and output Chs. Capacity must
be calculated with one party (input or output)
ⓒ 1,920: the number of Chs of one ASS
ⓓ 0.8876: maximum available traffic which is gained by statistics.
The unit is [Erlang / Chs] |
| † 5: BHCA / MSC: 45,000 [BHCA
/ ASS-M] * 12 [ASS-M / MSC] = 540,000 ≒ 500,000 BHCA / MSC |
| Key Features |
* Multiprocessor structure: function and
load distribution |
* Distributed control structure: 2-level
control layer structure
(high-level processor: MP, low-level processor:
PP)
- MP: call handling, number translation, switchnig
control, system operation and maintenance
- PP: speech path monitoring, analysis, signal
processing |
| * Parallel processing operating system:
CROS to support CHILL |
| * Redundancy: MP, PP, communication controller,
time switch, space switch, network synchronizer |
| * OMID (Operation & Maintenance Interface
Device) implementation |
|
|
|
| Functions |
* Call control and mobility management |
| * Call features and supplementary services |
| * Operation, administration and maintenance |
| * Interface to PSTN / ISDN / PLMN / PSPDN |
| * Interface to OMC / NMS / Billing system |
|
|
|
| Benefits |
* Modular H/W and S/W which allows easy
expansition |
| * Adoption of open international standards:
IOS 2.0, IS-634A |
|
Subsystem Functions
| ASS(Access Switching
Subsystem) |
Time Switching
BSC / Network Interface & C-7 Handling
Call Control (Basic & Supplementary)
Signaling & Announcement |
| INS(Interconnection
Network Subsystem) |
Space Switching
Number Translation & Route Control
Network Synchronization |
| CCS(Central Control
Subsystem) |
Maintenance
& Administration
Charging & Statistics
Man Machine Interface (GUI)
Billing System / OMC Interworking |
| VLR(Visitor Location
Register) |
Visitor Information
Handling
Location Registration / Update
Visitor Call Control
Distributed Multiple Processors (10) |
|
|
Subsystem Configuration &
Capacity
| Subsystem |
Description |
Rack |
|
ASS-S
|
Wireline subs. for test
Time switch capacity
RDC capacity
Tone capacity
ASS-INS links
Call mixer capacity
Announcement recording |
512 Subs.(@ 1 rack)
2,048 time slots
64 Chs
32 Chs
2048 time slots
200 groups (600 Chs)
64 messages |
ASIR, AMIR |
|
ASS-7
|
Time switch capacity
ASS-INS links
No.7 signaling links |
2,048 time slots(@ 1rack)
2,048 time slots
128 links |
SMHPR |
|
ASS-M
|
Trunks with Base Station
Time switch capacity
RDC capacity
Tone capacity
ASS-INS links |
1,920 trunks(@ 12 rack)
2,048 x 2 time slots
64 Chs
32 Chs
2,048 time slots |
BSIR, BSCR |
|
ASS-T
|
Trunk capacity
Time switch capacity
R2 S/R capacity
Tone capacity
ASS-INS links |
1,920 trunks(@ 16 rack)
1,024 x 2 time slots
256 Chs
128 Chs
1,024 x 2 time slots |
DTIR, DTCR |
|
ASS-IWF
|
Time switch capacity
Frame Relay links
ISDN PRI links
ASS-INS links |
1,024 x 2 TSs(@ 1 rack)
12 E1
16 E1
1,024 x 2 time slots |
FRIR |
|
ASS-V/F
|
Trunk capacity
Time switch capacity
ASS-INS links |
1,920 trunks(@ 1 rack)
2,048 both-way time slots
2,048 time slots |
|
|
INS
|
Space switch capacity |
32 x 32 x 2,048 time slots |
CDLR, NESR, HCIR |
|
CCS
|
I/O device composition |
OMP - 4 disks, 3 MTs
MMP - 2 disks |
LRPR, MMLR, OMPR, MTR |
|
Supplementary Services
| Service
Feature |
Service
Feature |
Announcement SVC
Auto Answer SVC
Automatic Call Distribution
Call Baring
Call Forwarding
Call Forwarding to VMS
Call Holding
Call Restriction by Operator
Call Transfer
Call Waiting
Calling Line Identification Presentation
Calling Line Identification Restriction
Caller Number Identification Presentation
Caller Number Identification Restriction
Cancel Call
Conference Call
Do Not Disturb
Emergency Call Routing
Flexible Alerting
|
Malicious Call Trace
Message Waiting Notification
Mobile Access Hunting
Originating Call Barring
Password Call Acceptance
Perfered Language
Personal Identification Number
Priority Access and Channel Assignment
Remote Feature Control
Selective Call Acceptance
Special Number Service
Subscriber Observation
Seubscriber PIN Access (SPINA)
Subscriber PIN Intercept (SPINI)
Temporal Power Tracking Loop (TPTL)
Terminating Call Barring
Three Way Calling
Voice Activated Dialing
|
|
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