# Mobile Switching Center

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Descriptions

The MSC entity is integrated in the MSS. This server is responsible for call control, processing and PSTN access for the UltraWAVE system.

MSC Parameter Dictionary

• System

• Dialing Plan Set >> Dialing Plan

• Routing Zone Set >> Routing Selection

• Trunk Group >> Trunk >> CIC Table

• Location Area >> Cell

• Media Gateway

See Also

• Enable Mobile Call

• Enable PSTN Call

• Enable Supplementary Service

• Enable Emergency Call

Feature List

Feature | Descriptions
Capacity | Traffic (BHCA): •Erlang: 2.5k •Local call: 60k •Outgoing call: 70k •Incoming call: 70k •Location update: 200k •CAMEL handling: 200k •Outgoing SM: 100k •Incoming SM: 100k Trunk: •1023 trunks (1 to 127 trunk/trunks can be assigned to one trunk group) •1023 MG connections

Interface

SCCP (ANSI T1.112, ITU-T Q)

TCAP (ANSI T1.114, ITU-T Q)

ISUP:

•ITU ISUP (ITU 92/97)

•ETSI ISUP (ETSI V2)

•ANSI ISUP (ANSI T1.113-1995)

•UK ISUP (NICC ND1007)

ISDN:

•ITU ISDN (Q.931 05/98)

•ETSI ISDN (QSIG ECMA-143)

•ANSI ISDN (NIS-A233-1)

A interface (ETSI, ANSI, IPA BSC):

•BSSMAP: Manage the AIF circuit between MSC and BSC

•DTAP: Implement mobility management, call control, supplementary service and SMS to mobile station

SSF (GSM 03.78, 03.18):

•CAMEL interface on switch side

MAP 1,2,3 (ETSI, ANSI):

•MAP B (to VLR)

•MAP C (to HLR)

•MAP D (VLR to HLR, for inter-PLMN roaming)

•MAP F (to EIR)

•MAP E (to SMSC)

CAMEL I, II, III (ETSI, GSM 09.78)

SMPP: Short Message Peer to Peer protocol

SNMP V2: Heartbeat report, parameters maintenance, CDR, statistics

Soft switch:

•SIGTRAN:

•SCTP (RFC 2960): Provide efficient signaling transport over IP network between SG and MGC (MSC)

•M2UA (RFC 3331): Adaptation layer for transport of MTP2

•IUA (RFC 3057): Adaptation layer for transport of ISDN Q.921

•M3UA (RFC 3332): Adaptation layer for transport of MTP3

•MTP3 (ANSI, ITU, SCCP-Lite): Messages between the SG and the MGC

•MGCP (RFC 2705): Provide media gateway control function between the MG and MGC (MSC)

•BICC (ITU-T Q): Provide call service between soft switches

•RTP (RFC 3550): Real time transport of audio packets

•SIP (RFC 3261)

Signaling | 14-bit/24-bit point code 4 SS7 networks: International, International-spare, National, National-spare 512 linksets, 1024 links •1 to 16 links per linkset (The total number of links should be less than or equal to 1024) •Flexible point code: OPC and DPC per linkset •Network Indicator per linkset STP (point code and GTT E.164, E.212 and E.214)

Switching and numbering

Uniform numbering plan (NDC dialing plan in HPLMN)

Registered exchange numbering plan (No NDC dialing plan in HPLMN)

Normal routing:

•1023 trunk groups, 1023 trunks

•1 to 127 trunks per trunk group (the total number of trunks should be less than or equal to 1023)

•Support E.164 “+”

•Longest-prefix match routing

•Called number group routing

•Intelligent routing

•Number length dependent routing

•Alternative trunk group routing

Routing by caller location:

•15 dialing plans, each plan defines:

•1023 16-digit dialing prefixes or groups

•16-digit prefix manipulation for up to 32-digit called number

•Calling number manipulation

•E.164 international number manipulation

•MNP flag

•Premium call flag

•Support up to 31 routing zones, each routing zone has:

•1 dialing plan

•Up to 63 routing plans (trunk group)

•1 announcement plan

•1 AAS/SRF address

Mobility | Location update IMSI attach/detach VLR purge Intra-MSC handover Inter-PLMN roaming 1023 location areas Restoration in VLR
Basic services | Telephony full rate speech (TS11) Emergency call setup (TS12) DTMF support Short message service
CDR | Call details records (GSM 12.05)

Call measurement

Call service, origination, destination or trunk based statistics

•Mobile originating call

•Mobile terminated call

•Incoming trunk call

•Outgoing trunk call

•Mobile to mobile call

•Trunk to mobile call

•Mobile to IP (Intelligent Peripheral) call

•Trunk to IP call

•IP terminated call

•Mobile to trunk call

•Trunk to trunk call

•Inter-connection call

Statistics on network traffic basis

Security | Authentication messages and procedures Enhanced security (Ki encrypted in AUC) Multiple concurrent A3&A8 algorithms EIR inter-working, IMEI checking Ciphering (A5) TMSI allocation
IN services | Integrated MSC/SSP Support for CAMEL flags Billing records for MO, MT, CF calls Billing records for transit calls Billing records for SMS Diagnostic field stored in billing record CDR generation SCP directed activation of call limit timing

Supplementary services

Call forwarding

•Call forwarding unconditional (CFU)

•Call forwarding on subscriber busy (CFB)

•Call forwarding on no reply (CFNRy)

•Call forwarding on subscriber not reachable (CFNRc)

Call hold

Call waiting

Call barring / Operator determined barring

Premium call

Notification of call barring

Password control

Calling Line Identification Presentation (CLIP)

Calling Line Identification Restriction (CLIR)

Connected line identification presentation (COLP)

Connected line identification restriction (COLR)

Notification of call forwarding

Explicit call transfer

Operator specific barring (OSB)

Three-party call (3PTY)

Unstructured Supplementary Service Data (USSD)

enhanced Multi-Level Precedence and Preemption Service (eMLPP)

Voice codec | Support the negotiation for G.711, G.729, FR, EFR and AMR Codec negotiation and transcoding Enhanced codec support for dynamic payloads
Location services | Cell ID based location query Standard MAP-interface Lg to gateway mobile location center Support up to 1023 LAC+Cell ID
Call interception | Support lawful call interception
Enhanced service | Support SMS •MO/MT SMS •Short Message Service to and from Application (SMPP) •Short Message Service to other SMSC Voice mail service Support SRF Programmable announcement for unattainable call setup and PPS Call teardown announcement Call duration control Echo canceling (Media Gateway)
Redundancy | Dual switches load sharing and active redundancy Signaling link redundancy RTP stream routing redundancy
License control | MSC application flag 8 to 1023 at multiples of 8 trunks

MSC Parameter Dictionary

Parameter | Definition | Range
System | -- | --
•CDR Option | Control the Call Detail Record generation for different call types. | •ON •OFF
•MO Max Call Duration | Define the permitted maximum call duration for MO call. Any ongoing call reaching this threshold will be compulsively cut off. Set 0 to disable this function. | 0 - 255 minutes 0 = No restriction
•MT Max Call Duration | Define the permitted maximum call duration for MT call. Any incoming call reaching this threshold will be compulsively cut off. Set 0 to disable this function.
•Location Number | Specify the location routing number for MNP service. | Numeric max 16 digits
•Suspend Timer | If receives ISUP SUSPEND message in an ISUP call, then start the suspend timer to wait for the ISUP RESUME message. If time out, then send RELEASE to ISUP. | 0 - 65535 seconds

•eMLPP PCI Option

The enhanced multilevel precedence and preemption (eMLPP) service provides the capability to classify the mobile subscribers according to a subscriber specific priority.

•The preemption capability indicator (PCI) is set when the traffic channel to be assigned may preempt (forced release) an existing connection with a lower priority level (active preemption).

•The preemption vulnerability indicator (PVI) is set when the traffic channel to be assigned can be preempted by another connection that might be established later with a higher priority level (passive preemption).

Level A / B:

•Enable

•Disable

Level 0 - 4:

•Enable

•Disable

•eMLPP PVI Option
•Assignment Timer | Specify the maximum waiting time for receiving Assignment Complete message after the Assignment Request message has been sent. Unit is 100 ms. | 0 - 255
•Paging Timer | Specify the maximum waiting time for receiving Paging Response message after the Paging message has been sent. Unit is second.
•Split ETC Number | Allow or forbid splitting the Correlation ID and SCF ID in Establish Temporary Connection message. | •Enable •Disable
Dialing Prefix Set | -- | Max 15 items
•CC | The code that identifies the country's network. | Numeric max 8 digits
•NDC | Define the national calling area or national network to which the subscriber belongs.
•International Prefix | A digit or combination of digits used by a subscriber when making an international call. The international prefix is used to indicate that the following digits represent an international number and should be routed to an international gateway.
•National Prefix | A digit or combination of digits used by a subscriber when calling a national destination (within the country) other than that of the local area network.
•HPLMN CC 0~7 | Assign up to 8 Country Code to the home PLMN. | Numeric max 16 digits
•Number Plan Area | Specify number plan area number for MNP outbound. | Numeric max 8 digits
> Dialing Prefix | -- | Max 1023 items
•Lookup Method | Select a dialing plan lookup method. Group Lookup Method has a higher priority than Prefix Lookup Method. | •Prefix •Group
•Prefix | A combination digits that dial to originate a call. It's only valid when the lookup method selected Prefix. | Numeric max 32 digits
•Group Prefix Start | The beginning of the group prefix range. It's only valid when the lookup method selected Group.
•Group Prefix End | The end of the group prefix range. Start prefix and end prefix must have the same length.
•Number Attribute | The original type of the incoming number. It is specified by originating node for terminating node to route this call with proper dialed number manipulation. | •Unknown •MSISDN •NDD •IDD
•Administration State | (Read Only) The state of the current setting entry. | •Locked •Unlocked
•Number Length | The length of the dialed number. •0 = Length is uncertain | 0 - 32
•Service Type | Service type of the outgoing call: •Normal = No verification for MT •Emergency Call = No verification for MO (free call) •Intelligent Call = Calls to intelligent peripheral | •Emergency Call •Normal Call •Intelligent Call
•Emergency Type | Specify index number which associated with the 8 emergency call numbers in Location Area or Cell setting. | 0 - 7
•Service Key | Specify service hot key which associated with the service key configured in PPS SRF parameters. | 0 - 9
•Number Type | It determines how the numbers are sent out. | •PSTN •MSISDN •MSRN
•CLI Type | It determines the format of the Caller Line ID (CLI). •Sub = Unknown(Sub) = "SN" •NDD = "NDC+SN" •Unknown(NDD) = "Nat Prefix+NDC+SN" •IDD = "+CC+NDC+SN" •Unknown(IDD) = "Int Prefix+CC+NDC+SN" | •Sub •NDD •IDD •Unknown (Sub) •Unknown (NDD) •Unknown (IDD)
•Routing Selection ID | Specify the Routing Selection ID to this Dialing Plan. | 1 - 31
•CDR Flag | Enable or disable the Call Detail Record generation of this prefix. | •Enable •Disable
•SRF-MNP Flag | Enable if this prefix relating to SRF MNP service.
•IN-MNP Flag (MSC) | Enable or disable IN MNP service when the system performs as MSC.
•IN-MNP Flag (GMSC) | Enable or disable IN MNP service when the system performs as GMSC.
•Premium Call Flag | Enable if this prefix relating to Premium Call service.
•OSB 1 Flag | Subscribers with OSB type 1 can only make calls to this dialing prefix with Call Allow Flag enabled.
•OSB 2 Flag | Subscribers with OSB type 2 can't make calls to this dialing prefix with Call Bar Flag enabled.
•NAI for Outgoing Call | The transformed type of the incoming number, which will be routed to the associated trunk group. | •Unknown •MSISDN •NDD •IDD
•PSTN Deletion Count | Number of digits to be deleted from the beginning of the dialed number. | 0 - 16
•PSTN Inserted Digits | Digits of the number to be added to the front of the dialed number. | Numeric max 16 digits
•E.164 Deletion Count | Number of digits to be deleted from the beginning of the incoming number. | 0 -16
•E.164 Inserted Digits | Digits of the number to be added to the front of the incoming number to convert it to an international E.164 format. | Numeric max 16 digits
Routing Zone Set | -- | Max 31 items
•Dialing Prefix Set ID | Specify the Dialing Prefix Set to this Routing Zone. | 1 - 15
•Announcement Set ID | Specify the Call Unattainable Announcement Set to this Routing Zone.
•MSRN Start | The beginning of the MSRN range for this Routing Zone. | Valid E.164 number
•MSRN End | The end of the MSRN range for this Routing Zone.
•Warning Tone Timer | Specify the time based trigger to play indicating tone for an ongoing prepaid call before the account balance is used up. Unit is second. | 0 - 255 seconds
•SRF 0 Number | The E.164 node address of the SRF connecting to MSS platform 0. | Valid E.164 number
•SRF 1 Number | The E.164 node address of the SRF connecting to MSS platform 1.
> Routing Selection | -- | Max 31 items
•Trunk Group | Select the Trunk Group for the outgoing routing. | 1 - 255
•Alternative TG Flag | Enable or disable alternative Trunk Group when the primary Trunk Group is unavailable. | •Enable •Disable
•Alternative TG | Specify the alternative Trunk Group. It's available only when the previous Alternative TG Flag is enabled. | 0 - 255
•NAI for Outgoing Call | Select the required Network Address Identifier (NAI). The NAI option enables the MSC to perform call routing. | •Unknown •MSISDN •NDD •IDD
•Deletion Count | Number of digits to be deleted from the beginning of the dialed number. | 0 - 16
•Inserted Digits | The digits to be inserted to the front of the dialed number. | Numeric max 16 digits
Trunk Group | -- | Max 1023 items
•Administration State | (Read Only) Control the operation of the managed Trunk Group. | •Locked •Unlocked
•Operation State | (Read Only) Indicate the current Trunk Group operation is qualified by Availability State. | •Enabled •Disabled
•Availability State | (Read Only) Qualify Operation State providing details about the current operational state. | •Failed •Off Line •On Line •Dependency •Degraded
•OPC | The Originating Point Code of the current TG. | ITU = 1 - 16383 ANSI = 1 - 16777215
•DPC | The Destination Point Code of the current TG.
•NI | Network Indicator specifies the Trunk Group to a network. | •National •National Spare •International •International Spare
•Protocol Type | Select the protocol type for this Trunk Group. | •AIF •ISUP •BICC •ISDN •SIP •Static Connection
•Protocol Variant | Select the protocol variant for this Trunk Group. | •ITU •ETSI •ANSI •UK •Q.Sig
•Local Domain | (For SIP) Define the local domain name for a SIP TG. | --
•Destination Domain | (For SIP) Specify the destination domain name for a SIP TG. | --
•Destination IP 0 - 1 | (For SIP) Specify the destination IP address for a SIP TG. | Dotted decimal format
•Destination Port | (For SIP) Specify the destination port for a SIP TG. | --
•Remote Process ISUP | (For SIP) Indicate whether the remote SIP UA is able to process ISUP in SIP-ISUP interworking. | •Support •Not Support
•Incoming SIP Calls TON | (For SIP) Manipulate the type of calling number for a SIP TG. It doesn't take effect when the calling number's attribute is International. It is used for Calling Line Identification Presentation (CLIP) of incoming SIP calls. | •CLIR •Subscriber •Unknown •NDD •IDD
•Circuit Selection | Circuit selection mode of the traffic channel connections. | •Clockwise •Anti-clockwise •Odd •Even
•Back Off Flag | Enable or disable Back Off when simultaneously select the same channel with the opposite side. | •Enable •Disable
•Tandem Restriction | Enable or disable Tandem to allow or prohibit transit calls from PSTN to PSTN via this trunk group.
•CDR Flag | Enable or disable the Call Detail Record generation of this trunk group.
•TG Type | Application type of this Trunk Group. | •Normal •Inter-connection of MSS0 •Inter-connection of MSS1
•RZS ID | Specify the Trunk Group to a Routing Zone Set. 255 = Apply to all Routing Zone Sets | 1 - 31, 255
•Alternative RZS Trigger | Specify the Trunk Group to an alternative Routing Zone Set for backup purpose. 0 = Disable Alternative Routing Zone | 0 - 31
•Ignore MNP Info | (For MNP) In the MNP port-in processing, enable to ignore the optional parameters in the incoming IAM message. | •Enable •Disable
•Signal Ported Number | (For MNP) In the MNP port-out processing, enable to ignore the optional parameters in the outgoing IAM message.
•NFAS Flag | (For ISDN) Enable or disable Non-Facility Associated Signaling with D Channel Backup feature.
•Primary Link | (For ISDN) Specify the primary D channel to control multiple trunks. | One of trunk ID listed in the trunk entries.
•Backup Link | (For ISDN) Specify a backup D channel for use when the primary NFAS D channel fails.
•BSC Codec | Specify the codec type of the BSC. It is available only for circuit BSC. Entry 0 is the highest priority, entry 13 is the lowest. | FR, EFR, AMR
•Echo Control Device Indicator | Indicate including echo control device in outbound IAM message or not. | •Enable •Disable
•Satellite Indicator | Specify the bearing value of the Satellite Indicator in the outgoing ISUP IAM message. •Transit = Use the same value from the incoming ISUP IAM message. | •No Satellite Circuit •One Satellite Circuit •Two Satellite Circuits •Transit
> Trunk | -- | Max 1023 items
•Administration State | (Read Only) Control the operation of the managed Trunk. | •Locked •Unlocked
•Operation State | (Read Only) Indicate the current Trunk operation is qualified by Availability Status. | •Enabled •Disabled
•Availability State | (Read Only) Qualify Operation State providing details about the current operational state. | •Failed •Off Line •On Line •Dependency •Degraded
•MG ID | Specify the Trunk to a Media Gateway. Not applicable to virtual MG. | 1 - 255
•Port ID | Specify the Trunk to a physical port of the selected Media Gateway. Not applicable to virtual MG. | 0 - 31
•Port Type | Specify the type of MG physical ports. | E1, T1, Analogue
•Group ID | Select the application group for the Trunk. •Group0 = Master is MSC0 •Group1 = Master is MSC1 | •Group0 •Group1
•Supervision Method | Specify the type of block request indication delivered in the ISUP trunk initialization process. | •Circuit Group •Circuit
•Link ID | (For ISDN) Specify the corresponding IUA link ID which is configured in the MTP3 setting. | 0 - 1023
•User Network Interface | (For ISDN) Select Q.931 switch type for ISDN call processing. | •Network Side •User Side
•CIC Assignment | Specify the start CIC to the Trunk for typical mode. •E1 = 0, 32, 64 ... •T1 = 0, 24, 48 ... | 0, 32, 64 ... 0, 24, 48 ...
•Channel in Use | (Read Only) Display the quantity of occupied channels of this trunk in real-time. | 0 - 32
> > CIC Table | -- | Max 32 items
•Channel Type | Specify the type of the channel. | •Disable •Incoming •Outgoing •Bi-directional •Lease line •D-channel •X-channel
•Channel CIC | Assign a Circuit Identity Code to the channel. | 0 - 65535
•Channel Status | (Read Only) The current status of the serving channel. | •Out of Service •Idle •Busy •iPALIM Used
•Local Block | (Read Only) Display the block error if the channel is out of service. | •Blocked •Unblocked
•Remote Block
Location Area | -- | Max 1023 items
•LAC | Specify the Location Area Code of this location area. | 1 - 65535
•Trunk Group | Specify the serving Trunk Group of this location area. | 1 - 1023
•Paging Mode | Paging messages broadcast in the specified location area or in the whole network. | •By LAC •By Cells
•Repeat Paging Times | Specify the subsequent paging times if the initial paging fails. | 0 - 3
•NITZ | Network Identity and Time Zone. | --
•Coding Scheme | Indicate that 7-bit or UCS2 coding scheme is used. | •7-bit •UCS2
•Add CI | Indicate whether the MS should add the letters for the Country's Initials to the text string. | •ON •OFF
•Network Name | A text string is to pass to the MS via NITZ. | --
•Time Update Option | Determine whether time and time zone info is transferred to MS via NITZ. | •None •Time Zone •Time Zone and Time
•Time Zone | Specify the local time zone. | GMT-12:00 - GMT+13:00
•Daylight Saving Time | Enable or disable the daylight saving time adjustment. | •No Adjustment •+ 1 Hour •+ 2 Hours
•Emergency Number 0~7 | The emergency number, which subscriber dialed in the specific Location Area, will be transformed to this number and route to the emergency center. | 3 - 16 digits
> Cell | -- | Max 15 items
•RZS ID | Specify the Routing Zone Set ID to this Cell. | 1 - 31
•RSZC | Assign a Regional Subscription Zone Code to the LAC. Regional Subscription Zone Code = CC+NDC+Zone Code | 0 - 65535
•Cell ID | Global Cell Identity defined in GSM 03.03 | 0 - 65535
•Latitude | Specify the latitude of this cell for a location service use. | -90.00 to 90.00
•Longitude | Specify the longitude of this cell for a location service use. | -180.00 to 180.00
•Emergency Number 0~7 | The emergency number, which subscriber dialed in the specific Cell, will be transformed to this number and route to the emergency center. | 3 - 16 digits
Media Gateway | -- | Max 255 items
•Administration State | (Read Only) Control the operation of the managed MG. | •Locked •Unlocked
•IP | IP address of the MG. | Dotted decimal format
•Domain Name | Specify a domain name to the Media Gateway. | --
•Switching Mode | Select the switching mode of the specified MG. •8ECP = Circuit Switch (8KE1) •MGCP = Soft Switch (MG) | •8ECP •MGCP
•Endpoint | Specify the method of MGCP endpoint description. | •Structured •Unstructured •Unstructured Hex
•Tone Generation Capacity | Enable if the Media Gateway has tone generation capability. | •Enable •Disable
•MG Type | Select the type of MG endpoint. | •IP BSS •VIM •Digital Channel •AudioCodes •Announcement Server •IVR •Conference Bridge •Packet Relay •Wiretap •ATM
•Max Ports | The total physical port number of the MG. Not applicable to virtual MG. | 0 - 31
•Max Channels | The total channel number of the virtual MG. Applicable to virtual MG only. | 0 -1023
•Packetization Period | The period over which encoded voice bits are collected for encapsulation in. | •20ms •40ms •60ms •80ms
•Priority Level | Set the priority level of the MG codec table: •0 = Lowest priority level •255 = Highest priority level | 0 - 255
•Codec Type | Specify the preferred codec type using between MG and MSC. Entry 0 is the highest priority, entry 15 is the lowest. | •A-Law •Mu-Law •FR •EFR •AMR •G729
•Audit Timer | The time interval between sending AUEP message from MGC to MGW to check the trunk status. Unit is second. Set 0 to disable. | 0 - 255
> Port | -- | Max 32 items
•Used Flag | (Read Only) The status of the MG port. | •Idle •In Use
•Status | (Read Only) The status of the serving channel. | •Ready •Not Ready
•Seizure Trunk | (Read Only) The hyperlink of the bound Trunk for the in use MG port. •Format = Trunk <TG ID>-<Trunk ID> | --

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