VOS3000-FAQ-VOS3000-Original_English_Manual_Guide_Download
This article provides a comprehensive list of frequently asked questions (FAQs) strictly based on the official VOS3000 Soft switch PDF Manual (V2.1.9.07). All explanations reflect real system behavior, configuration options, and operational logic described in the documentation, including routing, billing, SIP signaling, CDR handling, alarms, and system parameters.
VOS3000 is a carrier-grade VoIP soft switch platform designed for telecom operators and VoIP service providers. It integrates call control, routing management, billing, account management, SIP signaling, and CDR processing into a unified system.
According to the manual, VOS3000 is deployed on Linux server environments. Stable Linux distributions are recommended to ensure performance, reliability, and compatibility with system services.
VOS3000 supports SIP and H.323 signaling protocols. These protocols are used for call setup, termination, authentication, and interoperability with gateways, carriers, and SIP devices.
Call routing in VOS3000 is prefix-based. The system compares destination number prefixes with routing rules, gateway priorities, rate tables, and availability to determine the most suitable route.
Yes. VOS3000 includes Least Cost Routing functionality that selects routes based on the lowest rate per second, while also considering gateway priority and routing quality.
A routing gateway represents an outbound route toward a vendor or carrier. It includes IP address, protocol settings, line limits, billing account association, and routing priority.
A mapping gateway represents inbound traffic sources. It maps incoming calls from a specific IP or device to an account and applies authentication, billing, and routing rules.
Gateway groups are used to combine multiple routing and mapping gateways into a single logical group, allowing capacity control, routing restrictions, and simplified management.
Yes. VOS3000 allows administrators to set line limits at gateway, gateway group, and account levels to restrict the number of concurrent calls.
If a routing gateway fails or becomes unavailable, VOS3000 automatically attempts the next available route based on priority and routing rules.
VOS3000 generates a CDR for each call attempt. The record includes caller number, callee number, start time, end time, duration, gateway IDs, billing mode, and termination reason.
When enabled, CDRs are written to text files in the CDR directory under the VOS3000 installation path. Files are generated hourly using a timestamp-based naming format.
Yes. VOS3000 performs real-time billing by deducting call charges from account balances during the call. Calls are terminated automatically if balance limits are exceeded.
Billing can be performed by phone number, gateway ID, or phone card, depending on account configuration and call source.
An account represents a customer or vendor entity. It controls balance, billing rules, routing permissions, credit limits, and authentication parameters.
Agent accounts can have sub-accounts. Charges incurred by sub-accounts are aggregated to the agent account, allowing hierarchical billing structures.
Rate tables define call pricing based on destination prefixes. They are assigned to accounts and routing gateways to calculate call charges.
Yes. Forbidden prefixes can be configured to block calls to specific destinations, such as premium or high-risk numbers.
VOS3000 supports number transformation rules that allow adding, removing, or replacing digits before routing or billing.
Authentication can be performed using SIP credentials or IP-based authentication, depending on the gateway and account configuration.
Yes. SIP OPTIONS messages can be sent periodically to detect gateway availability. If a gateway fails OPTIONS checks, it is temporarily excluded from routing.
VOS3000 supports common VoIP codecs such as G.711 and G.729, configurable at gateway and protocol levels.
NAT traversal features include keep-alive messages, SDP address handling, and media proxy settings to ensure stable SIP communication.
The system allows configuration of billing time precision, determining how call duration is rounded for billing purposes.
Yes. Work calendars and time-based rules allow administrators to restrict calls during specific hours or non-working periods.
VOS3000 includes alarm monitoring for gateway status, balance thresholds, system errors, and abnormal traffic conditions.
System logs and history alarm tables are stored in the database and can be accessed through the data maintenance interface.
Anti-overdraft mechanisms prevent accounts from exceeding allowed balances by checking credit availability before and during calls.
Bilateral reconciliation compares billing amounts between customers and vendors to detect deviations automatically.
Yes. For number portability, VOS3000 supports LRN queries to external servers and can route calls based on returned LRN numbers.
HTTP call status notifications can be enabled to send call events to external systems for integration purposes.
Rate limiting restricts the number of call attempts within a defined period to protect the system from abuse or attacks.
Yes. SIP headers such as P-Asserted-Identity and P-Preferred-Identity can be passed through, modified, or replaced based on configuration.
Call failure causes are recorded in CDRs and categorized by server-side, SIP device, or network-related termination reasons.
Packages define free duration, free money amount, rent period, and minimum consumption rules applied before standard billing.
Package priority determines which package takes effect first when multiple packages are assigned to an account.
Yes. Payments can be applied manually or via phone cards, affecting account balance and expiration.
Billing reports include account balance, gateway bills, phone bills, area details, and statistical summaries.
The operation wizard provides guided steps to quickly configure common scenarios such as gateway-to-gateway or phone-to-routing setups.
Yes. Multiple IPs and ports can be configured per gateway, with automatic selection based on availability.
SIP authentication retry defines how many times the system retries authentication when receiving unauthorized responses.
Voicemail features include configurable storage duration, maximum message count, and default welcome prompts.
Post Dial Delay (PDD) measures the time from call initiation to call connection and is recorded in CDRs.
Yes. The system can be configured to ignore CDRs with zero hold time to reduce unnecessary records.
Billing precision and monetary units can be configured to support different currency formats.
Signaling tracing allows administrators to trace call setup, registration, and termination messages for troubleshooting.
VOS3000 is designed for carrier environments and can handle high concurrent call volumes when deployed on appropriate hardware.
Database backup and maintenance functions help protect configuration, billing, and call data.
Performance monitoring includes gateway status, call statistics, alarm monitoring, and traffic analysis.
VOS3000 is suitable for VoIP carriers, telecom operators, wholesalers, and enterprises requiring advanced call routing and billing control.
Full manual download link : https://vos3000.com/downloads/VOS3000_21907_Manual_Original_English_Full_VOS3000.Com_PDF.pdf
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