Individual NAP Statistics

Network Access Point (NAP) statistics provide per-trunk visibility into your voice traffic. MaaS auto-discovers all enabled NAPs and monitors 26 metrics for each.


Supported NAP Types

MaaS monitors all NAP types:

NAP Type
Protocol
Notes

SIP

SIP over UDP/TCP/TLS

Includes registration monitoring

H248 RTP

H.248/MEGACO (IP media)

RTP port ranges

H248 TDM

H.248/MEGACO (TDM media)

Line services

ISUP

SS7 ISUP

CIC groups

ISDN

Q.931 ISDN

PRI/BRI stacks

CAS

Channel Associated Signaling

CAS stacks


NAP Status Metrics

Statistic
Type
Description

Availability

Percentage

Percentage of available resources (0-100%)

State

Status

Overall NAP state (Up / Partially Up / Down)

Usage

Percentage

Current resource utilization

Congestion

Text

Congestion status indicator

Registration State

Text

SIP registration status (SIP NAPs only)

NAP State Values

Value
Meaning

Up (100%)

All resources available

Partially Up (1-99%)

Some resources unavailable

Down (0%)

No resources available


Real-Time Call Metrics

Current call counts for each NAP:

Statistic
Units
Description

Total Calls

Calls

Active calls on this NAP

Incoming Calls

Calls

Current inbound calls

Outgoing Calls

Calls

Current outbound calls


Call Counters (Per Interval)

These counters show call activity since the last polling interval.

Call Attempts

Statistic
Direction
Description

Incoming Call Count

Incoming

Inbound call attempts

Outgoing Call Count

Outgoing

Outbound call attempts

Accepted Calls

Statistic
Direction
Description

Incoming Accepted

Incoming

Accepted inbound calls

Outgoing Accepted

Outgoing

Accepted outbound calls

Answered Calls

Statistic
Direction
Description

Incoming Answered

Incoming

Answered inbound calls

Outgoing Answered

Outgoing

Answered outbound calls


CPS Metrics (Per NAP)

Calls per second calculated for each NAP:

Statistic
Direction
Description

Incoming CPS

Incoming

Inbound call rate

Outgoing CPS

Outgoing

Outbound call rate

Incoming Accepted CPS

Incoming

Accepted inbound rate

Outgoing Accepted CPS

Outgoing

Accepted outbound rate

Incoming Answered CPS

Incoming

Answered inbound rate

Outgoing Answered CPS

Outgoing

Answered outbound rate


Drop Statistics

Call drops categorized by cause:

Statistic
Description

Local Drops

Calls dropped by the local system

Remote Drops

Calls dropped by the remote party

System Drops

Calls dropped due to system issues

Drop counters show the delta since the last interval and include a 10-minute heartbeat to reduce noise during idle periods.


Calculated Statistics

MaaS calculates additional metrics for capacity planning:

Statistic
Description

Last Hour Max

Maximum concurrent calls in the past hour

Last Hour HWM

Rolling high water mark


NAP Alerts

High Severity

Alert
Condition
Description

NAP Registration Failed

Registration ≠ "Yes"

SIP trunk lost registration (SIP NAPs only)

Info Severity

Alert
Condition
Description

NAP Down

Availability = 0%

NAP has no available resources


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SIP Registration Monitoring

For SIP NAPs configured with outbound registration (register_to_proxy enabled), MaaS monitors:

  • Registration State: Current registration status (Yes/No)

  • Automatic Alerting: HIGH severity alert when registration fails

This is critical for detecting trunk failures with carriers that require registration.


Understanding NAP Metrics

chevron-rightAvailability vs Usagehashtag
  • Availability: What percentage of resources can be used (health indicator)

  • Usage: What percentage of resources are being used (load indicator)

A NAP can have 100% availability but low usage (healthy, light traffic) or high usage with declining availability (approaching capacity limits).

chevron-rightDrop Analysishashtag

Comparing drop types helps identify issues:

  • High Local Drops: May indicate configuration issues or resource exhaustion

  • High Remote Drops: May indicate far-end issues or network problems

  • High System Drops: May indicate system resource issues

chevron-rightPer-NAP CPShashtag

Monitoring CPS per NAP helps identify:

  • Which trunks are handling the most traffic

  • Load imbalances between NAPs

  • Traffic patterns for specific carriers or routes

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