Local Telephone Carriers Industry Terminology

We disconnected 2,300 legacy access lines this quarter; The fire panel must be on a dedicated access line; Access line counts influence our state USF assessment.

We can extend service 12k feet from the CO with ADSL; Marketing is retiring ADSL tiers in favor of VDSL2; The ADSL port on the DSLAM is in alarm.

Confirm the ALI record reflects the new suite number; The PSAP queried ALI using the caller’s ANI; Our 911 provider handles ALI database updates nightly.

The PSAP received the caller’s ANI but not the location; Toll billing relies on accurate ANI; Our SS7 traces show incorrect ANI presentation.

Fiber ARPU is 1.7x higher than copper ARPU; A price increase lifted voice ARPU by $1.20; We track ARPU by product bundle and by footprint.

We need 10G backhaul from the OLT to the core; The DSLAM backhaul is congested at peak hour; Microwave backhaul is a temporary solution until fiber is built.

Upgrade the customer from 100 Mbps to 1 Gbps bandwidth; The SLA commits bandwidth and latency targets; Bandwidth utilization hit 85% during the busy hour.

The order stalled due to a mismatch between BSS and OSS; We’re replacing our legacy billing BSS; OSS will auto-generate a trouble ticket when the ONT goes dark.

2025 CAPEX is weighted to FTTH outside plant; Capitalize the OLT cards under network CAPEX; We’re shifting CAPEX from copper rehab to fiber builds.

Fraud analytics flagged abnormal CDR patterns; We reconciled the invoice against interconnect CDRs; CDRs show average call duration dropped after the outage.

The CLEC requested collocation in our CO; A CLEC-to-ILEC port requires an LSR; We wholesale UNE loops to several CLECs.

Annual CPNI certifications are due to the FCC; Don’t use CPNI for marketing without consent; A breach involving CPNI must be reported under the rules.

We leased two strands of dark fiber to the school district; The route has 24 spare dark fiber strands; An IRU secures long-term dark fiber access.

The remote DSLAM feeds 192 copper pairs; We’ll uplink the DSLAM at 10 Gbps to the aggregation; The DSLAM card failed, taking down 48 subs.

E911 routed the call to the wrong PSAP due to an old address; We validated E911 records after the customer moved; The PSAP requested E911 re-bids to update location.

We’re seeking ETC designation to offer Lifeline; The state PUC approved our ETC application; ETC status requires meeting service quality obligations.

Our FTTH build passes 8,000 homes this year; FTTH ARPU exceeds copper ARPU by 60%; We’re using XGS-PON for greenfield FTTH.

We’ll overbuild FTTN areas with FTTH; The RFP covers FTTC for 12 MDUs; FTTx migration reduces loop maintenance costs.

Split ratio is 1:32 on our GPON network; We provision 2.5G/1.25G GPON ports today; GPON ONTs will be upgraded to XGS-PON.

The trunk group is engineered for P.01 GoS; Busy-hour call attempts exceeded our GoS target; Increase trunks to restore GoS after growth.

We scheduled hot cuts for 30 loops overnight; A bad jumper caused a failed hot cut; CLEC hot cuts must meet the 10-minute outage target.

As the ILEC, we own most local loops in this LATA; The ILEC must offer UNEs under 251(c); Our ILEC territory excludes the new subdivision.

Bill-and-keep reduced our access revenues; We disputed intercarrier compensation on VoIP traffic; Terminating access rates will step down next year.

The ICA sets our POI locations and trunking; We renegotiated the interconnection agreement rates; Disputes are resolved per the ICA’s arbitration clause.

High jitter lowered MOS on VoIP calls; Enable jitter buffer on the SBC; The circuit meets latency but fails jitter limits.

One-way latency must be under 50 ms for voice; The fiber reroute added 5 ms latency; SLA credits apply if latency thresholds are missed.

The port is pending FOC from the losing carrier; We submitted the LSR to initiate LNP; The NPAC subscription activated and calls now route correctly.

We replaced a 3,000-foot copper loop with fiber; Noise on the local loop reduced DSL sync; The local loop terminates on the MDF.

Make-ready is required before we can attach to the pole; The utility’s make-ready timeline is 60 days; We budgeted for make-ready across 200 poles.

The new area code overlays under the NANP; Ensure NPA-NXX assignments follow NANP rules; Ten-digit dialing is required after the NANP overlay.

Update the NPAC with the new LRN before cutover; The NPAC subscription wasn’t activated; We queried NPAC to troubleshoot misrouted calls.

Add a 16-port XGS-PON card to the OLT; The OLT uplinks at 100 Gbps; OLT port utilization hits 70% at busy hour.

The ONT provides two POTS ports and one 2.5G Ethernet; Battery backup keeps the ONT live for E911; The ONT LOS light indicates fiber trouble.

The elevator requires a POTS line; We’re retiring copper POTS in favor of POTS-over-fiber; Fax reliability is higher over POTS than OTT VoIP.

The PSTN still uses SS7 for signaling; Interconnect calls route between our IP network and the PSTN; We’re decommissioning PSTN TDM trunks as SIP ramps.

Tag voice with EF for QoS priority; The SLA includes QoS metrics for jitter and loss; Enable QoS queues on the access switch for SIP/RTP.

The RBOCs became today’s large ILECs; Our RBOC interconnect is at two POIs; RBOC tariff changes affect access rates regionally.

We won three RDOF census blocks; RDOF milestones require 40% build by year three; CAF II areas may be excluded from RDOF bids.

We obtained ROW permits from the city; The ROW license fee impacts our build economics; The railroad ROW crossing requires extra insurance.

Place the SBC at the SIP demarc; SBCs enforce topology hiding and rate limits; We added a second SBC for redundancy.

We migrated PRI trunks to SIP trunking; The SIP INVITE contains the caller ID; Debug the 488 response in the SIP trace.

Our SS7 links terminate on dual STPs; ISUP messages carry the call setup in SS7; We’re replacing SS7 TDM trunks with SIP interconnects.

Our SBC signs outbound calls with A-level attestation; STIR/SHAKEN reduced illegal spoofing complaints; Verify the PASSporT token in the SIP header.

Check the intrastate tariff for that rate; We moved from tariffs to price lists in this state; Tariff filings require PUC approval.

PSTN trunks are still TDM in some COs; We’re grooming DS1s off the TDM switch; TDM circuits provide 64 kbps DS0 channels.

The CLEC ordered an unbundled loop UNE-L; UNE rates are set in our interconnection agreement; We discontinued UNE-P years ago.

USF contributions are based on interstate revenues; We enrolled customers in Lifeline under USF; E-Rate is one of the USF programs we support.

We deliver VoIP over managed fiber with QoS; OTT VoIP depends on best-effort Internet; The PBX registers to our VoIP platform via SIP.

We sell wholesale Ethernet to CLECs; Wholesale agreements include SLAs and credit terms; The wholesale group manages interconnect billing.

New builds will standardize on XGS-PON; XGS-PON delivers symmetric 10G per PON; We’re migrating high-usage subs from GPON to XGS-PON.