Built for phone audio
Pāṇini TTS is trained for 8 kHz phone audio. That is the narrowband sound of an ordinary mobile call, not studio audio.
Enterprise · Operations
Driver, rider and consignee calls at fleet scale.
Delivery, failed-delivery and driver calls in the languages your consignees and drivers speak, with each outcome written back to your systems.
8 kHz
Telephony-grade training
36+
Indian languages
10,000
Concurrent calls
Why it works here
Sonex for logistics and mobility teams
Driver onboarding and compliance
Document chase, verification and shift confirmations handled automatically in the driver's language.
Consignee coordination
Delivery windows confirmed before the vehicle leaves, so fewer attempts fail because nobody was home.
Use cases
Common first use cases
- →Delivery window confirmation
- →Driver onboarding and verification
- →Shift and route notifications
- →Exception and delay handling
- →Proof of delivery follow-up
Call scripts to start from: failed delivery (NDR) follow-up script, COD order confirmation script, in Hindi, English and regional languages.
How the calls work
How delivery, failed-delivery and driver calls run
Consignee calls confirm or rescue a delivery. Driver and rider calls cover documents and shifts. Each ends with a status your dispatch or onboarding system can act on.
Delivery window confirmation
Before the vehicle leaves the hub.
- 01The agent names the courier or brand, says it is an AI assistant, and gives the delivery day and window.
- 02It asks whether someone will be there to receive the parcel, and takes a landmark or alternate contact if the address is vague.
- 03If the window does not suit, it offers only slots your route planner allows.
Written back: confirmed, rescheduled, address detail added, or unreachable.
Failed delivery (NDR) follow-up
Within hours of a non-delivery report from the field.
- 01The agent says the attempt failed and asks why: not at home, address not found, or refused.
- 02It fixes the address or picks a new slot. A refusal gets a reason, so the parcel can return without more attempts.
Written back: reattempt with slot or address, refused with reason, or no contact.
Driver documents and shifts
After sign-up, before a document expires, or ahead of a shift.
- 01The agent calls in the driver's language, says which document is missing or due, and sends an upload link through your system.
- 02For shifts and routes it confirms the time and place, and passes delays and exceptions to a dispatcher by live transfer.
Written back: document promised by a date, uploaded, shift confirmed or declined, or exception raised.
Rules that apply
Rules for courier, logistics and mobility calls
TRAI has given courier and logistics firms their own number series, and its 2026 amendment covers every call dialled by software, including calls that later reach a person.
Opening lines with the AI disclosure are in the disclosure script library, and calling rules by country sets India beside other markets.
The 1601 series for courier and logistics
TRAI created the 1601 series for service calls from courier, parcel, freight and logistics companies, and operators are to finish moving them by about 8 November 2026. The numbers go directly to the business, not to an aggregator, and may never carry promotional calls, so sales campaigns need 140 numbers (number series guide, number series picker).
Mobility firms without a series
Phase I covers utilities and firms that deliver consignments; passenger mobility firms such as ride-hailing are not named. Their service calls still go out on ordinary numbers, which are not exempt from TRAI's A2P charge of up to ₹0.05 a minute between operators and can be flagged as spam.
The A2P declaration covers every dialler
Every call dialled by software is an A2P call, even when a person joins later. From 27 November 2026, declare A2P calling and every caller number range to your operator, including numbers a platform dials for you, and agree in writing who declares which ranges (TRAI's 2026 rules).
Caller name on screen and personal data
From 1 November 2026, operators must show the caller's name on 4G and later calls, but whether this covers SIP trunks and designated series is unsettled, so ask each operator (CNAP guide). Addresses and driver documents are personal data under the DPDP Act, whose main duties start on 13 May 2027.
Before go-live
What logistics teams prepare before going live
Events and fields
Connect the dispatch, NDR and onboarding events that start each call, and the fields the agent reads: consignee, address, slot, AWB or order number, and pending documents.
1601 numbers in your name
1601 numbers go only to the business itself, and Sonex's shared numbers are not 1601 numbers. Run the agent on telephony from your own operator and include every range in your A2P declaration.
Field-condition tests
Test with drivers and consignees on real mobile calls, outdoors and on basic handsets, in each language you will use. Check addresses, landmarks and AWB numbers by ear.
Hand-over to dispatch
Name the dispatchers who take live transfers for delays and exceptions, and the hours they cover. Outside those hours, the agent offers a callback time.
FAQ
Questions logistics teams ask about AI calls
Rates are on the pricing page, and the cost calculator works out a monthly figure for your call volume.
Yes, within the slots you allow. The agent reads the open slots from your route planner through a tool call, offers them to the consignee and writes the chosen slot back. Anything it cannot settle, such as a damaged parcel or a dispute, goes to a dispatcher by live transfer.
If software dialled it, yes. TRAI refused requests to exclude calls where a person joins later, such as ride-hailing bridges, because operators cannot tell which software-dialled calls have a person on them. From 27 November 2026, declare A2P calling and the number ranges you use to your operator.
From 1 November 2026, mobile operators must show the caller's name on calls over 4G and later networks, taken from the operator's records for that number. Whether this reaches SIP trunks and designated number series is not settled, so ask each operator in writing which name will show on each of your numbers.
Pāṇini TTS is trained for 8 kHz phone audio, the narrowband sound of a mobile call, and Valmiki STT detects the spoken language automatically. Road noise and weak signal still vary, so test with your own drivers on real mobile calls before you rely on it, and give them a way to reach a dispatcher.
Each call is kept as a recording and a transcript. The agent writes the outcome, such as a new slot, a corrected address or a missing document, back to your systems through tool calls or a connector such as n8n, Zapier or Make.
Compliance
Security and compliance controls
Encrypted in transit and at rest, tenant isolated and fully audit logged.
GDPRCCPAHIPAA-readyDPDPRBACE2E encryptedFull audit trailsMulti-tenant isolation
Other industries
AI voice agents for other industries
Every industry runs on the same stack: see voice agent pricing per minute, hear Pāṇini text to speech in 250+ languages, or browse the full language list.
BFSI
Banking and lending
Collections and servicing in the borrower's own language.
Clinical
Healthcare
Patient conversations that respect language and privacy.
BFSI
Insurance
Renewals, claims and verification at policy-book scale.
Consumer
E-commerce and retail
Order, delivery and returns support in every regional market.
Sales
Real estate
Property enquiries called back, qualified and booked for a visit.
Talk to someone who has deployed this before.
A working conversation about your use case, your stack, and what it realistically takes to go live.