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Business phone comparison

Auto Attendant vs 8x8

A practical comparison of 8x8 with a single inbound menu that rings your team’s existing mobiles. Start with the plan that actually includes a phone menu, then decide which extra calling tools you need.

Last checked 14 October 2026 · 4 cited sources

Comparing business phone services

The two products in one sentence

Auto Attendant: one business number, a spoken menu of up to seven options, and forwarding to existing mobiles for $29/month for the company. It handles incoming calls, including a closed message after hours and voicemail by email, but does not place outgoing calls, send texts, record conversations or provide desk phones or apps.

8x8: 8x8 is an administered communications platform with international reach, queues and recording, priced through a sales quote.

What the vendor publishes

Menu-plan price: No public menu-tier price.

Is an installed app required to take calls? Not if you answer in a browser; apps are offered.1

8x8 presents X2 as its business phone offer and asks buyers to talk to sales for a price.1

The business phone page lists a multi-level auto attendant, call recording, voicemail, ring groups and call queues.1

8x8 documents desktop/mobile apps and a browser option for using 8x8 Work.1

What one, three, five and seven people cost

8x8’s X2 public page requests a sales quote, so no reliable team total or crossover can be calculated.

The Auto Attendant price is $29/month for the whole company, billed monthly, with no per-person charge: up to seven menu options, each ringing up to three phones in turn. See exactly what is included.

How a call reaches your team: 8x8 and Auto Attendant

The practical difference is where the work happens. With Auto Attendant, a caller dials one business number, hears a spoken menu, presses a key and the call rings the chosen person's own mobile (or up to three phones in turn) as an ordinary incoming call showing the business number; nobody installs an app, and the team keeps its existing mobile plans. How it works shows the whole path, and the auto attendant and IVR glossary entries separate a simple keypad menu from a full interactive voice response system.

  • Who answers: on whether 8x8 needs an installed app to take calls, the cited source says: not if you answer in a browser; apps are offered.1 Auto Attendant rings the phones people already carry.
  • How it is billed: 8x8 did not publish a plan-level price we could tie to a phone menu, so the cost of putting a menu in front of a team has to be quoted. Auto Attendant is one $29 monthly charge for the company.
  • What the menu can do: compare the routing options in the facts above with the call routing Auto Attendant offers; 8x8's tools may be broader, and the question is whether you will configure and pay for the extra breadth.
  • What Auto Attendant leaves out: it handles incoming calls only, so it does not place outgoing calls, send or receive texts, record conversations, ring several phones at once or provide queues; those belong to full platforms such as 8x8, compared in general on auto attendant vs VoIP platforms.

Questions to ask 8x8 before you buy

Plan names and entitlements change often, so treat the page you read as a snapshot and put these questions to 8x8 before you sign. The answers decide whether the comparison on this page still holds.

  • Which plan includes the phone menu, and is the quote for that plan? 8x8’s X2 public page requests a sales quote, so no reliable team total or crossover can be calculated.
  • Does every person who answers a call need a paid seat? Ask how the plan counts users, extensions and shared numbers, because that count drives the bill.
  • What is the billing basis? Ask for the monthly-billing price, the term and the renewal rule. Taxes, regulatory fees and any usage charges are normally extra.
  • What happens when nobody answers? Test the fallback: a menu option that rings a mobile in a no-signal area should fall through to voicemail, not to a busy tone. The no-answer timeout and overflow entries define the terms, and the call queue and ring group guide shows an all-busy test.
  • How is the existing number moved? Ask for the porting steps, the information you must supply and the expected interval; the rules below set the minimum for ordinary numbers.4 Our porting guide lists what to collect first.
  • How is each user's emergency address set? See the checks below and our emergency calling page before putting any phone service in front of staff.

Emergency calling and number porting checks

Two federal rules apply to any phone service you buy, so ask 8x8 how it meets them. First, emergency calls. Kari's Law requires a multi-line telephone system to be configured so that a user can dial 911 directly, without a prefix such as the digit 9, and to provide on-site notification of the call where the system can be configured to do so.2 The FCC's definition of a multi-line telephone system covers network and premises-based systems, including Centrex, VoIP and PBX, and defines a dispatchable location as the validated street address of the calling party plus the suite or similar detail needed to identify where they are.3 A hosted phone with several users is therefore a system to check for these points, whichever vendor it comes from. See the E911, MLTS and dispatchable location glossary entries.

Second, porting. Carriers required to port numbers must complete a simple wireline-to-wireline or intermodal port within one business day, and a non-simple port within four business days, unless the new provider or the customer asks for longer; ports involving interconnected VoIP service count as intermodal.4 That is a ceiling on carrier delay for ordinary numbers, not a promise about 8x8's own onboarding, so ask for the vendor's expected date in writing. Read the local number portability and letter of authorization definitions, and the porting-time article for realistic intervals.

What the flat $29 line gives you

For a single incoming number that routes to existing handsets, a published flat monthly price is easy to budget. Calls ring as ordinary incoming calls; people use their own mobile plan and dialler, and nobody needs a seat or an app. You pick the number, write the menu in English, French or Spanish (or up to all three) and set business hours online in the app. Voicemails arrive by email with the MP3 attached, and the transcript follows in a second email, in the voicemail's own language. See the complete call path and the $29 plan.

Incoming calls routed to your team’s mobiles
Pick a number, build the menu and publish it in the app, for $29 a month per line.
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Further reading

Longer research pieces on this topic, each with its own source list and a downloadable PDF.

Sources

Every regulatory and pricing claim on this page links to the primary source it came from. Figures were checked on the date shown at the top of the page; rules and prices change, so verify before relying on one.

  1. 8x8: 8x8 presents X2 as its business phone offer and asks buyers to talk to sales for a price. Retrieved 14 Oct 2026
    https://www.8x8.com/products/business-phone
  2. Kari's Law Act of 2017, Public Law 115-127 (direct 911 dialing from multi-line telephone systems and on-site notification). Enacted 16 February 2018
    https://www.congress.gov/115/plaws/publ127/PLAW-115publ127.pdf
  3. 47 CFR § 9.3, Definitions (multi-line telephone system, dispatchable location). Retrieved 14 Oct 2026
    https://www.law.cornell.edu/cfr/text/47/9.3
  4. 47 CFR § 52.35, Porting intervals (one business day for a simple port, four for a non-simple port). Retrieved 14 Oct 2026
    https://www.law.cornell.edu/cfr/text/47/52.35