WhatsApp Calling

Open WhatsApp. Find the Guild contact. Tap the call button — the same one you’d use to call a friend. Tola answers. That’s it. No separate phone number to remember. No app to install. No browser. Just the call button in the chat you already have open.

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Why this is useful

Three things make this rail valuable for users.

1. It’s free over Wi-Fi. No call charges from your carrier when you’re on Wi-Fi. Useful when you don’t want to spend airtime to ask a question.
2. It’s already in your hand. You’re often already messaging Guild. Tapping the call button is one tap from where you already are.
3. The audio quality is excellent on a decent connection. WhatsApp’s voice codec is good. Tola comes through clearly even on mid-bandwidth networks.

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How it actually works

The user-facing experience is “tap to call.” The technical reality is a SIP bridge that lands the call on our voice agent. You don’t notice any of this. From your end, you tapped a button and Tola was on the other side a moment later. The detail behind the bridge is at SIP infrastructure.

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What Tola can do on a WhatsApp call

Same six tools as a PSTN call:

• Sign up (if you’re new)
• List open jobs (Job Seekers)
• Get job details
• Apply to a job
• Update your profile
• Set your skills

Same Nigerian English. Same code-switching. The conversation is identical to a regular phone call. Tola doesn’t know (or care) which rail you’re on. The voice runtime treats both the same.

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When this rail is better than text

Three scenarios:

1. You can’t type well in the language you speak. A user who speaks Yoruba fluently but writes English with difficulty finds voice faster than text.
2. You want a complex answer that’s awkward in text. “What jobs match a tiler with three years of experience who can travel up to 20km from Mokola?” takes a minute in voice. The text equivalent is filling out a Flow.
3. You’re walking or working and your hands aren’t free for typing. Voice with a Bluetooth earpiece works while you’re walking to the site.

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When text is better

The reverse scenarios:

1. You need a record of the answer. Text persists in the chat; voice doesn’t unless you remember to re-listen.
2. You’re in a noisy environment. Construction site, crowded market, danfo. Text wins.
3. The question is short and the answer is short. “balance” → “₦12,000.” Text is one second; voice is twenty seconds.

Most users mix both. Voice for discovery and complex decisions; text for short queries and confirmations.

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Network requirements

Wi-Fi is best. Mobile data of any quality (2G, 3G, 4G, 5G) works for WhatsApp Calling, with voice quality degrading on weaker connections. The codec inside the bridge (PCMU at 64 kbps) is bandwidth-efficient. Tola’s voice is clear even on 2G.

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What this costs you

Whatever WhatsApp’s call data is on your plan. Most carriers in Nigeria don’t bill WhatsApp Calling separately from data; it counts against your data bundle. For a typical Tola call (under 2 minutes), the data usage is under 1 MB. If you’re on a “WhatsApp pack” from your carrier (free WhatsApp data), the call costs nothing.

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When it doesn’t work

Three failure modes:

1. Meta WhatsApp Calling is down regionally. Rare. You’ll see the call fail to connect in WhatsApp’s standard error.
2. Our SIP bridge is temporarily unavailable. Even rarer. We monitor and have automatic failover.
3. Your data connection drops mid-call. Standard WhatsApp call behaviour — the call ends. Reconnect and try again.

In all three cases, you can fall back to text or to a regular phone call to the Guild number.

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Privacy

Same as any voice call. The audio is encrypted in transit (TLS for signalling, SRTP for media). Recordings are 30-day retention. Transcripts may persist longer. You can ask Tola not to record at the start of the call; she’ll honour it.

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Where to read more