The choice between these models depends on three factors: whether you already have a CCaaS platform (Genesys, NICE CXone, Five9, Talkdesk), how important real-time AI transcription and analytics are to your operation, and whether you want to consolidate telephony billing under Salesforce/Amazon or maintain direct carrier relationships.
For new contact-centre deployments without an existing CCaaS investment, Voice with Amazon Connect provides the fastest path to an integrated solution. For enterprises with established CCaaS platforms, Voice with Partner Telephony preserves your telephony investment while adding the Salesforce-native AI and routing layer. For cost-sensitive deployments where AI transcription isn’t critical, Open CTI provides basic integration at no additional Salesforce cost, though you lose the features that make Voice compelling.
3. Cost Layer 1: Salesforce Licence Fees
The Salesforce component of Service Cloud Voice is a $75/agent/month Salesforce add-ons worth paying for PSL on top of your base Service Cloud licence. This means every agent using Voice needs both a Service Cloud licence (Enterprise at $165/user/month list, or Unlimited at $330/user/month) and the Voice PSL. The combined Salesforce-only cost before any telephony charges is $240/agent/month at Enterprise list pricing.
Three critical points for procurement teams:
The Voice PSL is required for both deployment models (Amazon Connect and Partner Telephony). If you’re using Partner Telephony, you still pay Salesforce $75/agent/month for the Voice integration layer, transcription, and analytics — even though your telephony is running through a third party. This surprises enterprises that assume the $75 covers telephony itself.
The PSL is per-agent, not per-concurrent-user. If you have 200 agents who use Voice, you need 200 Voice PSLs, regardless of how many are logged in simultaneously. This is a named-user model, not a concurrent model. For contact centres with significant part-time or shift-based staffing, this inflates the per-productive-hour cost considerably. A 200-agent centre with only 120 concurrent agents at any time is still paying for 200 Voice PSLs.
Volume discounts are available but not automatic. Like all Salesforce PSLs, Voice pricing is negotiable. Our benchmark data shows enterprise Voice deployments achieving 20–35% off the $75 list price when Salesforce negotiation tipsed as part of a broader Service Cloud deal. Standalone Voice PSL purchases typically receive minimal discounting. Always bundle Voice into your base Service Cloud negotiation. For broader feature licence guidance, see our dedicated guide.
4. Cost Layer 2: Amazon Connect Consumption
For Voice with Amazon Connect deployments, Amazon’s consumption charges represent the largest and most variable cost component. Amazon Connect uses pay-per-use pricing with no minimum commitments, which sounds cost-effective but can generate substantial monthly bills for high-volume contact centres.
Amazon Connect Usage Charges
Amazon Connect charges per minute of active call time. Inbound calls cost approximately $0.018/minute. Outbound calls cost approximately $0.018/minute plus carrier-specific per-minute telephony charges. These rates apply to the time the call is connected to an agent or IVR flow — queue wait time is not charged. On an average inbound call of 6 minutes, the Amazon Connect usage charge is approximately $0.108 per call.
Telephony Minutes (PSTN Charges)
On top of Amazon Connect usage, you pay for the actual telephony minutes — the carrier cost of connecting the call over the public switched telephone network. Inbound DID (Direct Inward Dialing) numbers cost approximately $0.006/minute for US numbers. Outbound calls cost approximately $0.0022/minute for US domestic. International rates vary significantly by country. Toll-free inbound numbers are more expensive: approximately $0.0120/minute for US toll-free.
Real-Time Transcription (Contact Lens)
Amazon Connect Contact Lens provides the real-time transcription and analytics that power Voice’s AI features. Charges are per minute of analysed audio: approximately $0.015/minute for real-time transcription with analytics. On a 6-minute call, that’s $0.09 — nearly as much as the base Connect usage charge. Post-call analytics (sentiment, key phrases, compliance detection) adds approximately $0.01/minute.
⚠️ The Consumption Surprise
Enterprises consistently underestimate Amazon Connect costs because they budget based on Salesforce’s $75/agent headline and treat the consumption component as marginal. For a 200-agent centre handling 50 calls/day at 6 minutes average, the monthly Amazon Connect bill (usage + PSTN + transcription) is approximately $35,000–$45,000/month — more than the combined Salesforce Voice PSL cost. Budget for both layers from the start.
5. Cost Layer 3: Telephony and Carrier Charges
Whether you use Amazon Connect or Partner Telephony, underlying carrier charges apply. These include DID number provisioning (typically $1–$3/number/month), toll-free number provisioning ($2–$5/number/month), per-minute PSTN charges (as detailed above), and international calling at carrier-specific rates.
For Partner Telephony deployments (Genesys, NICE CXone, Five9), your existing carrier contract and CCaaS subscription continue unchanged. The Salesforce Voice PSL adds the integration, transcription, and analytics layer on top. Your telephony costs remain with your existing provider, and the total cost is your existing CCaaS bill plus $75/agent/month to Salesforce. This is often the more predictable cost model because you already understand your telephony spend.
For Amazon Connect deployments, telephony costs flow through AWS billing. Enterprises migrating from on-premise PBX or traditional CCaaS to Amazon Connect should model their expected call volumes carefully. Amazon Connect’s per-minute pricing can be cheaper than flat-rate CCaaS for low-volume centres (under 30 calls/agent/day) but more expensive for high-volume operations (50+ calls/agent/day). The break-even point depends on your specific mix of inbound, outbound, domestic, and international traffic.
6. Cost Layer 4: AI Transcription and Analytics
Voice’s AI capabilities — real-time transcription, sentiment analysis, keyword detection, agent coaching recommendations, and next-best-action suggestions — are among its most compelling features and also its most overlooked cost drivers.
Einstein transcription within the Salesforce Voice PSL provides basic real-time call transcription. However, the deeper analytics features are powered by Amazon Connect Contact Lens, which carries separate consumption charges (covered in Section 4). The distinction matters: the Salesforce $75/agent PSL includes the UI for displaying transcripts and analytics, but the underlying AI processing costs come from AWS.
For enterprises planning to use Agentforce licensing guide for Service — Salesforce’s AI agent layer for automated customer service — Voice integrations create an additional consumption layer. Agentforce actions triggered by voice interactions (automated case creation, knowledge article retrieval, escalation routing) consume Flex Credits at $0.10/credit. A single voice interaction that triggers 3–5 Agentforce actions adds $0.30–$0.50 per call in AI consumption on top of all other costs.
Model the full AI cost stack before committing: Amazon Connect Contact Lens transcription + Salesforce Voice PSL + Agentforce Credits (if applicable). For a 6-minute inbound call with real-time transcription, post-call analytics, and two Agentforce actions, the AI/analytics cost alone is approximately $0.35–$0.50 per call. At 50 calls/agent/day across 200 agents, that’s $70,000–$100,000/month in AI-related charges. See our AI & Data Cloud licensing guide for Flex Credit negotiation strategies.
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7. Total Cost Model: 200-Agent Contact Centre
The following model illustrates the realistic all-in cost of Service Cloud Voice with Amazon Connect for a 200-agent enterprise contact centre handling inbound support calls.