Updated: Jul 20, 2026
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| Certification Vendor: | Avaya |
| Exam Name: | Avaya IX™ Calling Design Exam |
| Exam Number: | 31860X |
| Exam Format: | Multiple choice, Scenario-based questions |
| Related Certifications: | Avaya IX™ Contact Center Avaya Solutions Architect Avaya Implementation Engineer |
| Available Languages: | English |
| Sample Questions: | Avaya 31860X Sample Questions |
| Exam Way: | Computer-based exam delivered via authorized Avaya testing platforms or Pearson VUE (availability may vary by region). |
| Pre Condition: | Recommended prior experience with Avaya communication solutions and IP telephony concepts. |
| Section | Objectives |
|---|---|
| Topic 1: Avaya IX Calling Architecture | - Solution design principles - Deployment models (on-premises / hybrid) - Core platform components |
| Topic 2: Endpoints and Devices | - IP deskphones and soft clients - Device provisioning and management |
| Topic 3: Integration and Interoperability | - Third-party SIP integration - PSTN connectivity |
| Topic 4: Call Control and Signaling | - SIP fundamentals in Avaya IX - Call routing and dialing plans |
| Topic 5: System Administration and Troubleshooting | - Common deployment issues - Monitoring tools and logs |
1. A customer wants to prevent additional calls from being established, and to preserve the quality active calls when the capacity limit on the WAN link is reached. The branch inter-office communication use rate is one trunk for every 20 users over the customer's star topology WAN. 600k of the WAN bandwidth is dedicated to voice.
Assuming G.729 (30k bandwidth per call) is used, which Call Admission Control (CAC) limit will meet the customer s requirement?
A) Set the CAC limit to 2 Mbps just for voice traffic at the headquarters main office WAN connection.
B) Set the CAC limit to 10 incoming calls and 10 outgoing inter-branch calls at each branch.
C) Set the CAC limit to 200 intra-branch calls globally in the WAN network.
D) Set the CAC limit to 20 inter-branch calls for each branch location.
2. A customer has 80 remote users, and you expect 25% of the users will be connected at any one time using
G.729. Assuming the following requirements:
* a G.729 codec requires 30 kbps
* a G711 codec requires 80 kbps
* 720p HD video codec requires 512 Kbps
How much bandwidth is needed for a public interface WAN link of the centralized SBCE for the deskphones used by remote workers?
A) 1600 Kbps
B) 600 Kbps
C) 6400 Kbps
D) 2400 Kbps
3. You are designing a branch location that needs:
* 15 H-323 Endpoints
* 20 SIP Endpoints
* 1 DS-1 for PSTN trunking
* 2 Analog Ports
* Basic Survivability for all Non-SIP endpoints in event of WAN failure What is the least costly solution that meets all of these requirements?
A) G450 Media Gateway with S8300
B) G430 Media Gateway
C) G450 Media Gateway
D) G430 Media Gateway with S8300
4. You are recommending the WAN link requirement per branch for a multi-location customer. The customer estimates the branch Inter-office communication use rate over the WAN to be one trunk per 20 branch users, and there are 460 users at each branch. You assume that after all header compressions have been applied, there is a 30% protocol overhead, and the G.729 codec being used provides 7.2 kbps.
How much bandwidth is needed for voice traffic on the WAN link for each branch?
A) 215.3 Kbps
B) 165.6 Kbps
C) 115.9 Kbps
D) 187.2 Kbps
5. You are designing media gateways at remote locations for a customer. They have requested the following:
* Analog telephone calls go through the PSTN in case of power outage.
* Redundant power supply
* The same administrative and telephone functionality during WAN outage Which design meets these customer requests?
A) A design with G450 gateways with dual power supplies, and Standard Local Survivability A design with G430 gateways with dual power supplies, and Standard Local Survivability
B) A design with G450 gateways with dual power supplies, and S8300 Survivable-Remote
C) A design with G430 gateways with dual power supply, and S8300 Survivable-Remote
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: A |
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