Spectrummax provides WiFi Calling and Messaging services for Wireless Service Providers. Subscribers experience increased network access domestically and overseas, as well as use of rich messaging services. Voice calls, legacy SMS/MMS and rich messaging can be deployed on Cellular or WiFi using the subscribers mobile number and contact book. Spectrummax requires no IMS core and no RCS services, allowing the carrier to proceed without further network investment. It is practical, low cost and an alternative to small cell deployments. The mobile client (Android & iOS) provides the carrier with a privately-branded solution that is highly superior to available OTT applications. Voice/SMS/MMS/OTT Features all in one SAAS solution. MNO/MNE/MVNO Operators/Carriers/Cellular Networks/Enterprise

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Contact: info@SpectrumMax.com

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Summary• Introductions
• Solution Description
• Solution Architecture
• Mobile Carrier Interconnectivity
• SpectrumMax Wi-Fi Calling Benefits
• Q & A
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Contact: info@SpectrumMax.com

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• Founded in 2010
• Privately-held
• Headquartered in San Antonio, Texas
• R&D over past 5 years with multiple development
partners
• Executive Team has over 75 years combined in the
Mobile Industry
• Committed to open standards: SS7, SIP, IMS, RCS
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Contact: info@SpectrumMax.com

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Solution Descrption
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SpectrumMax enables a Mobile Carrier to offer to its
subscribers:
• Calling, SMS/MMS and Rich Messaging services
• over Cellular 3G/4G and Wi-Fi networks
• in an integrated manner
• using their existing smartphone, mobile number
and address book
Contact: info@SpectrumMax.com

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Solution Description (continued)
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Subscribers place/answer calls, send/receive SMS and
send/receive MMS just as in traditional mobile services.
Subscribers also interact with Rich Messaging capabilities:
Mobile client is Carrier-branded; pre-loaded/downloaded;
Android & iOS
• P2P Chat
• Typing Indicator
• Presence with last seen
• Delivery Notification
• Read Receipts
• File Sharing
• Location Sharing
• Emojis
• Voice Notes (walkie-talkie)
• Multiple Attachments
Contact: info@SpectrumMax.com

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Solution Description (continued)
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SpectrumMax is implemented with a Mobile Client and Cloud Services
that interwork with the Mobile Carrier network and the Internet
Contact: info@SpectrumMax.com

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SIP/IP
Contact: info@SpectrumMax.com

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Mobile Carrier Interconnectivity
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SpectrumMax Cloud Services interact with the Mobile
Network as a Wi-Fi VLR using standard MAP (GSM/ANSI-
41) roaming protocols over SS7.
What is NOT required:
• Changes to existing Mobile Network
• OSS Integration
• IMS Core
• RCS Server
• CAPEX
• Mobile device OEM development
• SIP trunking to MSC/HLR for voice transport
• SS7/SIGTRAN connection to MSC/HLR for
roaming and SMS transport
• Point code assignments for VLR/SMSC
• IP connectivity and credentials for MMSC
• IP connectivity with IPSEC VPN
Contact: info@SpectrumMax.com

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Preferred Network Selection
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Preferred Network Selection is configurable to
be specified by the Mobile Carrier with or without
subscriber override:
• Cellular 3G/4G First
• Wi-Fi First
• Best connection First
Default : Wi-Fi First if available; Cellular 3G/4G First if not
SpectrumMax Mobile Client can continuously measure the
integrity of the Cellular and Wi-Fi signals to select a Best
Connection
Contact: info@SpectrumMax.com

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SpectrumMax Wi-Fi Calling Benefits
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• Improves coverage within carrier’s network, where current coverage
is weak or non-existent; e.g. in-building, where most mobile usage
occurs
• Expands coverage outside of carrier’s network, both domestic and
international, while maintaining use of existing mobile number
• Reduces carrier’s need for femtocell and small cell deployments
• Reduces carrier’s cost on unlimited calling/SMS/MMS plans
without reducing revenue
• Reduces roaming fees to carrier & subscriber where applicable
• Reduces traffic demand on existing spectrum
Contact: info@SpectrumMax.com

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SpectrumMax Wi-Fi Calling Benefits
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• Consistent with use of Wi-Fi being encouraged by mobile data
offload and premium Carrier Wi-Fi expansion/aggregation
• Preserve or Win Back subscribers migrating from SMS/MMS to
OTT Messaging:
• Microsoft Skype, Google Hangouts, Apple Facetime, Facebook Messaging,
Whatsapp, Viber, WeChat, etc.
o all provide rich messaging over Cellular & Wi-Fi but w/o mobile
number identity
o OTT Messaging disintermediates the mobile carrier, generating
no incremental revenue, yet increasing data traffic demand
• A platform to generate incremental revenue (stickers, games,
other add-on services)
Contact: info@SpectrumMax.com

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Contact Us
info@SpectrumMax.com
Contact: info@SpectrumMax.com

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Overview
PSTN
Contact: info@SpectrumMax.com