The Voice

Hospitality voice that keeps hotel calls moving.

hSIP is GrayMatter Networks’ hospitality-focused SIP trunking service. It connects your hotel phone system to the outside world and gives BrainBox the voice path it needs for inbound and outbound calls — with hotel-ready fallback features that help protect the guest experience when things get busy or something goes wrong.

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Why hotels need it

Most hotels do not think about SIP until calls fail.

That failure might look like:

Guests hearing a busy signal
Calls failing during an internet outage
Front desk losing overflow calls
Guest texts to the main number going nowhere
Support confusion between the carrier and the PBX vendor

hSIP is designed to reduce those failure points and give hotels a cleaner, more supported voice layer.

What hSIP helps you do

Built around what hotels need when calls do not go perfectly

Generic SIP connects calls. hSIP gives your property the core voice connection plus practical hospitality features like fallback voicemail, call forwarding, hosted IVR and SMS-to-email — all designed to keep guests acknowledged and staff informed.

Connect your PBX to the outside worldInbound and outbound calls run through a modern SIP connection from a fully licensed carrier.

Protect against busy signalsWhen call capacity is full, callers can be routed to hosted voicemail or hosted IVR instead of hearing a dead busy tone.

Keep calls moving during outagesIf the internet or phone system is down, calls can be forwarded to a designated mobile number.

Capture guest text messagesSMS messages to the hotel’s main number can be delivered by email to the right person or team.

Create a better fallback experienceHosted IVR can preserve a professional caller experience even when the main system is unavailable.

Simplify supportWhen we manage the PBX and the voice layer together, troubleshooting becomes cleaner. No more finger pointing with voice quality issues.

Included as standard

Your voice services delivered securely over the internet

hSIP leverages geographically redundant infrastructure to securely route inbound and outbound calls to your property. GrayMatter Networks is a fully licensed carrier providing voice, text messaging, local and toll-free telephone numbers and next-generation 911 solutions.

	Unlimited calling in the lower 48
	Includes up to 100 local telephone numbers
	Free number porting
	Least cost routing
	Bucket routing
	Dispatchable locations for emergency calls
	Multi-media notifications for emergency calls
	Hosted voicemail included at no charge
	Failover options
	24/7 support
	Dramatic cost cuts