Side by side

O2 Business SIP Trunking vs Sangoma Carrier Voice

Both stand on sip trunking providers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

O2 Business SIP Trunking

Paid Web

O2 Business SIP Trunking is for organisations keeping a PBX while moving to SIP connectivity. Listed pricing includes £4.50 a month for a standard channel, with underlying SIP access excluded.

Visit O2 Business SIP Trunking

Sangoma Carrier Voice covers wholesale communications, billing, and emergency calling through its portal and APIs. Buyers should contact sales for pricing and assess the usage-based service mix against their needs.

Visit Sangoma Carrier Voice

The facts

	O2 Business SIP Trunking	Sangoma Carrier Voice
Free plan	No	Not published
Open source	Not published	Not published
Runs on	Web	Android, API, iPhone, Web
Lowest paid plan	SIPT Back Up Channel: £1 a month	Free or on request
Plans published	5	1
Maker	Not published	Not published
Website	o2.co.uk	carrierservices.sangoma.com
On sip trunking providers	#24 of 30	#16 of 30

O2 Business SIP Trunking: what it does well

Supports number porting from other licensed operators
Optional portal provides reports and CSV call logs
Dual-trunk active/standby or active/active configurations
Phone support is available 24 hours a day

What to know first

No free plan or free trial
Approved Session Border Controllers are required
Standard channel price excludes underlying SIP access
Channel plans have a 24-month term

Sangoma Carrier Voice: what it does well

Voice APIs support IVR and call recording
BackOffice supports number ordering and real-time porting
Hosted billing includes an integrated tax module
E911 supports dynamic location routing
SIP trunking has no large minimum spends or long-term contracts

What to know first

Pricing requires contacting sales
Services are usage-based and à la carte

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