General SIP trunk settings and PBX compatibility

This article provides information about PBX compatibility with SIP trunking solutions.

The information contained in this article is extracted from the Help Portal on the VoiceHost website. Further information concerning SIP trunks, hosted PBXs, routers, VoIP handsets and softphones may be found at, https://www.voicehost.co.uk/help?page=1.

If a PBX is SIP-compatible, then it will generally be immediately compatible with SIP trunking solutions provided by Cloud Direct. The most important features for testing the compatibility of a PBX are these:

  • Ability to set registration time at 120 seconds (halves to 60s) where registration is required for inbound calls.
  • Ability to enter a username and password for authentication on outgoing calls.

If your PBX is not SIP compatible (i.e. a legacy PBX), then it may still be compatible with a SIP to PSTN Gateway connected to the PBX, such as those made by Vega or Sangoma. Please call Cloud Direct for confirmation if you plan to connect one to the service.

 

General SIP trunk settings

The following table lists general SIP trunk setting options.

SIP trunk setting

Available options

Protocols and encapsulation

SIP 2.0 (RFC3261 and associated RFCs) for signalling

RTP for media encapsulation

UDP transport (default)

TCP transport (optional)

TLS | SRTP

VoiceHost SIP Trunk Gateways & Firewall Configuration

st.voicehost.co.uk / st.sipconvergence.co.uk

Firewall configuration:

37.157.52.128/25 and 37.157.54.192/28

(37.157.52.130 - 37.157.52.254 and 37.157.54.194 - 37.157.54.206)

Ports

5060 UDP (SIP signaling)

5061 TCP TLS (SECURE SIP signaling)
10000-65335 UDP (RTP and SRTP stream)

TCP and UDP port 389 (LDAP) and 636 (LDAPS)

Outbound Call Authentication

Username/password authentication (default) OR IP authentication

DTMF (Tones)

RFC2833 (out-of-band)

Supported codecs

G.711 a-Law, G.711 u-Law, G.722 (HD), GSM 6.10 FR (Full Rate)

Incoming number formats

E.164: +countrycode then number less leading zero, e.g. +441603904090 (SIP trunk can be configured to strip the plus on the portal)

Outgoing number formats

UK format (e.g. 01603904090) or full E.164 format (e.g. +441603904090).

Voicemail to Email

The email servers send attachments as a *.wav
Email Server: relay01.tn19-f9.lon.gb.voicehost.co.uk (37.157.52.160)

 

SIP trunk / PBX compatibility

The following table lists PBX platform to SIP trunk interoperability (Compatible platforms & hardware).

Platform

Product

Compatibility

Asterisk based

IP Cortex

FreePBX v2

TrixBox

SARK

Asterisk

Confirmed

FreeSWITCH based

FreePBX v3

FreeSWITCH

Confirmed

Broadsoft based

All

Confirmed

Metaswitch based

All

Confirmed

PABX Manufacturers

Panasonic NCP500 and NS1000 (accredited)

Mitel 3300 (MCD) (accredited)

Mitel 5000

Samsung OfficeServ 7000 series (accredited)

Avaya IP Office 500

LG iPECS

NEC SL1100 and SV8100 (accredited in IP authentication mode)

Gigaset PRO T300/500

snomONE PBX

Cisco UC320 and IOS PBX

3CX Phone System

Grandstream PBX

iQ PBX

DrayTEK PBX

Confirmed

SBC Manufacturers

OpenSIPS

GENBAND

SONUS

Kamailio

OpenSER

ACME Packet

Metaswitch

Dialogic (IP authentication only)

Confirmed

Incompatible Platforms & Hardware

Microsoft Lync (currently under testing)

Microsoft Office365 (currently under testing)

NEC XN120

Cannot be used

 

Configuring SIP trunks

The Help Portal on the VoiceHost website also contains articles detailing how to configure SIP trunks with the following PBXs: