I am attempting to put together a Vodafone, Grandstream HT801, VOIP Connection Guide since there is a great deal of conflicting information here and in the Vodafone forum and all UK land lines are going digital in 2025, mine already has, so the need for a guide seems pressing.
I have to thank “clayface” for sharing his obvious wisdom with us mortals and “Luciftian” for reporting the test results, I have mercilessly stolen and combined this information which worked immediately for me and without the benefit of a “static IP” which I had only requested minutes before and even if implemented my router was not re-booted so would not have picked up.
I apologise in advance for the formatting of this guide, I have masses of software notes and all formatted this way, “NOTES AND HEADINGS IN UPPER CASE” and “Inputs in normal text”.
Ear defenders are optional and feedback welcome.
Vodafone, Grandstream HT801, VOIP Connection Guide
REVISED SETTINGS 26/08/23
ROUTER SETTINGS
PORTS TO FORWARD
Service External Internal
Type Port IP Port Protocol
VOIP 5065 12.235.67.89 5065 UDP
VOIP 10000 12.235.67.89 10000 UDP
ALG SETTINGS
Enable "SIP ALG"
Enable "RTSP ALG" (for good measure)
GRANDSTREAM HT801 “BASIC Settings”
Time Zone: GMT (London, Great Britain)
Self-Defined Time Zone: MTZ+6MDT+5,M3.2.0,M11.1.0
GRANDSTREAM HT801 “FXS PORT”
Primary SIP server: resvoip.vodafone.co.uk
Outbound proxy: ###.##.bbvoice.vodafone.co.uk
NAT Traversal: STUN
SIP user ID: voi#########
Authenticate ID: voi#########
Authenticate password: #################
DNS mode: SRV
Register expiration: 60 minutes
Register before expiration: 15 seconds
Enable SIP
Options/Noitify
Keep-alive: OPTIONS
Local SIP port: 5065
Local RTP port: 10000
Remove OBP from route header: Yes
SIP User-Agent: Vox 3.0
Enable 100rel: Yes
Add Auth header on initial
REGISTER: Yes
Preferred vocoder: Choice 1: PCMA
Preferred vocoder: Choice 1: G729
FOR SETTINGS NOT MENTIONED, LEAVE THEM AS DEFAULT
THESE MAY OR MAY NOT HELP BUT SEEM REASONABLE - ADITIONAL SETTINGS
RECOMMENDED BY https://help.voipify.net/knowledge-base/article/grandstream-ht801
Dial Plan: { 155 | 116xxx | 116111 | 116123 | 118xxx | 1471 | 157[1-2] | 08001111 | 0845464x |
0[1235789]xxxxxxxxx | 00xxx. | x+ | \+x+ | *x+ | *xx*x+ }
SLIC Setting: UK
Caller ID Scheme: SIN 227 - BT
Allow Incoming SIP Messages
from SIP Proxy Only: Yes
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