{"id":128,"date":"2020-09-01T11:58:10","date_gmt":"2020-09-01T11:58:10","guid":{"rendered":"http:\/\/knowledge.webafrica.co.za\/?post_type=ht_kb&#038;p=128"},"modified":"2026-04-21T12:11:07","modified_gmt":"2026-04-21T12:11:07","slug":"voip-troubleshooting-guide","status":"publish","type":"ht_kb","link":"https:\/\/knowledge.webafrica.co.za\/index.php\/knowledge-base\/voip-troubleshooting-guide\/","title":{"rendered":"VoIP Not Working? Quick Fix Guide"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Common Issues<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Can\u2019t make or receive calls<\/li>\n\n\n\n<li>No sound or one-way audio<\/li>\n\n\n\n<li>Choppy, lagging, or dropped calls<\/li>\n\n\n\n<li>Noise or static<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Start Here<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Check Your Internet<\/h3>\n\n\n\n<p>VoIP needs a stable connection.<br>If your internet is down or slow, fix that first.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. Restart Your Setup<\/h3>\n\n\n\n<p>Switch everything off, then back on in this order:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Router<\/li>\n\n\n\n<li>VoIP device<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. Check Connections<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cables plugged in properly<\/li>\n\n\n\n<li>No damage<\/li>\n\n\n\n<li>Handset powered<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. Using an App (Zoiper \/ GS Wave)?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Must be connected to WiFi or mobile data<\/li>\n\n\n\n<li>Status should show <strong>Ready \/ Green<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. Check Registration<\/h3>\n\n\n\n<p>Not registered = no service<br>Check your VoIP details in Client Zone<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Quick Fixes<\/h2>\n\n\n\n<p><strong>No dial tone<\/strong><br>\u2192 Restart router and VoIP device<\/p>\n\n\n\n<p><strong>You can hear them, they can\u2019t hear you<\/strong><br>\u2192 Try mobile data<br>\u2192 Check router\/firewall settings<\/p>\n\n\n\n<p><strong>Calls breaking up<\/strong><br>\u2192 Too many devices using internet<br>\u2192 Reduce usage during calls<\/p>\n\n\n\n<p><strong>Bad quality on one number only<\/strong><br>\u2192 Likely routing issue<br>\u2192 Report number + time of call<\/p>\n\n\n\n<p><strong>Echo<\/strong><br>\u2192 Lower volume<br>\u2192 Move device away from electronics<\/p>\n\n\n\n<p><strong>Static or buzzing<\/strong><br>\u2192 Try another handset<br>\u2192 Check cabling<\/p>\n\n\n\n<p><strong>Call takes long to connect<\/strong><br>\u2192 Normal with VoIP sometimes<\/p>\n\n\n\n<p><strong>\u201cNumber does not exist\u201d<\/strong><br>\u2192 Check full number with area code<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Bandwidth Guide<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>1 call: ~60 Kbps<\/li>\n\n\n\n<li>3-way call: ~90 Kbps<\/li>\n<\/ul>\n\n\n\n<p>If your line is busy, calls will suffer.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Still Not Working?<\/h2>\n\n\n\n<p>Have this ready before contacting support:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Time of issue<\/li>\n\n\n\n<li>Number called<\/li>\n\n\n\n<li>What happened<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Quick FAQs<\/h2>\n\n\n\n<p><strong>Softphone?<\/strong><br>An app that lets you make calls over the internet<\/p>\n\n\n\n<p><strong>Mobile use?<\/strong><br>Yes, if your network allows SIP<\/p>\n\n\n\n<p><strong>Billing?<\/strong><br>Prepaid, per-second<\/p>\n\n\n\n<p><strong>Porting your number?<\/strong><br>Yes, with required documents<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Tech Info<\/h2>\n\n\n\n<p>Codecs: G729, G711<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Common Issues Start Here 1. Check Your Internet VoIP needs a stable connection.If your internet is down or slow, fix that first. 2. Restart Your Setup Switch everything off, then back on in this order: 3. Check Connections 4. Using an App (Zoiper \/ GS Wave)? 5. Check Registration Not&#8230;<\/p>\n","protected":false},"author":1,"template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[146],"ht-kb-tag":[151,152,148,157,158,154,149,150,153,155,159,147,156],"class_list":["post-128","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-voip","ht_kb_tag-call-cell-numbers","ht_kb_tag-choppy","ht_kb_tag-ghost-calls","ht_kb_tag-grandstream-wave","ht_kb_tag-gs-wave","ht_kb_tag-hear-me","ht_kb_tag-make-calls","ht_kb_tag-receive-calls","ht_kb_tag-stuttering","ht_kb_tag-voip-app","ht_kb_tag-voip-info","ht_kb_tag-voip-phone","ht_kb_tag-zoiper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VoIP Not Working? 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