Thanks for your last. Thought i was on a winner swapped cables as the ebay one had a RJ45 like plug instead of ten way block, phone was recognised phone book was read, Buuuuut when dialling out or receiving all i got was a burp burp noise on speaker! all internal plugs are wired the same but i believe the peiker circuit board is different. Back to looking for same part as you suggest!

__________________
2004 W211 320cdi